260 PROCEEDINGS OF THE MALA.COI,OGICAL SOCIETY. 



Endodonta (Pttchodon) Chiltoni, n.sp. PL XT, Fig. 21. 



Shell minute, sub-discoidal, umbilicated, very finely radially ribbed, 

 thin and fragile, not shining. Sculpture of the post-nuclear whorls 

 consisting of very fine, close, nearly straight radial riblets, about 

 twenty-five per millim., the interstices with minute growth-lines. 

 Colour yellowish-white, radially streaked with rufous. Spire very 

 low, broadly convex. Protoconch of If smooth and convex whorls. 

 Whorls 5, very slowly increasing, flatly convex ; periphery and base 

 rounded. Suture deep. Aperture slightly oblique, rotundly lunate 

 within, with eleven slender, elongated, and low lamellae : one on the 

 parietal wall above the middle, one on the columellar lip, and nine on 

 the outer wall. Peristome thin, sharp, straight, regularly arched. 

 Columella very short, arcuate. Umbilicus wide, deep, perspective, 

 about one-third of the greatest diameter. Diam. maj. 1-6, min, 1-4 ; 

 height "9 mm. 



Hah. — Kowai Bush, Canterbury (Professor Chilton). Named in 

 honour of Professor Chas. Chilton, D.Sc, the discoverer of the unique 

 specimen. Type in my collection. 



Endodonta (Chaeopa) GAZA, n.sp. PL XI, Fig. 22. 



Shell small, depressed, broadly umbilicated, radially closely costate, 

 and spirally very distinctly lirate. Sculpture of the post-nuclear whorls 

 consisting of equidistant, close, flexuous, rather low radial riblets, 

 about eight to nine per millim., the interstices with numerous micro- 

 scopic growth-lines, crossed by equidistant, narrow, rounded spiral 

 lirse, separated by well-impressed linear grooves. Colour fulvous, 

 sometimes with a few radial whitish streaks. Epidermis thin, horny, 

 not shining. Spire low, broadly conoidal; in some examples, however, 

 nearly flat. Protoconch oi 1^ smooth, convex whorls, flat. Whorls 5|-, 

 rather slowly increasing, convex, the last flat above the periphery ; 

 base rounded. Suture deep. Aperture oblique, sub-triangular, angled 

 above, broadly rounded below. Peristome sharp, the outer lip very 

 slightly advancing and straight above the periphery, sharply rounded 

 on meeting the broadly convex basal lip. Columella short, arcuate ; 

 inner lip lightly callous, but little reflexed above, and spreading as 

 a white smooth callus over the convex parietal wall. Umbilicus wide, 

 perspective, its diameter 1*7 mm. Diam. maj. 4-5, min. 4; height 

 2 mm. 



Sah. — Big Eing, Three Kings Islands (Captain J. Bollons). The 

 prominent spiral sculpture places this species near E. egesta, Gray, 

 and E. transenna, Sut. Type in my collection. 



Endodonta (Chaeopa) Keneptjeuensis, n.sp. PL XI, Fig. 23. 



Shell very small, sub-discoidal, moderately umbilicated, radially 

 finely ribbed, thin and fragile. Sculpture of protoconch consisting of 

 about eight fine, somewhat inequidistant spiral lirae ; the succeeding 

 whorls have fine, not very close, flexuous radial riblets, about twelve 

 to thirteen per millim., the interspaces microscopically finely reticulated 

 by growth- lines and spiral striae, the latter being much finer and closer 

 together than on the protoconch. Colour white, with a few distant 



