876 PROCEEDINGS OF THE NATIOJ^AL MUSEUM. vol. xxvi. 



ANOMALOCARDIA CUNEIMERIS Conrad, 1845. 



From Lake Worth, Florida, and on the .shores of the continent south 

 to Cartag-ena, Colombia. It is not yet authentically reported from the 

 islands of the West Indies. 



This is Venus J) line fi^era Gray, in Sowerby, 1853; T'^ rosfrata Sow- 

 erby, 1853, a young shell; V. Jlexuosa Chenu, 1862, l)ut not of Lin- 

 na?us, 17(57, nor Born, 1780. It is V. macrodon Reeve, in part. It 

 is smallei", more slender, and more delicate than the T'. macrodon of 

 Lamarck. 



ANOMALOCARDIA LEPTALEA Dall, 1894. 



Lagoon at Watling Island, Bahamas. Small, very thin, curiously 

 depauperate from its extraordinarily saline habitat. The inner mar- 

 gins are entire and there is no trace of radial sculpture. The colora- 

 tion is very variable. 



ANOMALOCARDIA MEMBRANULA Romer, i860 



St. Thomas, West Indies; Romer. 



Elongate like A. leptalea, but with numerous (23) concentric lamel- 

 lae, obsolete posteriorly, and of a ferruginous brown, with white 

 specks; the inner margin crenulated. Perhaps a variety of the next 

 species. 



ANOMALOCARDIA PUELLA Pfeiffer, 1846. 



Punta do Maya, Matanzas Bay, Cuba. 



Small, whitish, with radiating brown liecks between concentric 

 lamelhe; intei-nally reddish brown. The lamella are persistent and 

 about 13 in number, in a shell 11 mm. long. The inner margin is 

 crenulated. Venus aiiberiana Orl^igny, 1853, is probably identical. 



VENUS MERCENARIA Linnaeufe, 1758. 



Living from Bay of Chaleurs, Gulf of St. Lawn-ence, and at Sable 

 Island, southward, locally, to Cape Cod, and thence generally south- 

 ward to the Florida Keys, westward to the Mississippi Delta, and, 

 sparsely, on the coast of Texas as far west as Corpus Christi Bay. 

 Fossil from the early Miocene to recent times. 



This is the Venus onercenarid of Spengler, 1785, and sul)sequent 

 authors; the V. merctrix Bolten, 1798, not of LinnaHis, L758; Mer- 

 cenaria vlolacea Schumacher, 1817; M. cancelhiia Gabl), 1S()(); M. 

 antiquaN^,xx'\S\.^V^'~ih\ and Crcissivemis mercenaTi(tV^YV\xy&^ 1869. 



VENUS MERCENARIA var. NOTATA Say, 1822. 



New England to Georgia. 



This form is marked by zigzag brown blotches and lines, and is des- 

 titute of the purple coloration internally. It is Venus obUqua Anton, 

 1837, and V. cyjprinoides Anton, 1839. 



