149 



depressa, fusco-viridis, nigro obscure radiata, subtilissime granu- 

 loso-striata, apice antico, acuto, incumbente ; margine integro : 

 facies interna argentea, cuna reflexionibus succineis, et interdum 

 fusco radiata ; fundo (luce transmisso) elegantissime reticulato, 

 et maculis sagittalis radiato. Long. H, lat. lyV? alt. f . Hah. 

 Feejee Islands. 



This delicate and beautiful species is allied to P. testudinaria, 

 but is more depressed and more delicate in all its characters, and 

 its peculiar marking, as seen by transmitted light, like some of 

 the Navicellse, distinguishes it. It was the only species collected 

 at the Feejee Islands. 



Patella illuminata. Testa inequilateralis, ovato-conica, fuli- 

 ginosa, maculis sparsis flavidis translucidis illuminata, creberrime 

 radiatim costellata : apertura ovata ; facies interna nigro-picea, 

 sericeo splendcns ; fundo flavido. Long. 1 J-, lat. 1^, alt. f poll. 

 Hab. Auckland Islands. 



In shape like P. argentea, with the interior of P. tramoserica. 

 It may be the young of what is figured by Quoy as P. granu- 

 laris. 



Patella fimbriata. Testa elevata, oblique conica, fusco-pur- 

 purea, cinereo tincta, costulis distantibus rotundatis radiata, costu- 

 lis tuberculos fornicates in seriebus concentricis instructos geren- 

 tibus ; apice acuto subcentrali : apertura ovata, limbo lato. nigro 

 pectinate: facies interna nitida, cseruleo-alba, secundum costulos 

 radiata, fundo saturatiori. Long. 1|, lat. ^~, alt. /q. Hah. 

 Straits of De Fuca. 



Much like a small P. granularis in shape. The undulations 

 within, corresponding to the ribs, are marked "svith unusual dis- 

 tinctness. Its ribbed surface and destitution of strice distinguish 

 it from all the varieties of L. pintadina. 



Patella citrullus. Testa depresso-conica, sub-equilateralis, 

 translucida, extus rugoso-undulata, prope apicem lineis granuli- 

 feris radiata, pallide olivacea, intus nitida, plumbea, fundo albido : 

 apertura rotundato-ovata ; margine expanse, acuto. Long. 1£, 

 lat. 1|-, alt. I poll. Hah. Funchal, Madeira. 



This shell resembles somewhat the skin of a cucumber, exter- 

 nally. The radiating striae occupy the upper half of the shell, 

 and the lower half is somewhat imbricated by the stages of 

 growth. It is somewhat like P. Candei., D'Orb. 



