TOPS AND TURBANS 



227 



Fig. 220 



md) ind^quale.'" If the name of the genus only 

 appears the name of the species should agree with it 

 in gender, hence the different endings which may 

 sometimes be a little contusing to one who is not 

 familiar with the Latin language. 



From a large shell we turn to a very small 

 one, Leptothyra carpenteri^ Pilsbry, the Red 

 Turban-shell, shown in Figure 220. The 

 whorls of this little shell are few in number, 

 and they are marked with fine, distinct, spiral ridges. 

 The little operculum is solid and shelly. The color 

 is reddish, sometimes distinct and sometimes banded 

 or faded. This species may be found at low tide, 

 living upon rocks, but the hermit crabs bring up 

 many more dead specimens. 



Leptothyra baccula^ Cpr., the Berry Turban-shell, 

 is shaped like the last, but it is smaller, being only 

 one-eighth of an inch in diameter. It is nearly 

 smooth, dark or ashy in color, and it is found in the 

 south, especially around Catalina Island. 



Norrisia nor- 

 risii, Sby., the 

 Smooth Turban- 

 shell, Figure 

 221, is another 

 southern species. 

 The sh e 1 1 is 

 quite smooth 

 and is of a rich 

 brown color; the 

 rim of the um- 

 bilicus, however, 



Fig. 221 



