REPORT ON THE GASTEROPODA- 483 



Wliorls 7 (besides those of the embryo), the last alone is long ; each at the bottom con- 

 tracts slightly into the suture ; the base is attenuated and rounded. Suture slightly im- 

 pressed, very oblique. Mouth small, oblique, narrow and pointed above, broad and rounded 

 below. Outer lip slightly disjoined from the body, straight, rounded and patulous in 

 front. Inner lip oblique, thick, continuous, defined, and slightly disjoined from the body, 

 angulated at the point of the pillar. A strong blunt fold twists obliquely round the base 

 of the pillar ; a small shallow furrow above the lip-edge runs across the body. H. 0'123 in. 

 B. 0-037. Mouth, height 0*034, breadth 0'022. 



Some of the specimens of this species are shorter and narrower than others. 



6. Odostomia hyphala, 1 n. sp. (PL XXXI. fig. 2). 



Station 169. July 10, 1874. Lat. 37° 34' S., long. 179° 22' E. North-east from 

 New Zealand. 700 fathoms. Blue mud. Bottom temperature 40°. 



Shell. — Strongish, oblong, broadly conical, very slightly scalar and subumbilicate, white, 

 with a small upturned but not sinistral tip, flat-sided conical whorls, a slightly impressed 

 suture, a rounded shortly produced base, and a largish oblong almost direct mouth. Sculp- 

 ture: none but flexuous strongish unequal lines of growth. Colour translucent white, 

 with a rather dull surface. Spire conical, broad. Apex eroded, but apparently contract- 

 ing rather suddenly to a small tip, which is slightly turned over on one side. Whorls 

 7, of rapid but regular increase ; they are broad but not high ; each has a slight contraction 

 at the bottom, and above this is faintly convex and then flat-sided ; at the top of the 

 shell they project very slightly and sharply out of the suture ; the last is round, with a 

 shortly produced base. Suture strongish from the contraction of the whorl above it and 

 the slight projection of the whorl below. Mouth rather large, oblong, pointed above and 

 at the front of the pillar. Outer lip thin (somewhat broken) ; it is patulous on the base, 

 and slightly guttered at the point of the pillar. Inner lip a mere gloss on the body, from 

 which it runs on continuously into the pillar concealing the umbilicus ; here it is very 

 thin, patulous, and curved ; the tooth is very slight, is oblique, lies deep within the mouth 

 and close to the top of the pillar. H. 0-25 in. B. 0117. Mouth, height O'l, breadth 0-068. 



This species is a good deal like a very full-grown Odostomia japonica, A. Ad., but, besides greater 

 number of whorls, and such differences as fuller development might explain, the whorls here are less 

 rounded, the suture shallower and more oblique, and the spire is much less scalar. It very much 

 resembles Odostomia polita, Biv. pater, from the Mediterranean, but is a thinner shell, more tumid, with 

 a much larger mouth and a toothless outer lip. 



1 i/<£a>.or, from under the sea. 



