396 



NEW MARINE MO'IjLUSCA. 



CK\GULINA INSIGNIS, N.S. (PL. XV., FIGS. 

 24 and 24a.) 



Shell very long, narrow, subulate, smooth, glassy,, 

 white, clouded with yellowish brown; whorls flattened; 15, 

 in number, including a brown coloured protoconch of 

 three rounded whorls, the last narrowing to an upright 

 point, which is ver}' remarkable and characteristic; sutures 

 well impressed; aperture subquadrate, with a strongly re- 

 curved, short, open canal; outer lip simple, very thin, 

 dentated by the sculpture; columella deeply arched above, 

 strongly convex below. Sculpture ; Each adult whorl is 

 divided by two narrow scjuare-shaped grooves into three 

 nearly equal flattened divisions; there is a third groove 

 on the body whorl corresponding to the sutures; fine 

 raised growth lines are visible in the lower grooves. 



Length, 11.5 m.m.; breadth, 2.8 m.m. 



Locality; Type from 40 fathoms three miles east of 

 Schouten Island, with 20 others; also from 100 fathom.s 

 seven miles east of Cape Pillar several examples. 



A very distinct species, with a remarkable apex. It 

 seems a fairly common shell on our continental shelf. 



TURBONILLA TIARA, N.S. (PL. XV., FIGS. 25, 

 25a, 25b). 



Shell long, narrow, solid, yellowish, stained with 

 purple; whorls 15, rounded; the apical portion is very re- 

 markable, suggesting a turban or crown; the last turn is 

 central, and very small, but the adult sculpture continues 

 right over it. There are on the upper whorls about 10 

 and on the lower 12 strong, straight, rounded ribs, which 

 follow each other regularly up the spire from suture to 

 suture; they are parted by deep furrows of about equal 

 width. The third whorl from the summit is partly smooth 

 and inflated, but a cotype shows no sign of this. I have 

 given a figure of the upper part of both type and cotype 

 to show the diiiference. The ribs cease abruptly below the 

 periphery of the body whorl, where there is a small keel; 

 another keel encircles the centre of the base, which is 

 sm.ooth, and chestnut in colour; on the centre of the spire 

 whorls is a small obscure spiral ridge, crossing' the inter- 

 spaces, but not seen on the ribs; aperture subquadrate; 

 outer lip curved, varixcd, bending back to form a distinct 

 canal; inner lip concavely arched above, convex below. 



