456 Ji. J. Biish — Molhifica of Cape Hatteras. 



Suture defined by an indistinct, nndulating line. A very ^^vf promi- 

 nent, narrow, straight I'ibs (six on the body-whorl) cross the whorls 

 from suture to suture, separated by very wide, concave interspaces ; 

 a single rounded thread revolves on the ])criphery at the shoulder of 

 the whorls, scarcely visible on the interspaces, but forming con- 

 spicuous, oblong nodules on the ribs. On the body- whorl the ribs 

 continue to the end of the canal curving in from its base, towards 

 the aperture. On the ventral surface of the canal there are five or 

 six very indistinct, oblique striae. The surface is everywhere crossed 

 by conspicuous, flexuous lines of growth. Nucleus rather large, 

 composed of two and a half regularly coiled, nearly smooth, some- 

 Avhat shining whorls, the second having a row of minute nodules or 

 beads on the periphery. Aperture long, narrow, of nearly uniform 

 width ; outer lip thin, nearly straight, broadly rounded anteriorly, 

 with a decided sinus just below the suture; within the aperture, 

 underneath the first external rib, thei'e is a line of small, oblong 

 nodules. Inner lip continuous with the outer, with a thin, free edge. 

 Columella very slightly curved, with a small horizontal fold or tooth 

 about the posterior third. 



Length, 6"'"' ; breadth, 2-5""" ; length of apertpre, 3""" ; its breadth, 

 about "8""". A single dead specimen (No. 44,75G) was taken at sta- 

 tion 2269, in 48 fathoms. 



Mangilia eritima,' pp. nov. 



Shell large for the genus, composed of eight very angular whorls, 

 which form a sharp pointed, regularly tapered, turreted spire. 

 Nucleus very small, regularly coiled, consisting of two and a half 

 shining, light yellow whorls in striking contrast to the dull, 

 rough surface peculiar to the rest of the shell. The first one 

 and a half turns are perfectly smooth, while the last one is crossed 

 by minute, transverse riblets. Suture marked by a conspicu- 

 ous, rounded, undulating cingulus or thread on the preceding 

 whorl. The scidpture consists of prominent, straight, angular, 

 alternating ribs (nine on the body-whorl), forming a conspicuous 

 node at the angle, extending from suture to suture. These, with 

 their deeply concave interspaces, are crossed by unequal, conspicuous, 

 well-rounded, granulated cinguli and microscopic threads. The 

 first cingulus, defining the shoulder of the whorls, is double with the 

 upper half slightly the larger, the sutural one is the next in size, 

 while between these there are two still finer ones; these are un- 

 equally distant from each other, the first and second being much 



