PATELLA. 



Plate VII. 



Species 12. (Fig. a, b, Mus. Cuming.) 



i'ATELL.\ CONSPICUA. Pat. testd ovatd, atitice vix atie- 

 nuatd, conmxiusculd, subpellucidd, radiatim profuse 

 sidcatd et striatd; cmndescente-albd, caridescente- 

 uigro promiscne marmorato-radiatd, intus sulargented, 

 medio opaco-alhd mit vitelUnd, ad marginem conspicue 

 radiafd. 



The conspicuous Limpet. Shell ovate, scarcely con- 

 tracted in front, slightly convex, subpellucid, ra- 

 diately profusely grooved and striated ; bluish-white, 

 promiscuously mottle-rayed with blue-black, interior 

 slightly silvery, opake-white or yelk in the middle, 

 conspicuously rayed at the margin. 



Philippi, Abbild. und Besch. Conch, pi. 3. f. 1. 



Hab. Mouth of the Gaboon, West Africa. 



The dai'k rays which characterize this species are of 

 quite a peculiar mottled style of colouring, and, the shell 

 being of a subtransparent texture, they are seen very dis- 



tinctly through it towards the margin. The inner central 

 nucleus is sometimes yelk-yellow, sometimes marble-while. 



Species 13. (Mus. Cuming.) 



Patella compressa. Pat. testd oblongd, altd, ad latera 

 peciiUariter compremi, undique radiatim striatd, striis 

 obscure remote grarmlatis, tenuiculd ; sordide stra- 

 mined, subpellucidd, intus medio opaco-alhd. 



The compressed Limpet. Shell oblong, high, pecu- 

 liarly compressed at the sides, everywhere radiatelv 

 striated, striae obscurely remotely granuled, rather 

 thin; dingy straw-colour, subtransparent, interior 

 opake-white at the middle. 



LiNN^u.s, Syst. Nat. (12th edit.) p. 1261. 



Hob. Cape of Good Hope. 



A dingy straw-coloured subtransparent shell, rayed 

 throughout with faintly knotted striae, always singularly 

 compressed at the sides. 



October, 1854. 



