240 



WEST COAST SHELLS 



Fig. 241, X I (*) 



HciUstyli/s pi/poides, Dall, the 

 Pupa Sea-style, Figure 241, is an- 

 other species that is seldom tound in 

 California, thou<^h it is plentiful in 

 British Columbia. It has a little 

 shell only 6 mm. long, and its ap- 

 pearance is well shown in the greatly 

 magnified engraving. 



h'wtia fencstrata^ Cpr., the Win- 

 dowed Liota, has a small, flattened, 

 whitish shell, cut into numerous 

 square pits by the crossing of ribs 

 and lines. Its diameter is one-eighth of an inch. 

 IJotid Lici/t?costiita, Cpr., the Sharp-ribbed Liotia, 

 is smaller than the last, less flattened, and is marked 

 with sharp, spiral ridges, but without cross-lines; 

 its color is whitish. 



Vitrinclla zmUiamsoni^ Dall, 

 Williamson's \'itrinella. Figure 

 242, has a small, white, de- 

 pressed shell, ^.^ mm. in diame- 

 ter. Its surface is polished. It 

 was found on the beach at San 

 Pedro, and was named in honor 

 of Mrs. M. Burton William- 

 son, of Los Angeles. 



Vitrinella oJdroydu Bartsch, 

 Oldroyd's \'itrinella, resembles 

 the last, but is smaller and rela- 



tivel}- thicker; it has three and three-fourths whorls. 

 It has been found at San Diego, San Pedro and 



Fig. 242, X \ (*) 



