OF CONCHOLOGY. 85 



II. FOREIGN. 



British. 



Annals and Magazine of Natural History. Vol. xiii., 3d series, No. 

 74, February, 18G4.* 



Characters of Coilostele, an iindescribed genus of Auricu- 

 laceaf?) and of species of Hdix, Fupa and Ancylus from 

 India^ West Africa and Ceylon: by w. h. benson. 



Coilostele scalaris. Pupa gutta. 



Helix palmar ia. " eurina. 



" contracta, Hutton, MS. " ofella. 



Pupa Thihetica. Ancylus Ceylanicns. 



Mr. Benson suspects that M. Bourguignat's Ancylus Baconi, 

 represented to be from Bengal, is really Australian. A. verrucai 

 Bens., Ann. and Mag., January, 18(35, is believed to be the 

 sole Indian species. 



Notes on some Molluscous Animals from the seas of China 

 and Japan : by Arthur adams. 



BesG. of Photinul% qusesita.^ A. Ad., and of the animals of 

 Serpulus Adamsi, Morch, Pilidlum commoduni, Midd., Eburna 

 Japonici, Reeve, G.incellaria Spengleriana, Desh., Turcica con- 

 strict!, Gould, and Olyphis quadriradiata, Sowb. 



On the Classification of the Gasteropodous Mollusca : by m. 



GOURIET. 



" A division of the Gasteropoda founded on the generative 

 organs presents this radical defect, that many species reputed 

 to be hermaphrodite are constantly being found to be unisexu- 

 al, and further that Mollusca evidently nearly allied, such as 

 the Helices and Cychstomata, are necessarily separated on the 

 consideration of their sexual organs. 



Therefore most authors have justly selected the respiratory 

 apparatus as the basis of classification, since the position of this 

 organ determines the position of the heart and generally that 

 of the anus. In the classifications generally followed, such as 

 that of Cuvier, however, orders are found to be established upon 

 various characters of unequal importance although generally 

 derived from the respiratory apparatus. Thus the Nudibranchs 

 are generally characterized by their uncovered branchife, al- 

 though with a restriction for the separation of the Infero- 

 branchs, which are really also Nudibranchs. Elsewhere only 

 the pectinated form of the organs is considered, as in the Pec- 

 tinibranchs, although in other divisions, such as the Tecti- 



*No. 73, January, 1865, has not been received by us. 



