PATELLA. 



Plate XVI. 



Species 36. (Fig. a, b, c, Mus. Cumiug.) 



Patella vakiegata. Pat. tedd orhmdari-ovatd, sub- 

 acuminato-convexd, antice paululimi inclmatd, radia- 

 tim granoso-liratd, granis obtusis, valde irregularibm ; 

 lutescente, nigro-purpureo interrupte radiatd et macu- 

 latd, intus obscure semipellncidd, argenteo-iridescente. 



The vaeiecated Limpet. Shell orbicularly ovate, sub- 

 acuminately convex, a little inclined anteriorly, ra- 

 diately granosely ridged, grains obtuse, very irregu- 

 lar ; yellow, interruptedly rayed and blotched with 

 very dark purple, obscurely semitransparent within, 

 silvery iridescent. 



Keeve, Conch. Syst. vol. ii. pi. 136. f. 1. 



Hah. Australia. 



A rather acumiuately raised shell, roughly bluntly gra- 

 uided, marked with numerous spots and broken blotched 

 rays of very dark purple. 



Species 37. (Mus. Cuming.) 



Patella Cumingii. Pat. testa orbiculari-ovatd, subde- 

 presso-convexd, antice leviter attenuatd et inclhiatd, 

 liris tenidbus confertim radiatd, in jjmiore striis con- 

 centricis eleganter decussatd ; lutescente ant virescente- 

 albd, intense viridi dense tessellatim tinctd, intus caru- 

 lescente-albd, margine lato macnlato. 



Cuming's Limpet. Shell orbicularly ovate, rather de- 

 pressly convex, slightly attenuated and inclined ante- 



riorly, closely rayed with fine ridges, in the young 

 shell elegantly cancellated with concentric strije ; 

 yellowish or greenish-white, densely tesseUately mot- 

 tled with dark green, interior bluish-white, with a 

 broad mottled border. 

 Hab. Valparaiso ; Cuming. 



A very dark green and yeUowish-white mottled shell, 

 rather depressly convex, characterized internally with a 

 conspicuous broad mottled border. It is closely allied to 

 the P. diaphana, Nuttall, from Mazatlan. 



Species 38. (Mus. Cuming.) 



Patella clypeater. Pat. testa dejiresso-orbicidari, 

 temdcidd, dense radiaiim. Virata, liris irregularibus, 

 obsolete tiiberculato-undatis, ferrugineo-fuseo pulcher- 

 rime tinctd et macnlatd, intus argenteo-iridescente, 

 medio vivide piirpureo-ferrugined. 



The shield Limpet. Shell depressly orbicular, rather 

 thin, densely radiately ridged, ridges regular, obso- 

 letely tubercularly waved, very beautifully stained and 

 mottled with rust-brown, interior silvery iridescent, 

 bright purple-rust in the middle. 



Lesson, Zool. Voy. de la Coquille, p. 419. 



Eab. Monterey, Lower California ; Hartweg. 



A rather thin subdepressed species, profusely stained 

 and dotted with copper-rust-browu, the interior being 

 brilliantly silvery mdescent. 



December, 1854. 



