Mr. Stearns in the chair.
The Academy met for the first time in its new rooms on the corner of Montgomery and Sacramento streets; twelve members were present.
Donations to the cabinet: Two boxes of shells, from the Smithsonian Institution.
Donations to the Library: Bulletins de l’Académie Royale des Sciences de Belgique (2) XVIII, XIX, 1864-5. Annuaire de l’Académie Royale de Belgique, 1865; 31me Année. Sitzungsberichte der königl. bayer. Akademie der Wissenschaften zu München, 1864, II, 3, 4; 1865, I, 1-4; II, 1-4. Annalen der königlichen Sternwarte bei München, Band XIV. Entstehung und Begriff der naturhistorischen Art, von Dr. Carl Nägeli, 2te auflage; München, 1865, 8vo. pamphlet. Induction and Deduction, von Justus von Liebig; München, 1865, 8vo. pamphlet. Vorträge über die Florenreiche, von Dr. C. F. Ph. von Martius; München, 1865, 8vo pamphlet. Elfter Bericht der Oberhessischen Gesellschaft für Natur-und Heilkunde; Giessen, 1865. Verslagen en Mededeelingen der koninklijke Akademie van Wetenschappen; Afdeeling Naturkunde, 17de Deel; Amsterdam, 1865: same; Afdeeling Letterkunde, 8ste Deel, 1865: same; Iarboek, 1863, 1864. Musee Vrolik, Catalogue de la Collection d’ Anatomie, etc. de M. M. Ger. et W. Vrolik; 1 vol. 8vo. Amsterdam, 1865. Meteorologische Waarnemingen, 1864; 1 vol. long 4to Utrecht, 1865. Kongliga Svenska Vetenskaps-Akademiens Handlingar; Ny Följd, 5te Bandet, 1sta Häftet, 1863. Ofversigt of Kongl. Vetenskaps-Akademiens Förhandlingar, 21sta Argangen; 1 vol. 8vo. Stockholm, 1865. Meteorologiska Jaktagelser i Sverige, utgifna af Kongl. Svenska Vetenskaps-Akademiens: 5te Bandet, 1863. Meteorologiske Jagttagelser paa Christiania Observatorium, 1864; Christiania, 1865. Meteorologische Beobachtungen, aufgezeichnet auf Christiania Observatorium; 1, Band, Letzte Lieferung, 1837-63, Christiania, 1865. Oversigt af Norges Echinodermer ved Dr. Michel Sars; 1 vol. 8vo Christiania, 1861. Zologisk-Botaniske Observationer fra Gudbrandsdalen og Dovre, af R. Collett; 8vo. pamphlet, Christiania, 1865. Beretning om en botanisk Reise i Valders, foretagen i Sommeren 1864, af H. C. Printz; 8vo. pamphlet, Christiana, 1865. Oversigt af Christiania Omegns ornithologiske Fauna, af R. Collett; 8vo. pamphlet, Christiania, 1864. Norges Ferskvandskrebsdyr: Förste afsnit, Branchiopoda, 1, Cladocera ctenopoda, af G. O. Sars; 4to pamphlet, Christiania, 1865. Hestiæ Planetæ Minoris XLVI, Elementa Nova, deduxit F. M. Karlinski, Cracoviæ, 1865. Jahrbücher des Vereins für Naturkunde im Herzogthum Nassau, 17tes and 18tes Heft, 1 vol. 8vo. Wiesbaden, 1862-3. Jahrbuch der k. k. geologischen Gesellschaft, 1865, Band XV 1, 2, 3. Der Zoologische Garten; VI Jahrgang, Nos. 1-12, 8vo. Frankfort a. m., 1865. Flora, oder allgemeine botanische Zeitung; Neue Reihe, XXIII Jahrgang, 8vo. Regensburg, 1865. Sitzungs-Berichte der naturw. Gesellschaft Isis zu Dresden; Jahrgang, 1864, 8vo. Dresden, 1865. Verhandlungen des naturhistorischen Vereins der preuss. Rheinlande und Westphalens; 21ter Jahrgang, 1 volume in two parts, 8vo. Bonn, 1864. Verhandlungen der k. k. zool-bot. Gesellschaft in Wien; XIV Band, 8vo. Wien, 1864. Mémoires de l’Académie Impériale des Sciences de St. Petersbourg; Tome V, 1, VII 1-7 (complete), VIII, 1-16 (complete), 4to, St. Petersburg, 1864-5. Bulletin de l’Académie Impériale des Sciences de St. Petersbourg; Tome VII, Feuilles 12-36, VIII 1-36. Royal Horticultural Society’s Proceedings; vol. IV, No. 10, vol. V, Nos. 4-9, 8vo. London, 1865. Journal of the Royal Horticultural Society; new series, vol. 1, part 1., 8vo. London, 1866. Defense des Colonies, III, par Joachim Barrande; 8vo. Prague, 1865. Fragmenta Phytographiæ Australiæ, F. Müller; vol. IV. 8vo, Melbourne, 1863-4. Vegetation of Chatham Islands, F. Müller, 8vo. Melbourne, 1864. Analytical drawings of Australian Mosses, edited by F. Müller, 1 Fascicle, 8vo. Melbourne, 1864. Plants indigenous to the Colony of Victoria, Lithograms, by F. Müller, 4to, 1864-5. Review of American Birds in the Museum of the Smithsonian Institution, by S. F. Baird; Part 1, Middle and North America, 8vo. Washington. Illustrated Catalogue of the Museum of Comparative Zoology, No. II, North American Acalephæ, by A. Agassiz; 4to, Cambridge, 1865.
All of the above publications were presented by the authors or the Societies publishing the same; those published in Europe were forwarded and received through the medium of the Smithsonian Institution.
Mr. Dall presented the following paper:
On a New Subfamily of Fluviatile Mollusca.
BY W. H. DALL, ACTING DIRECTOR SCI. CORPS, W. U. T. EX.
A paper was read by Dr. Isaac Lea, before the Philadelphia Academy of Natural Sciences, April 1st, 1856, in which he described a new genus (Pompholyx) and species (P. effusa, Lea) of fluviatile mollusca, from California. He placed it in the Family LYMNÆANA without remark.
In the “Genera of Recent mollusca,” by H. & A. Adams, it is referred to (Vol. II, p. 645, Pl. CXXXVIII, fig. 11) as the only species of the genus and is placed in the Family LIMNÆIDÆ.