III. A List of Papers which have been published in the year 1893 by the Beiträge zur Kenntniss des Baues und der Entwickelung Experimentelle Untersuchungen über den Einfluss der Vergleichende Untersuchungen über Streptokokken. Beiträge zur pathol. Anatomie u. allg. Pathologie,' 12. B., 1893. Studies on the Protochordata. I. On the origin of the branchial stigmata, præoral lobe, endostyle, atrial cavities, etc., in Ciona intest., etc. 'Quart. Journ. Micr. Sc.,' vol. 34, 1893. and Studies on the Protochordata. II. Development of the natürlichen Immunität. 'Beitr. zur pathol. Anatomie u. allg. Pathologie,' 12. B., 1893. Sulla connessione dello stomaco ed il circolo delle lacune sanguigne aborali nelle Ophiothrichidae.' 'Zool. Anzeiger,' 1893. Specie di Echinodermi poco conosciuti e nuovi viventi nel Golfo di Napoli.' Atti R. Accad. Sc. Fis, e Mat. Napoli,' vol. 6, 1893. Bemerkungen über Infection, Immunität u. Heilung. Vergl. Entwick.-Geschichte von Pelagia noctiluca. "Zeitschr. f. wiss. Zoologie,' 55. B., 1893. Monografia delle Aplysiidæ del Golfo di Napoli. 'Soc. Ricerche sulle Pettida del Golfo di Napoli. Atti R. Sviluppo e Morfologia degli Oxyrhynchi. Mitth. Zool. Zur Verlagerung der Blastomeren des Echinideneiss. Entwickelungsmechanische Studien. VII. Exogastrula u. Anenteria. VIII. Ueber Variation der Mikromerenbildung. IX. Ueber die Vertretbarkeit von Ectoderm u. Entoderm. X. Ueber einige allg. entwickelungsmechanische Ergebnisse. Mitth. Zool. Station Neapel,' 11. B., 1893. Weitere Beiträge zur Physiologie des Ohrlabyrinthes. I. Mitth. Versuche an Fischen. 'Sitz.-Ber. Wiener Akad.', Abth. III., 101. B, 1893. II. Mitth. Versuche an Krebsen. Ibid., 102. B., 1893. Zur Lehre von den Structur u. Zuckungsverschiedenheiten der Muskelfasern. 1. Zuckungsnerven Von Schliessmuskeln der Lamellibranchiaten. Ibid., 101. B., 1893. Ueber die Herzthätigkeit bei einigen Evertebraten u. deren Ueber Lebensweise u. Entwickelungsgeschichte der Ostra- Echinoderm Spermatogenesis. Anat. Anzeiger,' 8. Jgg., Studien über Pigmentzellen. 1. Ueber die Anordnung des Cotylogaster Michaelis. Festschrift Leuckart., 1893. . On the perivisceral cavity of Ciona. Quart. Journ. Mier. Intorno alla struttura delle ova delle Oloturie. Zool. ed Anatom., Univers. Torino,' v. 8, 1893. Nat. Napoli,' vol. 7, 1893. Boll. Boll, Soc. Photographische Abbildungen von lebenden Seethieren. Revisione del genere Polydora e cenni su due specie che B., 1893. Studien zur Phylogenie der äusseren Genitalien bei Wir- Ueber Stoffbildung bei den Meeresalgen. Ibid. Zool.,' t. 1, 1893. Revue Suisse de Ueber den feineren Bau der Thymus u. deren Beziehungen Beiträge zur Kenntniss des Baues der Euchytraeiden. Ueber den sog. weissen Körper, sowie über die embryonale Ueber Caulerpa prolifera, ein Beitrag zur Erforsch. der Form und Richtkräfte in Pflanzen. Flora, oder allg. botan. Zeitung,' Heft 5, 1893. Ueber paradoxe Zuckung. 'Zeitschr. f. Biologie.,' 30. B., 1893. Physiolog. Untersuchungen an Eledone moschata. II. Die Ueber den Stoffumsatz in dem thätigen electrischen Organ The Zoology of the Sandwich Islands.-Fourth Report of the Committee, consisting of Professor A. NEWTON (Chairman), Dr. W. T. BLANFORD, Dr. S. J. HICKSON, Professor C. V. RILEY, Mr. (). SALVIN, Dr. P. L. SCLATER, Mr. E. A. SMITH, and Mr. D. SHARP (Secretary). THE Committee were reappointed to continue their report on the present state of our knowledge of the zoology of the Sandwich Islands and to take steps to investigate ascertained deficiencies in the fauna, with power to co-operate with the committee appointed for the purpose by the Royal Society, and to avail themselves of such assistance as may be offered by the Hawaiian Government. During the past year your Committee have been harmoniously cooperating with that appointed by the Royal Society, and Mr. Perkins's labours in the islands have been satisfactorily continued. Since your Committee last reported Mr. Perkins has been diligently exploring in succession Molokai, Lanai, and Maui, from the first two of which very considerable collections in almost all branches of the terrestrial fauna have already been received, while one is shortly expected from the third. By the last accounts he was about to proceed to Kauai. Although far from having completed the zoological exploration of the archipelago, the Committee have thought it best that Mr. Perkins should return home in the course of the autumn, and have instructed him accordingly. They hope to obtain his assistance, in conjunction with that of other competent zoologists, towards working out his extensive collections, the value of which it is difficult to over-estimate, since evidence of the growing scarcity of many, and of the extinction of not a few members of the endemic fauna becomes stronger the more the subject is investigated. In view of making arrangements necessary for this purpose your Committee request that they may be reappointed, with the same powers as before, but they do not ask on the present occasion for any grant of money. The Present State of our Knowledge of the Zoology and Botany of the West India Islands, and on taking Steps to Investigate ascertained Deficiencies in the Fauna and Flora.