189 



4. Pectuiiculiis multicostatus G. B, So- 



tverhi/. 



P. testa suborblculari , alba, castaneo rubiginoso cine- 

 reoque variegala; costellis uumerosis, ex umboue radiauti- 

 bus, transversim strialis. 



Long. 1-5 poll., lat. 1-2 poll., alt. 1-5 poll. 



Legit n. Cuming in America meridionali (Island of 

 Muerte, in tlie Bay of Guayaquil). 



Proceedings. 1832. p. 195. 



5. Pectunculus inaequalis G. B.Sowerhy. 



P. tesla subcordiformi , obliqua, inaequilaterali, alti- 

 tudine longiludinem superante, gibbosa, obtuse radiatim 

 striata, striis per fasciculos costiformes congestis, intersti- 

 tiis striatis. 



Long. 1"5 poll., lat. 1-15 poll., alt. 1*6 poll. 



Legit H. Cuming ad Panamam et Real Llejos. 



Proceedings. 1832. j). 196. 



6. Pectunculus assimilis (m. B. Sowerhy. 



P. tcsta subcordlformi , obliqua, inaequllalcrall, altiore 

 quam longa, subgibbosa, radialim sulcala et strlata, strlis 

 per fasciculos costlformes congestis, interstitiis latiusculis, 

 laevibus. 



Long. 13 poll., lat. 1 poll., alt. 1*5 poll. 



Legit IL Cuming in America centrali ct meridionali. 

 (At Puerto Portero and in the Bay of GuayaquII.) 



Proceedings. 1832. p. 196. 



7. Pectunculus tessellatus 6r. J?. Soiferft^. 



P. testa orbiculari, subglobosa, alba, castanco-tcsscllata 

 et varlegata; coslis rotundatis, subdistantibus, radlantlbus. 



Long. 0-9 poll., lat. 0-7 poll., alt. 1 poll. 



Legit II. Cuming ad littora Columbiac occidentalis (at 

 Monle Christc aud in the Bay of Xipixapl). 



Procccdings. 1S32. p. 196. 



8. Pectunculus strigilatus G. B. Soiverhy. 



P. testa orbiculari, subventricosa, albida, roseo-tincta 



