MARINE UNIVALVES 



153 



means confined to conditions that we ourselves should 

 consider as congenial. 



Beringius frielei, Dall, Figure 132, is another 

 large shell of this genus, which bears the name of 

 the great navigator. Vitus Bering was a Dane by 

 birth, but he entered the Russian service and made 

 many discoveries in the northern waters. He was 

 wrecked on the island that bears his name in 1741, 

 and there his life was ended. This specific name was 

 given in honor of a Norwegian gentleman, Mr. Her- 

 man Friele, of Bergen. This shell is covered with 

 a persistent, reddish- 

 brown epidermis, and 

 it is delicately sculp- 

 tured. The aperture is 

 snowy white within. 



Another magnifi- 

 cent shell of this series 

 is shown in Figure 

 133. Its name is Be- 

 ringius kennicottii^ 

 Dall, Kennicott's Be- 

 ring-shell. In spawn- 

 ing-time is comes into 

 shallow water on the 

 coast of Kadiak Island 

 but afterwards it with- 

 draws to greater 

 depths. It has a light 

 brown covering, under 

 which the shell is 

 white or purple. Fig. 133, x § (*) 



