SuTER. — Results of Dredging in Hauraki Gulf. 257 



light-brown, shining. Spire high, turriciilate. Protoconch of a 

 Ughter colour, 1| whorls, top flattened, radially striate and on 

 the periphery with a row of elongated small nodules, ^^^l0^1s 9, 

 the second has a slightly greater diameter than the third ; sides 

 biangulate, nearly straight ; base flat, depressed round the canal. 

 Suture very distinctly impressed, margined below by a small 

 thread. Aperture subquadrate, produced into an open and 

 short canal, which is a little turned to the left and backward. 

 Outer lip sharp, but little convex, basal lip concave. Columella 

 slightly concave, the inner lip spreading as a very thin, narrow, 

 and whitish glaze over it. 



Altitude, 8 mm. ; diameter, 3 mm. 



Type to be presented to the Colonial Museum. 



One specimen was fouiid, and I do not think it is adidt. 

 Our other species, C. sarissa, Murd., is smaller and more subu- 

 late, it has three spiral threads, and the nodules are less pro- 

 minent. 



31. Rissoa impressa, Hutton. 



Trans. N.Z. Inst., vol. xvii, 1885, p. 321 ; PHoc. Moll, of N.Z., 



1893, pi. 8, fig. 64. 



One specimen. This species was hitherto only known as 

 fossil from the Pliocene. 



32. Rissoina parvilirata, )i. sp. Plate IX, fig. 5. 



Shell small, oblong, imperforate, white, microscopically 

 spirally hTate, base subtruncate. The sculpture consists of 

 close fine spiral grooves, visible only under a lens, the inter- 

 spaces being broader. Colour pure - white, shining. Spire 

 conical, a little higher than the aperture. Protoconch minute, 

 smooth, wnth. globular apex. Whorls 4, the last large, occupy- 

 ing three-fourths of the whole length, slightly flattened below the 

 sutuie, slightly convex. Suture superficial, submargined above. 

 Aperture vertical, pyriform, truncated at the base. Outer lip 

 strong, descending nearly straight, then turning at a narrowly 

 rounded angle toward the almost straight basal lip. Columella 

 concave and truncated below. Inner lip formi)ig a strong but 

 narrow callus on the body-whorl, broadening above, where it 

 joins the outer lip ; on the columella it is much narrower, cover- 

 ing only the inner half of it. 



Altitude, 3 mm. ; diameter, 1-5 mm. 



Type to be presented to the Colonial Museum. 



Onlv a few specimens were amongst the dredgings. It is a 

 very well characterized species. It has also been obtained off 

 Otago Heads, and in sand at Narrow Neck, Devonport. 



9— Trans. 



