LEIOSTRACA.— Plate III. 



Aiiotliei- species of the more oval form, and differing 

 from Leiostraca Mmdoroensis in the whorls being shorter 

 and less inflated. 



Species 19. (Mns. Cuming.) 



Leiostraca pau-^cilltis. Lei. testa, parva, alba, peUit- 

 culd, pyramulaU, apice acuta ; avfractibm hrevihus, 

 rectiusculis ; aperturd curia, columella tortud, lahro 

 termi, infra subexpamo. 



The small Leiostraca. Shell small, white, pellucid, 

 pyramidal, apex acute ; whorls short, rather straight, 

 aperture short, columella tortuous, outer lip thin, 

 slightly expanded beneath. 



A. Adams. 



Leiostraca clava, A. Adams. 



Hah. Japan. 



As compared with Leiodraea pura this shell has the 

 apex more pointed, and the aperture more expanded at 

 the base. 



Species 20. (Mus. Cuming.) 



Leiostraca vincta. Lei. testa parvd, subfusiformi, te- 

 nia, pallidd, lineis rubris duabus props medium an- 

 fractmim cinctd ; anfractibus subiiiflatis, idtimo ovali, 

 apice acuto ; aperturd ovali. 



The bound Leiostraca. Shell small, subfusiform, thin, 

 pale, girt with two red lines near the middle of the 

 whovls; whorls slightly inflated, the last oval, open, 

 apex acute ; aperture oval. 



Hab. ? 



Species 21. (Mus. Cuming.) 



Leiostraca Mari^. Lei. testa albidd, opacd, subcylin- 

 dricd ; anfractibus brevibus, rectiusculis, suturd dii- 

 tinctd, apice obtuso ; aperturd subovali, columella elon- 

 gatd, rectiusculd. 



Mary's Leiostraca. Shell whitish, opake, subcylin- 

 drical ; whorls short, rather straight, suture distinct, 

 apex ol)tuse ; aperture suboval, columella long, rather 

 straight. 



A. Adams. 



Hab. Japan. 



A very cylindrical species, with obtuse apex. 



