Rock Shells. 51 
is a large and very beautiful shell ; this 1s the Broad- 
winged Strombus (S. latissimus), probably from 
latesco—to wax or grow broad, or large; issimus 
being in the superlative degree, would indicate that 

this shell was very much so, as we find it is, some- 
times measuring as much as twelve inches across. 
In Plate IT. is a representation of this handsome 
shell, greatly reduced in size, of course. See Fig. 4. 
We here give a figure, as more curious than beauti- 
ful, of the Scorpion Pteroceras (P. scorpius), which 

CHINESE SPINDLE. 
also belongs to the Strombide family; as does the 
curious Chinese Spindle (fostellaria rectirostris). 
The generic name of the first of these species 
