106 BULLETIN OF THE 



glassy, the subsequent turns translucent, smooth, or with oblique transverse 

 sculpture which almost imperceptibly passes into the ribbing of the adult ; in 

 all there are seven whorls including the nucleus ; the early ones are rounded, 

 and soon take on an angulation just in front of the fasciole ; spiral sculpture 

 of three or four fine threads on the fasciole, and three or four stronger threads 

 between the fasciole and the suture in front ; on the last whorl there are 

 fifteen or twenty of these between the shoulder of the whorl and the front end 

 of the canal ; they are not perfectly uniform in size, and between them are 

 frequently much finer lines ; these cross about (on the last whorl) fifteen 

 transverse rounded riblets, which extend from near the suture forward to the 

 canal ; the last whorl is rather compressed ; the aperture elongated and nar- 

 row ; the outer lip angulated at the shoulder, with a broad shallow rounded 

 anal notch, thin edge, and smooth interior; inner lip nearly straight, anteriorly 

 a little oblique, canal short, hardly differentiated, not recurved. Lon. of shell, 

 4.75 ; of last whorl, 3.25 ; lat. of shell, 2.0 mm. 



Habitat. Twelve miles east of Frying Pan Shoals, in 12 fms., Dr. Rush. 

 U. S. Fish Commission, at Stations 2608, 2610, 2616, and 2619, in 15-22 fms., 

 sand, off the coast of North Carolina, bottom temperature 78°. 5 F. 



This pretty little shell may be a Mangilia, but its form seems more like that 

 of a Daphnella; conch ologically it is intermediate between the two. It is re- 

 lated to the group containing such forms as M. cerina and AI. citronella, and to 

 many of the forms from the tropics included by Tryon in Daphnella, 



Section EUBELA Dall. 

 Daphnella limacina Dall. 



Plate IX. Fig. 10. 



Pleurotoma {Beta) limacina Dall, Bull. M. C. Z., IX. p. 65, August 12, 1881. 



Daphnella limacina Dall, op. cit., p. 102, Oct. 31, 1881. 



Pleurotoma [Defrancia) hormophora Watson, Linn. Soc. Journ., XV. p. 457, Nov. 3, 



1881. 

 Clathurella hormophora Watson, Chall. Gastr., p. 351, pi. xxi. fig. 9, 1885. 

 Daphnella limacina Verrill, Trans. Conn. Acad., V. p. 452, 1882; VI. p. 265, 1884. 



Habitat. Station 2, 805 fms.. Gulf of Mexico ; Yucatan Strait, 640 fms. ; 

 bed of the Gulf Stream, in 447 fms. ; Station 136, near Santa Cruz, in 508 fms., 

 ooze, bottom temperature 42°. 5 F. U. S. Fish Commission Station 994, in 

 368 fms., off Martha's Vineyard ; and Station 2646, in 85 fms., sand, off Cape 

 Florida. Challenger Expedition Stations 23 and 24, off Sombrero and Culebra 

 Islands, West Indies, in 390-450 fms., pteropod ooze; and Station 122, off 

 Pernambuco, Brazil, in 350 fms., red mud. 



This lovely little shell has a well-marked Sinusigera nucleus, which is figured 

 by Watson, but it is often more depressed than in the specimen he figures, 

 especially at the vertex. 



