TOPS AND TURBANS. 241 
upon the roof and walls of some rock grotto which 
had been left by the early morning tide. I have 
also gathered them from the long seaweeds which 
gerow near the rocky shore. The length of one of 
these shells is about three-quarters of an inch, the 
operculum is perfectly circular, and the aperture 
of dead shells is often inhabited by a thin variety 
of White Slipper-shell. 
Calliostoma gemmulatum, Cpr., the Gemmed 
Top-shell, is of a conical shape, the whorls of its 
shell being ornamented with strings of granules or 
beads; each whorl having two principal rows, 
with several smaller ones. The color of this south- 
ern shell is gray, with some dark stripes run- 
ning down from the apex. Its height is only 15mm. 
or less. 
Calliostoma 
gloriosum, Dall, 
the Glorious 
Top-shell, Fig- 
ure 268, is the 
name of the fine 
species which is 
occasionally 
found on the 
Calfornia coast. 
The engraving 
shows no color 
painting, and as 
it is so much en- 
Fig. 268, x § (*) larged the gran- 
