58 HELTX-LAOMA. 



zigzag streaks, radiating on the base, oblique above ; the cord-like 

 keel alternately white and reddish. Surface obliquely regularly 

 striated ; shining with a golden luster. 



Spire conic, with slightly convex slopes ; apex slightly obtuse. 

 Whorls 6, flat, the carina projecting cord-like alon^ the sutures ; 

 last whorl somewhat concave above and below the peripheral keel ; 

 base convex. 



Aperture somewhat oblique, rhombic ; columella thickened within 

 and bearing a strong spiral fold ;. parietal wall bearing one or two 

 strong entering folds, outer lip having one fold above the periphery 

 and from one to three upon the base. Lip sharp, dark-edged ; sim- 

 ple except at the columella, where it is expanded. 



Alt. 2-3, diam. 3'5 mill. 



North Island of New Zealand at Forty-mile Bush, Mt. Welling- 

 ton and Remuera, near Auckland. 



Endodonta marina HUTTON, Trans. N. Z. Inst. xvi, p. 196. 

 Laoma marina SUTER, 1. c. xxiv, p. 283, 298, t. 23, f. 41, 42 (jaw 

 and dentition). E. nerissa HUTTON, op. cit., p. 196 ; cf. Suter, op. 

 cit. p. 283. 



Suter has shown that the number of teeth developed varies from 

 three to seven, Button's L. nerissa being founded upon specimens 

 with the last number (fig. 18.) 



This species has the contour and coloring of L. pwcilosticta Pfr., 

 but in the teeth it resembles L. leimonias. 



L. CONELLA Pfr. PI. 23, fig. 16. 



Shell very narrowly perforated, depressed-turbinate, distinctly 

 angled at the circumference, about equally convex above and 

 below the keel ; thin, somewhat translucent, horny with close irreg- 

 ular stripes of tawny-brown, which radiate below, and descend 

 obliquely forward above. Surface smooth, having a dull silky 

 luster but not shining ; growth strise very delicate. 



Spire low-conoidal, apex obtuse ; whorls 4}, rather convex. 

 Aperture somewhat oblique, sublunate ; peristome simple, thin, the 

 upper lip arched forward ; columellar lip dilated and subreflexed. 

 Umbilical perforation minute, almost concealed in the adult. 



Alt. 2, diam. 3 mill. 



Kakepuku, Horokiwi, Wellington and Auckland, New Zealand. 



H. conella PFR., Mai. Bl. viii, 1861, p. 147 ; Monogr. v, p. 86.- 

 Phrixgnathus conella HUTTON, Trans. N. Z. Inst. xvi, p. 196. 



