234 



WEST COAST SHELLS 



tastes, living on the shores of northern Europe, 

 eastern America, and around Bering Strait. The 

 shell is umbilicate, thin, flesh-colored, polished 

 and shining. It is a little affair, its height being 

 onl} 6 mm., and its diameter a little more. 



Margaritcs lirulata^ Cpr., the Lirulate Marga- 

 rites, {Margarita lirulata). This very variable spe- 

 cies has a globose-conical shell, solid, purplish, or 

 more or less variegated. The surface sometimes 

 has spiral ridges, or lyrae, though sometimes it is 

 nearly smooth. The suture is impressed, the body- 

 whorl convex beneath, the aperture oblique and 

 very iridescent within. The diameter is 4 or 5 

 millimeters. This species, which lives chiefly in the 

 middle north, includes forms which were formerly 

 known as Glbbula succincta, Gihhula parcipkta, 

 and several other species. 



Margarites vorticifcra^ 

 Dall, the Flattened Marga- 

 rites, Figure 233, has its 

 home in Bering Sea and ad- 

 jacent northern regions. 

 The shell is decidedly flat- 

 tened, and is of a salmon- 

 pink color, very pearly, and 

 has a diameter of nearly an 

 inch. 



We now come to the ge- 

 nus T'egi/Ja^ under which is 

 the subgenus Cldorostoma^ 

 which literally means 

 Fig. 233. X I (*) Green-mouth, the reference 



