[MOLLUSCA. 



Class GASTEROPODA. 



Order PULMONATA. 



Suborder GEOPHILA or STYLOMATOPHORA. 



Group AGNATHA. 



Family TESTACELLID^. 



Subfamily STREPTAXINiE.] * 



Animal carnivorous, slug-like or snail-like ; a shell generally 

 present, but varying much in form. 'No jaw (hence the group is 

 often distinguished as Agnatha). Eadula with numerous rows of 

 long, narrow teeth, usually pointed. 



Distribution. Temperate and tropical regions of the world. 



The majority of the genera are African or South American. 

 Two are Indian, both shell-bearing. 



Synopsis of Genera. 



Shell heliciform, last whorl excentric Streptaxis, p. 1. 



Shell pupiform Ennba, p. 16. 



Genus STREPTAXIS. 



Streptaxis, Gray, Loudon's Mag. N. H. new ser. i, 1837, p. 485 ; 

 Stol. J. A. S. B. xl, 1871, p. 159 (anatomy). 



Type, S. nobilis, Gray, from Sierra Leone. 



Range. South-eastern Asia and a few of the islands ; Mascarene 

 Islands ; Tropical Africa and South America. Tound in the 

 Indian Peninsula to the southward only, in Ceylon, [Andaman and 

 Nicobar Islands,] Assam, and Burma, but not in the Himalayas 

 except east of Bhutan. 



F'xg.l.— Streptaxis pfeifferi. \. (After Stoliczka.) 



Shell thin hyaline, or thicker alabastrine, heliciform, the last 

 whorl or last two whorls excentric, diverging from the axis of the 

 upper whoi'ls. 



* In this volume the additions to the MS. as left by Dr. W. T. Blanford 

 have been made by Lt.-Col. H. H. Godwiu-Austeu and are placed between 

 brackets. 



