A. E. Verrill — 3follicsca of the Neio England Coast. 423 



just below the suture. Tlie upper whorls are also crossed by numer- 

 ous, regular, nearly straight, narrow, longitudinal ribs which, with 

 the revolving lines, produce a cancellated structure and at the 

 shoulder they rise into small, rounded nodules, and form another 

 row of smaller nodules in crossing the subsutural line. On the lower 

 whorls the ribs disappear or become indistinguishable from the lines 

 of growth which cover the whole surface. The aperture is narrow- 

 elliptical ; the outer lip is regularly arched, except at the shoulder, 

 where it is slightly angulated ; the columella is excurved and has a 

 distinct, oblique spiral fold at about the middle; the canal is very short, 

 broad and open, without any constriction. The shell is translucent 

 bluish white internally. The epidermis is pale, yellowish green, thin, 

 firm and close, a little roughened by the fine lines of growth. The 

 operculum is well-developed, but smaller than the aperture, elongated 

 and irregularly ovate, nearly straight on the outer margin, convex on 

 the inner, bluntly rounded posteriorly, terminating anteriorly in a 

 narrow point, which is slightly falcate, but not spiral ; color yellowish 

 green. 



Length of the shell (consisting of only the five lower whorls), 

 41'"'" ; the eroded apical whorls may have been 4 or 5'"'" additional ; 

 greatest breadth, 37'"'^; length of body-whorl in front, 20"°"'; length 

 of aperture, 22'^'"; its breadth, S'S""" ; length of operculum, 13'"'"; 

 breadth, 6'"'". 



A single living specimen was taken at station 2224, in 2,574 fath- 

 oms, K lat. 36" 16' 30", W. long. 68° 21' 00". (No. 44,647.) 



This species appears to be related to J. Ossian-Sarsii Friele. It 

 is at least probably congeneric with the latter, but is a much more 

 slender and delicate shell and quite different in its sculpture and 

 form. 



Omalaxis nobiliS Verrill, sp. nov. 



Plate' XLIV, figues 12. 



Shell strong, coiled closely in a flat spire, which is nearly plain on 

 the upper or right hand surface and strongly concave on the left or 

 base. The shell consists of five visible whorls, the apical whorl being 

 small and concealed by the succeeding one. The whorls are strongly 

 angulated, nearly quadrangular, with two strong, prominent, rounded 

 carinfe at the periphery, one at each angle, the upper one somewhat 

 more prominent than the other. The surface of the periphery, be- 

 tween these carinffi, is concave and sculptured by several small, spi- 

 ral ribs, one of which, next the upper carina, is double, while two or 



Trans, Conn. Acad., Vol. VI, 53 April, 1885, 



