60 HELIX-LAOMA. 



considered as an intermediate form between Phrixgnathus and the 

 subgenus Laoma. 



Among the few specimens none had the animal left in, and the 

 dentition, therefore, remains unknown for the present. (Suter.) 



L. MARGI^ATA Hutton. PI. 23, figs. 94, 95, 96. 



Shell small, conical, umbilicated, striated. Color pale horny- 

 brown, regularly longitudinally banded with reddish-fulvous, the 

 fulvous bauds becoming obsolete near the mouth, base pale horny- 

 brown. Spire conical, slightly acute; whorls 51, flattened, sharply 

 keeled; the first 1J whorls smooth, but spirally striated, the rest 

 longitudinally striated with growth-lines ; base slightly convex, 

 radiately striated, and very delicately spirally striatulated ; periph- 

 ery sharply keeled ; suture marginated ; umbilicus narrow, about 

 one-tenth of the diameter ; aperture vertical, rhomboidal ; peri- 

 stome thin, the outer and inner margins nearly parallel, columellar 

 margin slightly reflected. Greatest diameter 0*15, least 0'13, 

 height 0*1 inch. 



Animal small, eye peduncles long, the tentacles moderate; body 

 elongate, foot slightly produced behind beyond the shell. Color 

 pale yellowish ; peduncles, a stripe on each side of the head, and 

 another short stripe in the middle on each side of the foot purplish- 

 gray. Dentition, 40-1-40. (Hutt.) 



Greymouth, New Zealand. 



Phrixgnathus marginatus HUTTON, Trans. N. Z. Inst. xv, p. 137, 

 1882 ; I. c., xvi, p. 196. 



The figures were drawn from the type. 



L. CELIA Hutton. Vol. IX, PL 1, fig. 10. 



Shell trochoidal, narrowly umbilicated, carinated. Somewhat 

 translucent, alternately flamed with white and reddish-brown above, 

 horny-brown beneath. Surface apparently smooth and lustrous, 

 but not glabrous ; under a lens seen to be obliquely striated, decus- 

 sated by very fine, crowded spiral lines. 



Spire conical, composed of 5 whorls, which are rather convex and 

 separated by simple, slightly impressed sutures. Last whorl dis- 

 tinctly but rather bluntly angular at the periphery, very convex 

 below, and deeply indented around the umbilicus. Aperture 

 slightly oblique ; peristome thin, expanded at the columella. 



Alt. 2, diam. 2 mill. 



