90 



WEST COAST SHELLS 



white in color, smooth, with a polished surface, and 

 marked with fine, concentric lines. Old specimens 

 show a marked tendency to thicken the shell from 

 the inside. This species is found more abundantly 



in the north. 



Figure 66 



gives two 

 views of 



Fig. 67 



^ el Una hut- 

 Fig. 66. X I (*) • toni^ D a 1 1, 



Button's Tellen, which was formerly known as 

 Angulus obtusus^ Cpr. It may be found from Alaska 

 to the Gulf of California. In the left-hand figure 

 an internal, strengthening rib is seen just in front 

 of the sinus. The shell is thin, white, and polished, 

 but sometimes it has a greenish periostracum. 



^ellina carpenter!, Dall, Carpen- 

 ter's Tellen, formerly known as Angu- 

 lus variegatus, Cpr., resembles Figure 

 67, but is smaller. Its range is nearly 

 as great as that of the last species. It 

 is pink and white, glossy, flat and narrow, hardly 



half an inch long. 



^ellina idae, 

 Dall, Ida's Tel- 

 len, is well shown 

 in Figure 68. 

 This rare and 

 beautiful shell 

 was named in 

 1891 in honor of 

 Mrs. Ida Shepard 

 Oldroyd. It has 



Fi,g. 68 (*) 



