JOURNAL OF CONCHOLOGY. 179 



BIBLI OGRAPHY. 



Die Mollusken der Maskerenen und Seychellen 



(The MoUusca of the Mauritius and Seychelles). — Von Prof. E. 

 V. Martens. 



This large and elaborate work which is illustrated by 4 

 colored plates, is prefaced by a lengthy list of the authors who 

 have written on any of those interesting and productive islands, 

 with the titles of their works. The geographical distribution of 

 each species is well indicated by a series of signs of -which a full 

 explanation is furnished at the commencement of the volume. 



One hundred and sixty-three species of land shells which are 

 ranged in two great groups termed Pnenmopoma and Styleuiviato- 

 phora. Pveitviopovia embraces the sections Cydostoviacea and 

 Helicinid(s^ and 41 species are catalogued. 



One species of Cyclostomacea, Oiuphalotropis Moebii (pi. >'ix., 

 f. i) is described as new. 



The group Stylenimatophora is subdivided into Oxygnatha, 

 with 31 species. Aulacognatha with 39, of which one, Ccecilia- 

 nella ( Geostilbia) is noted as new. Agnatha has 43 



species, Elasmognatha has but six, and Vaginulidce three. 



Of brackish water species, four are Truncatellidce, and 

 nineteen Aiiriculidce. 



In the freshwater shells, five are LinintvidcE^ ten Fali/dinidce, 

 and eight are Neritidce, one of which, Neritina (Neritilia) 

 consimilis^ is described as new. 



The marine shells are noted from Madagascar in addition to 

 the localities cited in the preceding groups. Twelve hundred and 

 thirty-two species are catalogued, distributed as follows: — 

 Cephalopods and Pteropods 12, Gastropods 985, Bivalves 232; 



