Miscellanies-. 401 



ference of longitude between Greenwich and New York. Our limits 

 permit us to give only the results. The longitude of N. Y. City Hall, 

 resulting from the observations of three chronometers (sent by Mr. 

 D. in July last, in the steamship British Queen ; their rates being 

 duly ascertained at Greenwich, Brooklyn, and again at Greenwich,) 

 is 4h. 56ot. 3.35.9. W. As given by M, Daussy, in the Connaisance 

 des Temps, it is 4h. 6Qm. 0.72s. ; difference, 2.63s. As determined 

 by R. T. Paine, Esq., and published in the American Almanac, the 

 longitude of N. Y. City Hall is 4A. 56m. 4.5s. (previous determina- 

 tions being about .5s. less,) which differs only 1.15s. from the result 

 of these Chronometrical observations. 



69. Jay^s Catalogue of Shells, 3d edition.* — At page 399 of Vol. 

 36, we acknowledged the receipt of a copy of Dr. Jay's new catalogue, 

 intending to revert to it again. This edition is a great enlargement and 

 improvement on the two former ; it contains the names of 3872 spe- 

 cies arranged according to Lamarck's System, with a full reference to 

 the habitat and the original description. As the numbers on the left of 

 the names are constant and intended to remain so, this work becomes 

 a very convenient form of catalogue for all conchological collectors, 

 as by placing on the specimen the number of the catalogue they have 

 without further trouble a systematic arrangement of their own cabinets. 



There are ten quarto colored plates attached to the catalogue, with 

 descriptions of new and rare shells in the collection, which add much 

 to the value as well as beauty of the work. The shells figured and 

 described are, plate I, Bulimus cinctus, Turbo Rotelliformis, Ampul- 

 laria Brownii, and A. Storeria, Helix Planorbis, Paludina scalaris, Lym- 

 naea gracilis, Nucula Eightsii, Couthouy; Venerupis Peruviana, Fissu- 

 rella nigrita ? Sowb., Trichotropis costellatus, Couthouy ; Nucula 

 Portlandica, Hitchcock; Helix denticulata. Plate II, Cerithium mar- 

 moratura, Quoy et Gaimard; Ranella pulchra, Gray. Plate III, Am- 

 pullaria scalaris, D'Orbigny ; A. ochracea, Helix speciosa. Plate IV, 

 Natica iluctuata, Sowb. ; Neritina granosa, Sowb, ; Plate V, Unio 

 spinosus, Lea ; Plate VI, Bulimus ustulatus, B. Aurora, Achatina bi- 

 color, Bulimus virgatus, B. porraceus. Pandora striata, Quoy et Gai- 

 mard. Plate VII, Bulimus tristis, Conus rhododendron, Couthouy ; 

 Cyclostoma Cumingii? Sowb. ; Bulimus dubiosus, Cyclostoma multi- 

 carinata, Cyclostoma maculosa, Melania laeta, Cyclostoma multiline- 

 ata. Plates VIII and IX, Dolium melanostomum. Plate X, Voluta 



* A Catalogue of the shells arranged according to the Lamarckian System, con- 

 tained in the collection of John Clarkson Jay, M. D. Illustrated by ten plates. 

 3d edition. New York. Wiley & Putnam, 161 Broadway, and 35 Paternoster 

 Row, London. April, 1839. 4to. 



Vol. XXXVII, No. 2.— July-October, 1839. 51 



