Drill/a.] GASTROPODA. 475 



colour. Spire high, turriculate, sharply pointed, but little higher 

 than the aperture with canal. Protoconch of 2 convex whorls, the 

 second finely spirally striate. Whorls 8|, with a slightly excavated 

 shoulder, flatly rounded below, base somewhat contracted. Suture 

 impressed, bimarginate. Aperture elongated, subchannelled above, 

 produced below into a subelongated narrow channel, slightly re- 

 curved and turned to the left, base but faintly sinuated. Outer lip 

 convex, lightly contracted below, with a moderate sinus situated in 

 the excavation. ( 'olumella straight, turned to the left below. Inner 

 Up thin and narrow, spreading over the lightly concave parietal wall. 

 Operculum not seen. 



Diameter, 6-5 mm. ; height, 21 mm. (type) : angle of spire, 29. 

 Diameter, 2-8 mm. ; height. 7 mm. (specimen from Flat Point). 



Animal unknown. 



Type in the British Museum. 



Hab. -- Throughout New Zealand: Auckland Harbour; near 

 Channel Island, Hauraki Gulf, in 25 fathoms ; off Great Barrier 

 Island, in 110 fathoms; Flat Point, east coast of North Island, in 

 75 fathoms ; dredged off Otago Heads (A. Hamilton) ; Foveaux 

 Strait, in 15 fathoms ; near Cuvier Island, in 38 fathoms (Captain 

 Bollons). 



Remarks. The size of the shell is extremely variable, as may be 

 guessed from the measurements of extreme forms indicated. The 

 sculpture also shows a great deal of variability ; the axial costse are 

 sometimes very faint, but often strong, especially in specimens from 

 the south ; the spiral lira j are varying in number and strength. Ex- 

 amples from deep water are usually white or yellowish-w r hite ; fresh 

 shells, how r ever, may be of a darker colour. 



2. Drillia chordata, Suter, 1908. Plate 21, figs. 5, 5o. 

 Drillia chordata, Suter, P. Mai. S., viii, 1908, 184, pi. 7, f. 16. 



Shell small, fusiform, fairly solid, whitish, suture strongly mar- 

 gined, whorls angulated by a row of large nodules, spire high, anal 

 sinus moderately deep. Sculpture consisting of a row of large oval 

 nodules on the middle of the whorls, about H on a whorl, those on 

 the last two whorls somewhat stretched out towards the suture belo\v, 

 and incised in the middle by a spiral linear groove ; a very strong 

 spiral cord margins the suture below, and a fine thread above ; the 

 latter is continued as a rather strong cord on the body-whorl, and is 

 succeeded below by a similar cord ; the base of the body-whorl is 

 adorned with fine spiral threads, close together upon the beak ; the 

 whole sculpture crossed by very fine, strongly flexuous, and oblique 

 growth-lines. Colour whitish. Spire high, conic, somewhat less than 

 twice the height of the apertiire. Protoconch of 2 whorls, which are 

 microscopically spirally striate, the nucleus oblique, rounded, the 



