196 A. E. Verrill — Jfollusca of the Nkw England Coast. 



Odostomia tornata Temii, sp. nov. 



Sliell small, conical, consisting of about six whorls, which are flat- 

 tened and taper regularly to a very acute apex. Each whorl is sur- 

 rounded by two very strongly marked, broad, revolving grooves, 

 with nearly perpendicular edges; one of these is situated just above 

 the suture ; the other, which is somewhat broader, surrounds the 

 middle of the whorl ; the two are separated by a raised, flattened 

 revolving band, about as wide as the grooves ; a similar but some- 

 what wider raised band intervenes between the upper groove and the 

 suture, which is not impressed and not very distinct, as it lies at the 

 edge of the groove. The apical whorl is very minute and upturned. 



The base of the shell is somewhat produced and nearly smooth. 

 Aperture irregularly ovate, acute above, broadly rounded and flar- 

 ing anteriorly. The outer lip is flattened laterally and a little pro- 

 duced and eflTuse anteriorly, forming a rounded angle where it joins 

 the columella, which has a somewhat reflexed, nearly straight, outer 

 margin. The inner lip has a strong, prominent, acute tooth or fold 

 at the junction of the columella with the body-whorl. There is a 

 narrow umbilical chink, somewhat concealed by the everted margin 

 of the columella. 



Length, 3'"™ ; breadth, 1-5'""'; length of aperture, 1™"'. 



Station 2109, in 142 fathoms, off Cape Hatteras, 1883. One speci- 

 men. 



This species is remarkable for the size and depth of the two 

 revolving furrows. 



Odostomia disparilis Yeniii, sp. nov. 



Shell elongated, slender, regularly tapering to an acute tip. 

 Whorls about seven, moderately convex, or a little flattened in the 

 middle. The whorls of the spire with both longitudiiuxl libs and 

 revolving lines, while the last whorl is nearly smooth, having only 

 very faint revolving lines. 



Suture conspicuous, decidedly impressed. On the lower whorls 

 of the spire the ribs are prominent, thick, and obtuse, about ioiirteen 

 to sixteen in number, separated by intervals narrower than tliiir own 

 bi-eadtli, and running neai'ly straight across the breadth of the whorl ; 

 the narrow and deep interstices are crossed by numerous fini' revolv- 

 ing lines, which are not distinct on the ribs. On the last whorl faint 

 indications of ribs occasionally a])pear as subsutural crenulations, 

 disappearing a short distance below the suture. -Aperture rather 



