OF CONCHOLOGY. 



239 



Arrangement of the Families of Mcllusks. Prepared for the 

 Smithsonian Institution by Theodore Gill. Smithsonian Miscel- 

 laneous Collections. 8vo., 49 pp. Washington, D. C, Feb., 1871. 



Although the author merely claims for this work that it is a 

 compilation embracing the results of recent studies of malaco- 

 logists throughout the world, yet a far higher rank must be 

 awarded to it by those who can appreciate through being engaged 

 in like studies, the immense amount of research and the careful 

 judgment required in arranging the material ; besides, there is 

 much contained in this little book that is original with its author, 

 being founded on his own careful researches into the history of 

 the mollusca during many years. The preliminary pages 

 include a discussion of the extent and value of the classes, 

 orders and families. The systematic arrangement includes 

 356 families with their synonymic designations in the works 

 of other systematists. This very useful work closes with 

 a very complete descriptive catalogue of the papers and books 

 consulted in its preparation, including a systematic index to 

 Reeve's Conchologia Iconica. 



II.— FOREIGN. 



BRITISH. 



Journal of the Asiatic Society of Bengal. Pan 11., No. 4. Calcutta. 

 1870. 



Descriptions of some new Land Shells from the Shan States 

 and Pegu. By W. Theobald, Jr. 



Jerdonia Phayrei, Spiraculum Gordoni, Bens.? 



Alycceus bifrons, Pupa fartoidea, 

 " cucullatus, " Salwiniana, 



" Feddenianus, Vitrina venusta, 



Diplommatina Salioiniana " Ataranensis 



" pupceformis, Vanina " 



" affinis, Stenogyra terebralis, 



" scalaroidea, Bithinia nassa, Theobald, 



Lithoglyphus Martabanensis. 



On the Land Shells of Bourbon, with Descriptions of a few 

 New Species. By Geoffrey Nevill. 



Helix Salaziensis, Vertigo incerta, 



Nanina implicata, Succinea mascarensis, 



" Cordemoyi. 



Critical remarks are made upon many previously described 

 species. 



