30 COCHLOSTYLA -HYPSELOSTYLA. 



DESH. Hist. t. 63 B, f. 5. Cochlostyla translucida PFR. & CLESS., 

 Nomencl. Hel. Viv. p. 209. TAPPARONE CANEFRI, Ann. Mus. 

 Civ. Genov. xix, p. 103. Bidimus quoyi PFR., Monogr. ii, p. 16 ; 

 viii, p. 10. 



C. HINDEI Cox. Vol. vii, pi. 14, figs. 71, 72. 



Shell rather thin, semi-translucent, pyramidally ovate, noii- 

 umbilicated; whorls-six and a half to seven, the first veutricose, the 

 second less so, the remainder almost flat in the centre but made to 

 appear convex by being contracted towards the sutural junction ; 

 they are white and are covered with a thin membranous epidermis 

 of a brownish-yellow or light chestnut color, which easily peels off 

 by exposure, the epidermis in matured specimens is only present on 

 the first three whorls, those beyond are nude, and from age and 

 exposure are whitish-brown ; the first three whorls are slantingly 

 uniformly transversely striated Avith lines of growth, the striation 

 showing through the membranous epidermis ; the suture is impressed 

 and is lined below on the lower two whorls by a narrow but very 

 distinct dark band, which grows finer as it ascends and becomes lost 

 about the middle of the third whorl ; the striation appears worn 

 off the upper 3 or 4 whorls. Columella arched, adnate, with a dis- 

 position only to be twisted, the lower end of the columella has a 

 blunt tubercular plait which is whitish soiled-looking, this streak of 

 almost white extends upwards as a narrow margin to the internal 

 edge of the columella. The aperture is oval with a rather broad 

 expanded reflected lip all round, the peristomal surface of which is 

 dark brown, almost quite black; the interior of the aperture is of 

 pale cream color ; the dark band which borders the suture shows 

 through the substance of the shell internally. 



Length 40 mill. ; breadth of last whorl 19 mill.; length of aper- 

 ture 20 mill. ; length of last whorl with aperture 22 mill. ; from apex 

 of shell to insertion of outer lip 14 mill. (Cox.') 



New Ireland. 



Cochlostyla hindei Cox, Proc. Linn. Soc. N. S. Wales (2), ii, p. 

 1063, March 21, 1888. 



The following species is evidently closely allied to this, perhaps a 

 synonym. 



C. HEIMBURGI Brancsik. PI. 13, figs. 58, 59. 



Shell shining, delicately striated; greenish-testaceous, the apex 

 more livid ; sometimes the last whorl is ferruginous. Turrited-conic, 



