246 Catalogue of Species of Lucina 



bi- vel tri-furcatis. Long. 18.8 millim. ; alt. 13 millim. ; lat. 10 

 millim. 



It must also resemble L. obliqua Reeve, said to have been 

 collected by Benson at Chusan. But in that shell, the concen- 

 tric and radiant lines are described in the same terms, and the 

 posterior margin is figured as broadly subtruncate. 



5a5tVat— Jamaica ; C. B. A.! It is found, rarely, among 

 collections of West Indian shells. 



1 4. Lucina pectinella Ad. Nov. sp. 



L. t. suborbiculari, margine dorsali subrecta, marginibus 

 alteris rotundatis; costis radian tibus planulatis, subapproxima- 

 tis, nonnullis angust^ bifurcati^, ad extremitates nullis; lineis 

 elevatis concentricis regularibus, costas superantibus ; striis con- 

 centricis intermediis microscopicis ; lunula conspicua, cordata, 

 subelongata ; limbo inter no a costis pectinato ; dentibus laterali- 

 bus magnis. Long. 7.8 millim. ; alt. 8.1 millim. ; lat. 2.8 millim. 



Dredged in 4 or 5 fathoms, in soft mud, in the harbor of 

 Kingston, Jamaica ; C. B. A. ! 



15. Lucina Pennsylvanica (Venus) Linn. 



Habitats of specimens in Mus. Amh. : St. Thomas ; E. Hart. 

 wig ! : also Krebs ! W. Indies ; S. Hovey ! Jamaica ; C. B. A. I 

 Yucatan; Largilliert. 



16. Lucina pilula Ad. Nov. sp. 



L. t. LucincB divaricatoe affini ; sed minore, crassiore, globos^ ; 

 apicibus prominentibus, haud obliquis; lunula parva, subde. 

 pressa, subcordata; striis divaricatis crebris, radian tibus micro- 

 scopicis, evanescentibus ; limbo crenulato. Long. 10.7 millim. ; 

 alt. 9.9 millim. ; lat. 7.3 millim. 



The lunule is not elongate as in L. Americana, and the mar- 

 ginal crenulations are stronger, and the depressions between 

 them are prolonged into the interior. 



Habitat. — We have received 2 specimens from M. Ejrebs as 

 West Indian shells. 



