PATELLA. 



Plate III. 



Species 4. {Yig. a, I/, Mus. Cuming.) 



Patella gkanatina. Fat. testa ovatd, suhodagond, au- 

 tice coarciaiu, mhelnatd, radiatim fortiter codatd, 

 costis nnmerosis, aubcreiiidatis, octo plermtique majori- 

 htis, subacutis ; ccErnlescenie-albd, oUvaceo-nigro pro- 

 fuse maculatd, intus nucleo amplo purpureo-rvfo. 



The gaenet Limpet. SheU ovate, suboctagonal, con- 

 tracted in front, rather raised, radiately strongly 

 ribbed, ribs numerous, subcrenulated, eight generally 

 larger, rather sharp ; bluish-white, profusely spotted 

 with olive-black, interior with a large deep purple- 

 red nucleus. 



LiNN.-EDS, Syst. Nat. (13th edit.) p. 1358. 



Hah. Cape of Good Hope. 



Distinguished by its mottled olive-black spots on the 

 outside, and deep purple burnt-red nucleus inside. There 

 is also, in young specimens, an appearance of crenulation 

 both on the ribs and in the interstices. With age the ribs 

 become sharper and the crenulation more obscure. 



Species .5. (Fig. a, b, Mus. Cuming.) 



Patella plumb e a. Pat. testa suboblongo-ovatd, ad la- 

 tcra autki coarctatd, convexiusculd, radiatim costatd, 

 co.itis nmnerosis, parvis, irregularibus, striis concen- 

 tricis cremdatis ; nigricante-plumbed, costis satura- 

 tioribits, intus paUide carulescente-jilmnbed, nucleo 

 amplo, fuscescente-vitelUuo. 



The lead Limpet. Shell somewhat oblong-ovate, con- 

 tracted anteriorly at the sides, rather convex, ra- 

 diately ribbed, ribs numerous, small, irregular, cre- 

 nulated with concentric striae ; blackish lead-colour, 

 ribs darker, interior pale bluish-lead, nucleus larger, 

 brownish-yelk. 



Lamakck, Anim. sans vert. (Deshayes' edit.) vol. vii. p. 

 530. 



Hab. Senegal. 



Of a uniform dark lead-colour, rayed with small almost 

 superficial crenulated ribs, and having a conspicuous opake- 

 brownish yelk nucleus in the interior. 



October, 1854. 



