MUSEUM OF COMPARATIVE ZOOLOGY. 265 



rior flexure due to the sulcations ; the hinge is veiy strong, the lateral teeth, 

 especially the anterior one, strong ; the ligament in a deep groove must be 

 entirely concealed. Lon. of shell 5.6, alt. 6.5, diam. 6.0 mm. 



Habitat. One valve from oft' Sombrero in 72 fms. ; others were collected 

 in South Florida by Henry Hemphill, and in 6 fms., living, off Turtle Harbor, 

 Bahamas, by Dr. W. H. Rush, U. S. N. 



The strong and salient characters of this small species render it recognizable 

 at once. A somewhat similarly sculptured species is found at Cape St. Lucas, 

 but that one has a very deep cavity for the lunule, projecting into the interior. 



Lucina funiculata Reeve. 

 Lucina funkulata Reeve. Dall, Bull. M. C Z., IX. p. 136, 1881. 



Habitat. Station 2, 805 fms., one valve. 



There is strong reason for doubting the distinctness of this form from L.ja- 

 maicensis. The thinner character of the shell and the more delicate sculpture 

 seem to be the differences. 



Lucina lenticula Reeve. 



Loripes icterica Dall, Bull. M. C. Z., IX. p. 135, 1881. 



Lucina lenticula Reeve, Conch. Icon. Lucina, pi. xi. fig. 67, 1850. 



Habitat. Station 21, 287 fms.; Yucatan Strait, 640 fms.; Station 36,84 

 fms., Gulf of Mexico, living, bottom temp. 60°.0 F.; Barbados, 100 fms. ; Sigs- 

 bee, off Havana, 127 fms. ; Station 220, near Santa Lucia, in 116 fms., bottom 

 temp. 58°.5 F. ; Station 264, 92 fms., near Grenada, bottom temp. 42^.5 F. 



On more careful study these detached valves seem more likely to prove a true 

 Lucina, and probably Reeve's L. lenticula, than to belong to the genus Loripes, 

 which in most characters they very much resemble. The material is too poor 

 and insufficient for a satisfactory determination, at any rate. It may be that 

 the species should properly be called L. Candeana D'Orbigny, but that is 

 referred to by Guppy as a Diplodonta. 



Lucina scabra Lamarck. 

 Lucina scabra Lamarck, Reeve, Conch. Icon. Lucina, pi. viii. fig. 45, 1850. 



Habitat. Sigsbee, off Havana, in 182 fms. 



Lucina sagrinata, n. a. 



Shell small, white, subovate, inequilateral, compressed, sculptured with 

 numerous not very close concentric moderately elevated sharp laminse, be- 



