DESCRIPTION. 
163 
Fig. 3. Patella fornicata. 
Shell oval, recurved towards the apex; lip 
lateral, concave. 
Lister Conch. Tab. 545. Fig. 33. 
Specimen whitish, mottled and marked with 
brown waved lines, darker towards the tip and 
somewhat cinereous; lip white, prominent and 
lunate ; margin acute. 
Inhabits the Mediterranean and West Indies. 
Fig. 4. P. equestris. 
Shell orbicular, wrinkled outwardly; lip verti- 
cal, perpendicular. 
Lister Conch. Tab. 546. Fig. 38. 
Specimen white, hyaline, conical, obliquely 
truncate at the base, covered with irregular folds, 
wrinkles, and strise ; lip projecting, a little oblique, 
open on one side, situated under the centre of the 
vertex, formed like a canal. 
Inhabits the Indian and American Seas. 
Fig. 5. P. granatina. 
Shell angular, broader at one end, with nume- 
rous mmricate striee. 
