vi 
Preirrer, Dr. L. page 
Descriptions of New Species of Shells belonging to the 
Genera Helix and Bulimus, collected by H. Cuming, Esq. in 
the Philippine Islands : 84 
Descriptions of New Species of Shells, collected by "Hugh 
Cuming, Esq. in the Philippine Islands - 150 
Descriptions of some New Species of Helicide, collected 
by Mr. Bridges in the northern parts of Chile . « 186 
PoinTER, H., Esq. 
Various Specimens presented by, exhibited > 197 
Reciuz, M. C. A. 
Descriptions of various Species of Navicella, collected by 
Hugh Cuming, Esq. in the Philippine Islands . . - 54’ 
Descriptions of New Species of Nerites, collected by H. 
Cuming, Esq. in the Philippine Islands : . 168 
Reeve, Lovett, Esq. 
Monograph of Crassatella, a genus of Fe eet Mol- 
lusks . 42 
Descriptions of New Species of Shells, prineipally from ‘the 
Collection of Hugh Cuming, Esq. . . 49 
Descriptions of four New Species of Achatina 55 
Monograph of the Genus Tornatella spies 58 
Descriptions of two New Species of Oniscia, a Genus of 
Pectinibranchiate Mollusks 91 
Descriptions of New Species of Delphinula, a Genus of 
Pectinibranchiate Mollusks of the Family Turbinacea 102 
On a New Species of the Genus Murex . 104 
On the Genus Phorus, a group of agelutinating “Mollusks 
of the Family Zurbinacea . 160 
Descriptions of New Species of Shells belonging to the 
Genera Trochus and Turbo . . . - 184 
Descriptions of New Aaa of Shells s figured in the ‘Con- 
chologia Systematica’ 197 
Ross, H. J., Esq. 
Letters frome oi aif oie | she spe eta oo ses coe pene 
Ross, H.J., Esq., and E. D. Dickson, Esq. 
Numerous Specimens presented by, exhibited 197 
Riprevy, Dr. E. 
On two New Species of Chizerhis from Abyssinia . 8 
Suaw, ALEXANDER N., Esq. 
Lettersifrom:t) Veneers, 1a A ee esa) 
SoweErsy, G. B., Esq. 
Descriptions of New Species of Shells belonging to the 
Genus Cyclostoma, collected by F Fi, ke a in the Phi- 
lippine Islands His : 
80 
