Marshall: on new British marine shells. 261 



'Shell. — High and narrow, very symmetrical, with a very 

 fine linear suture, flat-sided and very-little-oblique whorls, a 

 tapering, scarcely convex base, and a small pear-shaped mouth. 

 Sculpture — none. Colour — the specimen is dead and dis- 

 coloured [pale yellowish white]. Apex slightly broken, but 

 seemingly small [blunt, perfectly rounded]. Spire high, quite 

 straight, and with profile-lines most symmetrical. Whorls, 12 

 or 13, quite flat on the sides; the last whorl is a little long but 

 narrow, tapering very gradually, scarcely convex, and very 

 regularly rounded in front, where the lip hardly projects. 

 Suture linear, fine and hardly impressed, and very little oblique. 

 Mouth not oval, but regularly pear-shaped, and slightly oblique. 

 Outer lip quite straight in its direction; its edge is deeply sinu- 

 ated above, a little prominent in the middle, and then it retreats 

 very slightly to the shallow open gutter in front. Inner lip, a 

 thin glaze with defined edge crosses the body and runs out on 

 the short, narrow, slightly-twisted pillar, with a very minute 

 furrow behind it. [Operculum filmy, very pale yellow, with 

 micro-flexuous stric"e in the line of growth.] Height, o'33in. ; 

 breadth, o'o6in. 



'This species very much resembles E. subidata Don., but 

 is slightly slimmer in form, and the base in particular is more 

 symmetrical; the suture is less oblique; the mouth is unmistak- 

 ably different, being smaller, more drawn in towards the axis of 

 the shell, and the inner lip has no curve on the body and no 

 angulation at the junction of body and pillar, but runs quite 

 straight from the angle of the mouth to the point of the pillar.' 



Mr. Watson's figure shows 1 1 whorls, though his text gives 

 12-13, and the length as about one-third of an inch. My 

 largest specimen is exactly a quarter of an inch long, and has 

 13 whorls. They have been obtained at various times in six 

 different localities^ and a few are live shells. The following is 

 a list of these localities: — 



Aberdeen, 50 miles from land, in 56 fathoms ('Triton' 

 cruise, July, 1882). 



