86 BULLETIN OF THE 



Drillia eucosmia n. 8. 



Plate XIII. Fig. 1. 



Shell pale, with touches of pale brown and a peripheral whitish zone, eight- 

 whorled, with a glossy, rounded nucleus of two whorls ; fasciole rather wide, 

 excavated, undulating in harmony with the ribs, marked by fine revolving 

 threads and marginated at the appressed suture by a stout elevated line ; 

 spiral sculpture on the rest of the shell (1) of (on the whorls preceding the 

 last) two or three prominent white stout threads, somewhat swollen where 

 they ride over the ribs ; on the last whorl there are about fifteen of these 

 primary spirals ; between the fasciole and the end of the canal, in each of the 

 wide interspaces, are (2) three or four much finer hardly elevated flattish 

 threads, similar to those on the fasciole, and on the last whorl the marginating 

 thread behind the fasciole is wider and somewhat crenulated ; transverse sculp- 

 ture of (on the penultimate whorl 9) stout, rounded ribs, beginning at the fas- 

 ciole and obsolete on the canal ; beside these there are only incremental lines ; 

 the brown touches are on these ribs above and below the white zone, which 

 is bounded by the peripheral pair of primary spirals ; final varix stout and 

 rounded ; aperture narrow, notch rounded, strongly marked ; outer lip thin, 

 arched forward, not lirate within; a single internal thread runs parallel with 

 the fasciole deeper in the throat ; inner lip w r ith a thin callus with elevated 

 margin; pillar straight, canal short, obliquely truncate, rather wide. Max. lat. 

 of shell, 6.4; Ion. of shell, 19.0; of last whorl, 10.3; of aperture, 7.7 mm. 



Hahitat. Station 2-47, near Grenada, in 170 fms., ooze, temperature 53°.5 F. 



Drillia eucosmia var. canna Dall. 



Shell smaller, more slender ; the peripheral primary spirals always three ; 

 the secondary spirals few or obsolete ; ribs six or seven, rather more prominent. 

 Lon. of shell, 15.25; lat. of shell, 6.0 mm. 



Habitat. With the last. Also west of Florida, in 50 fms., Gulf of Mexico ; 

 and off Cape Lookout, N. C, in 52 fms., sand, at Station 2612, by the U. S. 

 Fish Commission. 



This very elegant little species belongs to a group of several, which possess 

 characters in common, and which appear to be undescribed. 



Drillia haliostrephis n. s. 



Plate XIII. fig. 3. 



Shell pure white, eight-whorled, with a glossy rounded vitreous nucleus 

 of two whorls ; spiral sculpture much as in D. eucosmia, a line marginating the 

 suture ; two or three strong primaries on the upper whorls, five or six on the 

 body whorl, and eight or ten smaller ones on the canal ; the principal pri- 



