MUSEUM OF COMPARATIVE ZOOLOGY. 329 



fms., sand, bottom tpmiieraturc 78°.2, U. S. Fish Commission. ?Gulf of 

 St. Lawrence (fidi' Jcllrcys). West coast of Central America, Sowerljy. 



This species wlien in line condition sometimes shows a i)ule yellow spiral 

 line or two, on tlie hist whorl, but it is usually white or translucent. 



The other species of the subgenus known from our southern coast are 

 E. (L.) Hemphill'd Dall, from th« Florida Keys, and E. (L.) bilineata Alder 

 (184vS, + fulvocincta C. B. Adams, 1850), which extends from Jamaica and 

 St. l)omin<{() to Florida, North Carolina, the Mediterranean, British Isles, and 

 Norway. There is also a species with brown varices and a brown peripheral 

 line, which I have only fragments insuihcient fully to characterize. 



Eulima (Leiostraca) fusus n. s. 



Plate XIX. Fig. lib. 



Shell very acute at both extremities, smooth, polished, white, without sculp- 

 ture except the trifling inequalities due to growth; whorls (tip of two or three 

 whorls gone) about ten, slightly angulated at the periphery, flattened behind, 

 anteriorly subconical; suture distinct but shallow ; aperture narrow, before and 

 behind rather acute, almost canaliculate in front; the pillar straight, slightly 

 callous; outer lip thin, simple. Lon. of shell, 13.3; of last whorl, 6.0; of 

 aperture, 3.8; max. lat. of shell, 3.0 mm. 



Habitat. Station 100, off Morro Light, Havana, Cuba, in 400 fms., bottom 

 temperature 39°. 75. Yucatan Strait, 640 fms. 



A remarkably spindle-shaped shell, with the aperture almost channelled in 

 front. 



Genus NISO Risso. 



Niso splendidula Sowerbt. 



Nlso splendidula A. Adams, Thes. Conch. NisOy p. 801, No. 4, pi. clxx. fig. 8, 1854. 

 Eulima splendidula Sowerby, P. Z. S. 1834. 



Habitat. U. S. Fish Commission Station 2619, off the coast of North Caro- 

 lina, 25 miles S. E. from Cape Fear, in 15 fms., sand. Station 2402, in 111 

 fms., mud, between the delta of the Mississippi and Cedar Keys, Florida, in 

 the Gulf of Mexico. St. Elena, west coast of Central America in 6-8 fms., 

 sandy mud, Cuming. Pliocene of Florida. 



This magnificent shell can be identified at once by the chestnut articulations 

 of the white bands behind the suture in the young, and on both sides of it in 

 the adult. It has an extremely fine brown line at the keel, and at the com- 

 pleted margin of each varix. The body color is a handsome yellow brown. 



