84. DR. J. FE. GRAY ON THE TRIONYCHID#, [Feb. 23, . 
it is probably the young of a species that has not come under my 
observation. : 
Aspilus cariniferus. 
The following species probably belong to this genus, but I have 
not been able to examine the skulls of them :— 
2. AspiLus ? PUNCTULATUS. 
Dark grey brown; back of the shield with numerous minute white 
specks, and a narrow thin white margin ; beneath white. Head dark, 
with minute white specks above, and larger white spots on the chin 
and throat, with a large irregular-shaped spot on the side of the 
neck behind the angle of the gape; the specks and spots on the 
head regularly dispersed ; sternal callosities not developed. 
