PATELLA. 



Plate XLI. 



Species 135. (Mus. Cuming.) 



P.\TELLA occiDENTALis. Pat. testd qnadrato-ovatd, ele- 

 vato coiwexd, radiatim costatd, costis snperjiciariis, ob- 

 iusis, alternat'mi brevioribus ; fiiscescente, mgro-tessel- 

 lafd, costis pellucido-albk, i>?ii(s albidd. 



The westekn Limpet. Shell somewhat squarely ovate, 

 elevately convex, radiately ribbed, ribs superficial, 

 obtuse, alternately shorter, brownish ; tessellated with 

 black, ribs transparent white, interior whitish. 



Hab. West Indies. 



The alternate ribs of this species do not reach to the 

 apex, and they are all of a transparent white substance, 

 whilst the interstices are confusedly tessellated with black 

 upon a brownish ground. 



Species 136. (JIus. Cuming.) 



Patella parasitica. Pat. testa orbiculari, elevato-cou- 

 vexd, cyatUij'onni, apice autice incl'mato, striata aut 

 rudi cancellatd ; latescente-albd, cmndm-niyro vivide 

 radiatim vet imdatim strigatd, intus cceridescente. 



The parasitic Limpet. Shell orbicular, elevately con- 

 vex, cup-shaped, apex inclined anteriorly, striated or 

 rudely cancellated; yellowish-white, radiately or un- 

 dately streaked with blue-black, interior bluish. 



D'Orbigny, Voy. dans I'Amerique, pi. 81. f. 1 to 3. 



Hab. Valparaiso (on the rocks) ; Cuming. 



A little raised cup-like shell, variously rayed or waved 

 with blue-black upon a yellowish ground. 



Species 137. (Mus. Cuming.) 



Patella Balanoides. Pat. testd ovata, elevato-convexd, 

 radiatim costatd, costis aitgustis, subrudibus, iiiterstitiis 

 concavis ; fuscescente-atbd, circa apicem punctls nigris 

 promiscul aspersd, intus alba, medio castaiied. 



The Barnacle Limpet. Shell ovate, elevately convex, 

 radiately ribbed, ribs naraow, rather rude, interstices 

 concave ; brownish-white, promiscuously sprinkled 



round the apes with black dots, interior whitish, 

 chestnut in the middle. 

 Hab. West Indies. 



The ribs of this species are narrow, irregular, and rather 

 rude in structure, with the interstices between them gra- 

 dually concave. The outer surface of the shell is of a 

 dull stone-white, promiscuously dotted round the apex 

 with black. 



Species 138. (Mus. Cuming.) 



Patella leucopleura. Pat. testd elevato-conied, cras- 

 siusculd, basi fere orbiculari, apice obtnsd, radiatim 

 liratd, liris subirregnlaribus,funicHlatis ; carnlesceutr- 

 cinered, liris nigricantibus, intus albd, margiue cou- 

 spicue Uneato. 



The white-side Limpet. Shell elevately conical, rather 

 thick, nearly orbicidar at the base, obtuse at the 

 apex, radiately ridged, ridges rather irregular, corded; 

 blmsh-ash, ridges blackish, interior white, margin 

 conspicuously lineated. 



Gmelin, Syst. Nat. 13th edit. 



Hob. West Indies. 



Particularly distinguished by its raised conical form, 

 rayed throughout with fine blackish corded ridges upon a 

 light slate ground. 



Species 139. (Mus. Cuming.) 



Patella coffea. Pat. testd ovatd, convexo-depressd, ra- 

 diatim dense lirato-striatd, semper pcrerosd ; intus ejc- 

 tusque fusco-nigrd, margine tmite denticulato. 



The coffee Limpet. Shell ovate, convexly depressed, 

 radiately densely ridge-striated, always very much 

 eroded ; brown-black within and without, finely den- 

 ticulated at the margin. 



Hab. Valparaiso; Cuming. 



A dark brown species, of simple character, always nuich 

 eroded. 



May, 1855. 



