CONCHOLOGY. 



129 



Pleurotoma muricata. 



P. echinata. 



P. flavidula. 



P. iniperialis. 



P. auriculifera. 



P. spirata. 



P. bimarginata. 



P. cingulifera. 



P. Babylonia. 



P. marmorata. 



P. crispa. 



P. nodifeia. 



P. maculata. 



Pleurotoma interrupte 



P. cincta. 



P. crenularis. 



P. unizonajis. 



P. lineata. 



P. fascialis. 



P. buccinoides. 



P. virgo. 



P. undosa. 



P. tigrina. 



P. albina. 



P. mitra. 



P. elegans. 



P. curvirostris. 



P. decussata.* 



P. bicarinata.* 



3. Genus Tnrbinella. PI. XI. 



Animal. Imperfectly known. 



Shell. Usually turbinated (but sometimes turriculated), 

 wrinkled, thick; spire slightly variable in form; aperture elon- 

 gated, terminated by a straight canal, and often rather short ; the 

 left edge nearly straight and formed by a callosity concealing the 

 columella, which has two or three nearly transverse and unequal 

 folds ; the right edge entire and trenchant. Found in the Equa- 

 torial or Australian seas. Twenty-three species. 



Turbinella scolymus. 



T. napus. 



T. pugillaris. 



T. rapa. 



T. pyrum. 



T. leucozonalis. 



T. cingulifera. 



T. mitis. 



T. infundibulum. 



T. lineata. 



T. triserialis. 



Turbinella ocellata. 

 T. rustica. 

 T. polygonia. 

 T. carinifera. 

 T. rhinoceros. 



T. cornigera. : 1 



T. ceramica. 

 T. capitella. 

 T. globulus. 

 T. craticulata. 

 T. nassatula. 



T. variolaris. 



