PATELLA, 



Plate XXII. 



Species 54. (Fig. a, b, c, Mus. Cuming.) 



Patella fdnebbis. Pat. testa ovatd, antice mhattenu- 

 atdy elevato-convexd, lavigatd, costis tuberculatis ra- 

 diatd, tuhcrciiUs inmidis, mierdum siibdistantibm ; 

 sordide nigrd, ad apicem ferrugineo-albd, intus opaco- 

 albd, interdwm, ferrtigineo tinctd. 



The mourning Limpet. Shell ovate, slightly attenu- 

 ated in front, elevately convex, smooth, rayeJ with 

 tubercled ribs, tubercles swollen, sometimes rather 

 distant; dull black, rusty-white at the apex, interior 

 opake white, sometimes rust-tinged. 



Hah. ? 



A very characteristic dull black species, smooth, but 

 rayed with tubercularly uoduled rather distant ribs. 



Species .55. (Mus. Cuming.) 



Patella electeina. Pat. testa orbicidari, autlce atte- 

 nuatd, snbdepressd, apice acuta, radiatim dense liratd, 

 liris rudibiis, irregularibm, obtuse s^uamatis ; pallidi 

 fulvd, circa apicem et inter liras ferrugined, intus 

 pelluciJo-alhd. 



The ambek Limpet. Shell orbicular, attenuated in 



front, rather depressed, sharp at the apex, radiately 

 densely ridged, ridges rough, irregidar, bluntly squa- 

 mate ; light fulvous, rusty about the apex and be- 

 tween the ridges, interior transparent white. 

 Hah. Australia. 



Of a subtransparent textui-e, stained with amber rust 

 about the apex and between the ridges, the colour show- 

 ing conspicuously through in the interior. 



Species 56. (Mus. Cuming.) 



Patella petalata. Pat. testa ovatd, subdepressa, obso- 

 lete cancellato-liratd ; pelMcido-fiancaute, radiis latis 

 nigricante-purpureis pictd, intus pellucido-corned, uu- 

 cleo castaneo-purpureo. 



The petaled Limpet. Shell ovate, rather depressed, 

 obsoletely cancellately ridged ; transparent yellow, 

 painted with broad blackish-purple rays, interior 

 transparent horny, nucleus chestnut-purple. 



Hub. Australia. 



A semi-transparent yellow horny shell, conspicuously 

 painted with broad, rich, blackish-purple rays, which are 

 sometimes a little broken up. 



December, 1854. 



