33 
Natiea duplicata Say, the calloused moon-shell, is most 
abundant upon the sandy beaches of middle and southern New 
Jersey. It is large, brown or gray above but snowy white on 
the base around the tongue-shaped, rich chestnut brown cal- 
lus which passes out of the 
aperture. This is a beau- 
tiful shell when perfect. 
The Hero Natica, Natiea 
heros Say, growseven 
larger than NV. duplicata, i 
but it has no callus, being 
open beneath. I have 
found it less abundant on 
this shore than the other 
species. There is quite a 
pretty variety occasionally 
met with which has the 
plainess of its ground-color 
relieved by three rows of 
Fig. 45. Natica heros. 
brown spots. It is known as WN. heros variety triseriata Say. 
The eggs of Natica are connected into 
a broad ribbon by soft mucus, which be- 
comes covered and filled with sand, and 
curves into a shape like a saucer without 
a bottom, and with a segment broken from 
N- heros var. triseriata, ifs rim. By holding this up to the light 
the small eggs may be seen through it. 
2 
¢t 
AMINES SP ee 
