54 AMERICAN J0UK3fAL 



Proceedings of the Zoological Society of London. Part 2. London. 



18b8. 



Description of a new species of Helix from South Australia. 

 By Geokge French Angas. 



Helix Silvein, South America. 



Notes on some of the species of Land Blollusca inhabiting 

 Mauritius and the Seychelles. By Geoffrey Nevill. 



Description of some new species of Shells collected by Geof- 

 frey Nevill^ Esq.., at Mauritius, the Isle of Bourbon, and 

 the Seychelles. By Henry Adams. 



Conus Bourbonicus, Vertigo Borbojiica, 

 Nevillia [N. G-. Rissoidw, Gibbus Deshayesii, 

 " jjicta, " Moreleti, 



" lucida, " cylindrellus, 



Stylifer speciosus, Ennea Nevilli, 



Nanina Geoffreyi, Cyathopoma Blanfordi, 



Discus serratus, Omphalotropis Borbonica, 



Acicula Mauritiana, Scrobicularia (Capsa) rostrata. 



Descriptions of some new species of Shells, chiefly from Ceylon. 

 By Henry Adams. 



Plicifer (N. G. Styliferidce), Corbula [Azara) rostrata. 



" Nevilli, Nanina Poweri, 



Cyclostrema Nevilli, Cyclophorus Layardi. 



" subdisjuncta. 



A review of the species of the Genera Melo a?id Cymba of 

 Broderip. By T. G. Ponton. 



The author believes TIf. ducalis, M. umbilicata, M. Georginia; 

 and 31. diadema, to be identical. He also believes O. porcina 

 of Lamarck to be the same as O. proboscidalis and C patula, 

 Brod., the young of 0. Neptuni. 



A few years since, when arranging the specimens in the 

 Museums of the Academy of Natural Sciences, I arrived at the 

 same conclusions, except as to the last, (pa^w?a) of which we had 

 no specimen. 



Conchologia Iconica. Parts 274, 275. 4to. London. 1868. 



Unio.— Plates 85 to 93. Sept., 1868. 



The great improvement in identification of the species noticed 

 in our last review of this monograph still continues. The color 

 of the epidermis of Monocondylcea rhomboidea is too light in the 



