Murdoch. — On Neiv Species of Pliocene Mollusca. 217 



Trophon (Kalydon) huttonii, n. sp. Plate XX., fig. 1, 



Shell small, fusiform ; whorls 8|-, protoconch one and a 

 half whorls, smooth, the others spirally and longitudinally 

 ribbed, the longitudinal ribs rounded, somewhat nodular, 

 eleven on a whorl ; the spire whorls with five or six and 

 the body with thirteen or fourteen spiral ribs, the grooves 

 about the same width as the ribs, with the exception of a 

 single wide groove which encircles the spii'e-whorls a little 

 above the sutures, and the body-whorl close above the aper- 

 ture ; the rib forming the lower margin to this wider space is 

 grooved on its surface ; the whorls are finely sculptured with 

 transverse thin laminae, which cross both grooves and ribs 

 (this is well preserved in some examples, and has almost 

 disappeared in others). Sutures with a marginal rib, indis- 

 tinct in some examples; aperture broadly ovate, outer lip 

 somewhat expanded and with several small denticles a little 

 within the margin ; columella straight and rounded, anterior 

 canal short, curved to the left, posterior canal shallow and 

 indistinct. Length, 16 mm. ; breadth, 6-2 mm. 



Type, Wanganui Museum. 



Locality. — Shakespeare Cliff, Wanganui. 



This beautiful little shell seems quite distinct from any 

 Nevv^ Zealand species. The wide groove encircling each whorl 

 is a characteristic feature by which it may be readily dis- 

 tinguished. The species I venture to name after Captain 

 F. W. Hutton, as a small token of appreciation for his 

 invariable kindly assistance. 



Pleurotoma gemmea, n. sp. Plate XX., fig. 9. 



Shell small, fusiform ; whorls 6^^, strongly angled, proto- 

 conch one and a half whorl^, polished, the others with 

 eighteen to twenty small nodules on the angle (these are 

 slightly produced below the angle, and have somewhat the 

 appearance of very short riblets) ; whorls obliquely longi- 

 tudinally striated, and with fine spiral lines ; body- whorl 

 biangulate, the anterior angle slight, forming a line with the 

 insertion of the outer lip ; there are about twenty-four spirals 

 between the posterior angle and anterior end, about six of 

 which are between the aperture and angle ; the posterior of 

 these are close together and cut the nodules into minute 

 grains ; the area above the angle concave, with several 

 microscopic spiral lines and a small marginal rib close to 

 the sutures ; aperture oval, canal produced, gently curved, 

 outer lip (?) imperfect. Length, 13 mm. ; breadth, 5 mm. 



Type, Wanganui Museum. 



Locality. — Blue-clay cliffs, west of Wanganui Heads. 



This shell stands nearest to P. huchanani, Hutton, from 



