65 
PADOLLUS. 
Papottus, De Montfort. 
CHARACTER GENERICUS. 
Testa univalvis, depressa, auriformis; discus perfora- 
tus; apex spiralis, spira dorsali; os ovale, patulum, 
irregulare. 
PADOLLUS. 
GENERIC CHARACTER. 
Shell univalve depressed ear-shaped; disk perforated ; 
apex spiral, the spine dorsal ; mouth oval, spreading, irre- 
gular, 
This genus is readily distinguished from Haliotis (Ear- 
shell) by the irregular form of the outer edge or lip; the 
disk has fewer perforations, and the spire is placed farther 
on the back. 
The animal is unknown, but it is probably not very un- 
like that of the Earshell. 
