MARINE UNIVALVES 



133 



Fig. 102, X •] (*) 



Fig. 104. X i (*) 



be followed, there is absolutely no 

 escape from the conclusion above in- 

 dicated." Concerning another change 

 he remarks, "It would have to come 

 sooner or later, and it is probably best 

 to have it over and done with. If we 

 do not do so, the evil day is only 

 postponed." 



This species is dredged alive off 

 southern California, and it is also 

 found in a fossil condition. 



T'urris vinosa, Dall, 

 the Tipsy Turret-shell, 

 is shown in Figure 

 103. This is a north- 

 ern species, found 

 around the Aleu- 

 tian Islands and in 

 that vicinity. It 

 was described by 

 Dr. Dall in 1874. 

 It also has a sinis- 

 tral shell, though 

 it differs materi- 

 ally from the last 

 species in other respects. 



Figure 104 introduces us to 

 another northern shell, 80 mm. in 

 length. Its home is in Bering 

 Sea, and its name is T'urris circin- 

 ata, Dall, the Girdled Turret- 

 shell. As shown in the figure 



Fig. 103. X 5 (*) 



