224 BULLETIN OF THE 



Family LIMIDiE. 



Genus LIMA BRUGifeEE. 



Lima squamosa Lamarck. 



Lima squamosa Lam., An. s. Vert., VI. p. 156. Sowerby, Thes. Conchyl., I. p. 84, 



pi. xxi. figs. 1, 18. 



Young specimens, in the condition called L. carihhcea by D'Orbigny, were 

 dred;.,'ed in 80 I'nis. off Havana; in 100 fms. at Barbados; at Station 210, near 

 Martinique, in 191 I'nis. ; and in 640 fms., Yucatan Strait ; all single valves ; 

 one living specimen at Station 292, in 56 fms., sand, off Barbados, bottom 

 temperature 74°. 5 F. It has been found in Florida by Hemphill, and is 

 widely dispersed over the world. 



Lima tenera Sowerbt. 

 Lima tenera Sby., Thes. Conchyl., I. p. 84, pi. xxi. figs. 2, 3, 10, 11, 12, 1846. 



Obtained by Sigsbee in 80 and 127 fms. off Havana; at Station 21, in 287 

 fms. ; and at Barbados in 100 fms.; all the specimens being separate valves. 



A variety which may talce the name of planulata was obtained at the last- 

 mentioned station. It is distinguished from the ordinary varieties by being 

 more elongated and compressed, Ijy finer and smoother sculpture, which wants 

 the little spurs or spines on the radiating ribs, which are flattened and sepa- 

 rated by narrow dee])ly punctate channels. In full-grown specimens the 

 inner basal margin i.s smooth and thickened all round, wliile the margin of 

 the gape is pouting and more marked than in the type. This variety is flatter 

 than any form of Lima which has been figuretl, and at first was naturally sup- 

 posed to be a distinct species. There seem, however, to be intermediate speci- 

 mens, and I think it is quite certainly an extreme form of L. tenera. 



Lima inflata Lamarck. 



Lima inflata Lam., An. s. Vert., VI. p. 156. 



Lima fasciata Sowerby, Thes. Conchyl., I. p. 85, pi. xxi. figs. 16, 17 ; not Ostrea 

 fasciata Linnc. 



Valves of this species were dredged on the west coast of Florida in 19 fms., 

 and off Sand Key in 128 fms. Fine specimens have been obtained by Hemp- 

 hill at Cedar Keys and Key West on the reefs, and it extends along the 

 Atlantic coast northward nearly or quite to Cape Hatteras. 



