" THE 
THORNY MUREX. 
VAR. 
SOR FH 
GENERIC CHARACTER. 
Animal allied to a Slug. 
Shell univalve, spiral, roughened with mem- 
branaceous sutures. 
Aperture ending in a strait or subascending 
channel. 
SPECIEIC CHARACTER, ©. 
Whitish MUREX, with a triple row of setaceous 
spines, and long beak with similar spines. 
Var. With extremely long spines. 
The Thorny Woodcock. | 
The genus Murex, of which the species are ex- 
tremely numerous, is distinguished, in general, by 
a peculiar roughness of surface, which either runs 
out into long spines, or into processes more or less 
crisped or foliated. The very rare shell exhibited 
on the present plate is principally found in the In- 
dian and American seas, and varies as to color and 
length of the beak and spines. 
