182 GASTROPODA. \Pectimbranchi 



1. Lagochilus lignarium, Pfeiffer, 1857. Plate 35, fig. 5. 



Cyclostoma lii/nnriinn, Pfr., P.Z.S., 1857, 112; Mon. Pneum. viv., ii, 44; 

 Reeve, Conch. Icon., xiii, Cvclophorus, f. 94. Lagochilus lignarium, Pfr. : 

 Medley and Suter, P.L.S. N.S.W. (2), vii, 621; Suter, J. de Conch., xli 

 224; J. Mai., vii, 53. 



Shell small, umbilicated, turbinated, rather thin. Sculpture con- 

 sisting of irregular, membranaceous radiate threads, extending to the 

 umbilicus ; there is no trace of spiral sculpture. ( '<>Iour rufous to light 

 brown. Epidermis rather thick, opaque. Spire conoidal, outlines 

 s! raight, of about the same height as the aperture. Protoconch of 

 2 whorls, papillate, dark brown, smooth, and shining. Whorls 5 

 to 5J convex, the first 3 slowly, the others more rapidly increasing ; 

 base flatly convex. Suture well impressed. Aperture oblique, ovately 

 rotund. Peristome continuous over the parietal wall, mostly sharp, 

 but sometimes double, the outer one membranaceous and narrowly 

 expanded, with a slight notch at the suture ; callous inside. Columella 

 oblique, arcuate, slightly callous, not reflexed. Umbilicus narrow, 

 open, deep, about one-seventh of the major diameter of the shell. 

 Operculum horny, thin, of few whorls. 



Diameter Maj., 5 mm. ; min. 4-6 mm. : height, 4 mm. : aper- 

 ture height, 2-6 mm. Almost all the specimens I found were a little 

 smaller. 



Animal with a distinct posterior glandular notch. 



Dentition unknown. 



Type in the British Museum. 



Hab. North Island : Near Wellington ; Forty-mile Bush. South 

 Island : Wairoa Gorge ; Kenepuru Sound. 



This rare shell is living in moist places of the bush, sometimes in- 

 side rotten logs. 



8. Lagochilus pallidum, Hutton, 1883. Plate 35, fig. 6. 



Leptopoma (?) pallida, Hutt,, X.Z.J.S., i, 1883. 477; T.N.Z.I., xvi, 1883 

 (1884), 184, 210. Lagochilus pallidum, Hutt. : Hedley and Sutei, 

 P.L.S. N.S.W. (2), vii, 621 ; Suter, J. de Conch., xli, 224. 



Shell small, conical, subperf orated, pale brown. Sculpture con- 

 sisting of rather distant, irregular, and low spiral lirse, 2 to 3 on the 

 spire-whorls, 5 on the last whorl above the periphery, and about 5 

 upon the base, crossed by numerous oblique growth-lines and dis- 

 tant membranaceous plaits, which are easily rubbed off. Colour pale 

 brown, sometimes with a narrow pale band at the periphery of the 

 last whorl and 1 around the middle of the base. E/iiiln -mis thin, horny, 

 not shining. S/>irc acutely conical, the apex obtusely rounded, higher 

 than the aperture. Protoconch small, papillate, of 2 convex, dark- 

 brown and shining whorls, the first with a few faint spiral strife, the 

 second closely radiately striate. Whorls 5, rounded, the last dis- 

 tinctly angled at the periphery ; base flatly convex, depressed round 



