229 



Leglt 11. Cuming ad liltora Peruviae (Lambeyeque, 

 Pacosmayo). 



Proceedings. 1834. p. 47. 



9. Petricola robusla G, li,^Sowerbi/, 



P. tesLa rotuudato-subtrigona, subgibbosa, solidiuscula, 

 extus rufesccnti-fusca, intus nigricantc; radiatim costata, 

 costis anticis tcnuioribus conferlioribus, poslicis aifioribusj 

 Interstitiis omnibus exllissime decussatim striatis; latere an- 

 tico rotuudato, postico subacumlnato; marglne dorsali de- 

 clivi. 



Long. 1-2 polL, lat. 08 poll., alt. 09 poll. 



Legit IL Cuming rupibus submaiinls adhaerentem , ad 

 Panamam et ad Insulam Sluerte. 



Proceedings. 1834. p. 47. 



10. P e t r i c o 1 a a m y g d a 1 i n a G. B. Soicerhy. 



P. tesla tenul, subhyallna, flavcscente, obovata, laevi; 

 laterc antlco brevisslmo, angustiorc; postico longlore, al- 

 tiore, lamellis nonnullls elcvatls distantibus ornato. 



Long. 1-3 poU., lat. 0-5 polL, alt. 08 poll. 



Legit H. Cuming mclcagrinac margaritifcrac Lam. testis 

 adhacrcntem, ad insulas Gallapagos (Lord IIood"s Island). 



Proceedlngs. 1834. p. 47. 



87. COPxBULA Brug. 



1. Corbula nuciformis G, B, Sowerhy. 



C. testa ovata, crassa, ventricosa, antice rotundata, 

 poslicc rostrata, oblusa; marglne ventrali valvac siulstralis 

 postice coai-ctata, transvcrsim sulcata. 



Long. 0-55 poll., lal. 035 poll., alt. 0'3 poll. 



Et fossills rcpcrla est. 



Legit 11. Cuming In America centrali (at Real Llejos — 

 foss: near Guayaquil). 



Proceedings. 183.3. p. 35. 



2. Corbula bicarinata G. U. Sotverhy. 



C. tcsla ovata, deprcssiuscula, subacquilaterali, antice 



