DESCRIPTION. 
129 
Fig. 6. Hinge of the flatter Valve of Spon- 
DYLus Gadaropus. 
Fig. 6. Spondylus GcBdaropus. 
Shell slightly eared, spinous. 
Lister' Conch. Tab. 206. Fig. 40. 
Specimen white, orange towards the margin, 
pectinate with knotted ribs on the upper valve, 
lower one tuberculate and rough, obliquely pec- 
tinated. 
Inhabits the Mediterranean, Red, Indian, and 
American Seas. 
The varieties of this species are extremely nu- 
merous ; those which are furnished with spines are 
considered the most valuable, and increase in esti- 
mation in proportion to the length and beauty of 
the appendages. 
♦ — 
PLATE VIII. 
Fig. 1. Hinge of Chama Gigas. 
Fig. 2. Chama Gigas. 
Shell folded, ribs with arched scales ; posterior 
slope gaping. 
K 
