238 



WEST COAST SHELLS 



Fig. 237 



is 35 mm., and its breadth is 32 mm. Specimens 

 from Monterey have been found which are distorted 

 in form and ciark red in color. The ordinary form 

 is found around Vancouver Ishmd, though the spe- 

 cies seems to have a wide range. 



T'cgula viridula^ var. ligulata^ 

 Mke., (^Chloro stoma vmdulu??i)^ the 

 Banded Turban-shell, is well shown 

 in Figure 237. It is the same shell 

 that was formerly calleci Omphalius 

 fuscescens. It has a strong, solid, 

 turban-shaped shell, whose rusty 

 brown whorls are banded with raised spiral lines. 

 These lines are broken or beaded, and sometimes are 

 dotted with black, giving the shell a very character- 

 istic appearance. The operculum, as in nearly all 

 of the species ot this group, is thin, horny, and cir- 

 cular. The umbilicus is large and distinct, while 

 the lower part of the circular aperture is marked 

 with rounded knobs. 



Solariella pera?7iabilis, Cpr., the Lovely Solariella, 

 has a small turban-shaped shell which is greatly or- 

 namented with delicate sculpturings. The aperture 

 is perfectly round, and the whole 

 shell appears like a growing tube 

 coiled around an open umbilicus. 

 The spiral ridges of the whorls ^2?£ 

 are crossed by innumerable fine 

 lines. Externally the shell is 

 gray, while within it is rainbow 

 colored. From one-fourth to 

 one-half of an inch across. It Fig. 238. x i (*) 



