CHAPTER VIII 
MARINE UNIVALVES 
Myurélla simplex, Cpr., the Simple Au- 
ger-shell, shown in Figure 138, is a south- 
ern mollusk, having a pretty, slender, coni- 
eal shell. The spire winds gracefully up- 
wards, and ends in a sharp point at the 
apex; while at the other end of the shell the 
aperture is small, and ends in a short, re- 
eurved canal. Following the sutures is a 
spiral thread of beads, which adds much to 
the attractiveness of the shell. The length is an 
inch or more, the whorls are about twelve in num- 
ber, and the color is whitish or brown. This shell 
is our representative of a large number of tropi- 
‘al species of similar form, some of which are 
very strong, and as long as your hand. 
Figure 139 also shows our rep- 
resentative of a large genus of 
shells, most of which are found in 
tropical seas. Its name is Conus 
califormcus, Hds., the California 
Cone. While large and beautiful 
specimens of the Cone-shells are 
found in the warm water of the Pa- 
Fig. 139, x cific and Indian oceans, our little 
species is very humble, being about an inch in 
length, while its surface is of a sombre chestnut 
color, though one may be found occasionally that 
has a brown, hairy epidermis. Specimens of this 
Fig. 138 
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