PATELLA. 



Plate XIX. 



Species 45. (Mus. Cuming.) 



Patella pica. Pat. testa ovatd, antice aciimiuatd, sub- 

 cochleariformi, depressd, medio elevatd, radiatim rude 

 liratd et costatd, muricato-sq^imniatd, squamis cetate 

 plus minus ohsoletis ; fulvescente-albd, niyro earie pi- 

 catd,intusalhicaHte,Jlavido-fumo tiitctd, viarffi/ie den- 

 ticulato, picato. 



The pied Limpet. Shell ovate, acuminated iu trout, 

 somewbat spoon-shaped, depressed, raised iu the mid- 

 dle, radiately rudely ridged and ribbed, prickly scaled, 

 scales more or less obsolete with age ; i'ulvous-white, 

 variously pied with black, interior white, tinged with 

 yellowish-brown, margin denticulated, pied. 



Iliib. South Seas. 



A characteristic spoon-shaped shell, rudely prickly ridged 

 and ribbed, yeUowish-white, promiscuously blotched with 

 positive black. 



Fig. 46. (Mus. Cuming.) 

 This shell is the young of P. plumieu, represented at 



Plate II., which it is important to figure, as showing the 

 sharper and more crenated structure of the ridges. 



Species 47. (Mus. Cuming.) 



Patella esarata. Pal. lentd rotimdato-ovatd, elevatd, 

 apice antice leviter inclinatd, radiatim liratd, Uris 

 distiiwtis, subremolis, irreynlaribm, rotundatis, tenue 

 corifertiiii, creimtis; pallide fiilvd, mbpetlucidd, Uris 

 ca-rnleo-wif/ricantibus, opacis, intus aryeriteo-iridescente, 

 medio ccendescente-lacted. 



The ploughed Limpet. Shell rotundately ovate, raised, 

 slightly anteriorly inclined at the apex, radiately 

 ridged, ridges distinct, rather distant, irregular, 

 rounded, finely closely crenated ; pale fulvous, sub- 

 peUucid, ridges blue-black, opake, interior silvery iri- 

 descent, milky-blue towards the middle. 



Nuttall, Jay's Catalogue of Shells, p. 38. 



Hah. Oregon, California ; Lieutenant BaskervOle. 



A light silvery shell, rayed with conspicuously defined, 

 blue-black, closely crenated, rounded ridges. 



December, 1854. 