-Seventh Report of the Committee, consisting of Dr. P. L. SCLATER (Chairman), Mr. GEORGE MURRAY (Secretary), Mr. W. CARRUTHERS, Dr. A. C. L. G. GÜNTHER, Dr. D. SHARP, Mr. F. DUCANE GODMAN, and Professor A. NEWTON. THIS Committee was appointed in 1887, and it has been reappointed each year until the present time. The Committee have to report satisfactory progress in obtaining reports on the collections made by the Committee's collectors, and this task of working out the results has engaged their exclusive attention during the year. The following reports have been published (or are complete and ready for publication) since the last annual report : 1. Report on the parasitic Hymenoptera of St. Vincent by Messrs. Riley, Ashmead, and Howard (Linnean Society). The corresponding group from Grenada has been sent to these authors. 2. Report on the Hemiptera of St. Vincent by Dr. Uhler (Zoological Society). 3. Report on the Ants of St. Vincent by Professor Forel (Entomological Society). 4. Part III. dealing with the Diplopoda and Protoacheata of Mr. Pocock's report (Linnean Society), with a supplement on the Pedipalpi. 5. Report on the Trichopterygidæ and Corylophide by the Rev. M. Matthews (Annals and Magazine of Natural History). 6. Report on the Attide of St. Vincent by Mr. Peckham (Zoological Society). 7. Report on the Diptera of St. Vincent by Professors Williston and Aldrich (Linnean Society). 8. Report on the Hepatica of St. Vincent and Dominica by Richard Spruce (Linnean Society). 9. Report on the Freshwater Algæ (including those of the boiling lake of Dominica) by Mr. William West (Linnean Society). 10. Report on the Spiders of St. Vincent, Part II., by M. Simon (Zoological Society). The report on the Musci has been completed by Mr. Gepp, and will be presented to the Linnean Society. The Marine Algae have been named by Mr. George Murray, who does not consider the result worth separate publication, and the Lichenes (the only remaining group of plants) are in the hands of Professor Wainio for determination. The large collection of Coleoptera from St. Vincent and Grenada, numbering 27,980 specimens, has been arranged by Messrs. Sharp and Gahan, and its treatment will receive the Committee's immediate attention. The Committee recommend their reappointment, with the following members-Dr. Sclater (Chairman), Mr. George Murray (Secretary), Mr. Carruthers, Professor Newton, Mr. Godman, Dr. Günther, and Dr. Sharp. They also recommend that a grant of 2001. be placed at their disposal to enable them to continue their work and to adequately provide for the exploration of Margarita. Investigations made at the Laboratory of the Marine Biological Association at Plymouth.-Report of the Committee, consisting of Professor E. RAY LANKESTER (Chairman), Professor M. FOSTER, Professor S. H. VINES, and Mr. G. C. BOURNE (Secretary). On the Development of Alcyonium. By Dr. S. J. HICKSON, On the Later Stages in the Development of Decapod Crustacea. By EDGAR J. ALLEN. THE Committee were appointed for the purpose of enabling Dr. S. J. Hickson to investigate the development of Alcyonium at the Laboratory of the Marine Biological Association, Plymouth. The Committee have received the following report from Dr. Hickson, and a supplementary report from Mr. Edgar J. Allen, who occupied the table during June and July 1893 : On the Development of Alcyonium. By Dr. S. J. HICKSON, M.A. On my arrival at Plymouth early in the month of December last I experienced a great difficulty in obtaining a sufficient quantity of material, in consequence of the severe storms then raging. The few specimens of Alcyonium I obtained contained large quantities of ripe ova or sacs containing ripe spermatozoa. They spawned freely in the tanks of the aquarium, but I was not successful in fertilising the ova artificially, as the water of the tanks affected injuriously the spermatozoa. I succeeded, however, in obtaining a few young embryos by keeping the specimens in fresh sea-water in buckets. Soon after Christmas the sea became calmer and I obtained plenty of colonies, but they were nearly all spent and useless for my investigations. The results I have obtained confirm those of Kowalewsky. I can find no trace of any karyokinetic division of the first segmentation nucleus, although these figures can be easily demonstrated in the later stages. While I was waiting for sufficient material to study the embryology of Alcyonium, I devoted a considerable amount of time to a study of the minute anatomy and physiology of the genus. A full account of these investigations will appear in a paper now nearly ready for publication. Researches on the Later Stages in the Development of Decapod Crustacea. By EDGAR J. ALLEN, B.Sc. London. My attention during the months, June and July 1893, when I occupied the Association table, was devoted chiefly to the study of the nervous system. After repeated trials on a number of decapod embryos and larvæ, a satisfactory subject for research was found in the embryonic lobster, many of the nerve elements of which stain excellently in dilute solutions of methylene blue. My observations, after being continued and extended, were published in a preliminary paper read before the Royal Society in April 1894, whilst a fully illustrated account will shortly appear in the 'Quarterly Journal of Microscopical Science.' The following nerve-elements are amongst the most important of those which I was able to demonstrate during the time which I occupied the Association table : (1) Elements starting from a cell in one ganglion of the thorax and giving off a fibre, which, after sending numerous arborescent branches to |