412 RENGICULA. 



R. PUSILLA Watson. PL 46, fig. 59. 



Shell minute, ovate, subelongate, pointed, spirally striate from 

 end to end, with slightly canaliculate and submarginated suture and 

 a large mouth. Sculpture : Longitudinals there are very slight 

 hair-like lines of growth. Spirals the whole shell is scored with 

 strongish deepish distant furrows, which are rather more remote 

 above than below the periphery ; the first one below the suture is a 

 little stronger than the others. Color glossy translucent white. 

 Spire rather high, conical, regular, scalar. Apex small, rounded, the 

 small tip being a very little prominent. Whorls 5, subcylindrical, 

 slightly convex, the penultimate is rather high. Suture canaliculate 

 and submarginated. Mouth large the teeth being small, suboblique. 

 Outer lip somewhat obliquely drawn in and produced on the base, 

 where it is round, patulous, and slightly sinuated ; about the 

 middle it is prominent and toothed ; above it is narrowly and 

 shallowly sinuated close to the body. Inner lip rather thinly and 

 narrowly thickened, with a small tooth in the middle ; two pillar- 

 teeth are oblique, parallel, and nearly equal, the lower being the 

 larger. Alt. (V067 in. breadth 0'038. Mouth height 0'034, breadth 

 0-027 inch. (Wats.}. 



Flinders' Passage and Wednesday Island, Torres Straits, 3-8 fms. 



E.pusilla WATS., J. L. Soc. Lond. xvii, p. 290; Chall. Rep. 

 Gastr. p. 635, pi. 47, f. 9. 



This species resembles Ringicula goujoni De Folin, more than any 

 I know, but the shell is shorter here, with a lower spire and a less 

 exserted tip. The suture in that species is very much less canalic- 

 ulate, the mouth is smaller, and the spirals are much less numerous 

 and are more remote. 



R. ASSULARUM Watson. PI. 46, fig. 60; 



Shell small, somewhat lozenge-shaped, the left slope of the spire 

 and the right base, the right slope of the spire and the left base 

 being roughly parallel, smooth and without spiral furrows, with an 

 obtuse spire, a small but blunt apex, and a mouth much contracted 

 by the callus of the lips. Sculpture : Longitudinals there are very 

 slight rounded lines of growth. Spirals none, except <>ne feeble 

 furrow toward the front of the base. Color glossy white, with a 

 faint bluish tinge. Spire short, conical, very slightly subscalar. 

 Apex very small, rounded, prominent, and a little elevated on one 



