Mem. Nat. Mus. Vict., viit, 1934. 
TIIA LA SS 0 1IELTX TRAHSLTJCENS, A NEW 
VICTORIAN LAND SHELL. 
By C. J. Gabriel, Hon. Conchologist. 
Plate XVIII, figs. 1-3. 
The new land shell described below was presented to the 
National Museum by Mr. J. A. Kershaw together with three 
other species collected at the same time at Wilson’s Promontory : 
Chloritis victoriae (Cox), Helicarion cuvieri Ferussac and Rhytida 
lamproides (Cox). Wilson’s Promontory is the only Victorian 
locality from which the last named species has been recorded. 
Family ENDODONTIDAE Pilsbry. 
Genus THALASSOHELIX Pilsbry 1892. 
Thalassohelix translucens, sp. nov. 
Shell depressed, striated, thin, translucent, barely perforate. Spire rather 
elevated, convexly conoidal. Whorls including protoconch about four and a 
half, regularly increasing, flatly convex, with last whorl acutely angled at 
periphery. Sutures deeply impressed. Aperture oblique, rotundly lunate. 
Peristome thin, sharp. Columella short, oblique. Inner lip reflected above, 
almost concealing the narrow and deep perforation, forming a thin callus. 
Protoconch faintly radiately striate and shows indistinct microscopic spiral 
lines ; sculpture of succeeding whorls consists of fine, oblique, irregular growth 
lines and microscopic spiral striae. Colour pale horny, with numerous faint 
zigzag brown bands of variable pattern which fade at base. 
Measurement. — Holotype (Reg. No. R14096) : — major diameter, 14.5 mm. ; 
minor diameter, 12 mm. Paratype (Reg. No. R14097) : — major diameter, 
18 mm. ; minor diameter, 15.5 mm. 
Locality. — Lilly Pilly Gully, National Park, Wilson’s Promontory, under 
logs. 
Observations. — The genus has hitherto been represented in 
Victoria by T. fordei (Braz.) var. m‘coyi (Petterd) from which 
the new species may be distinguished by its more angled 
periphery and by its zigzag colour bands ; the latter are more 
distinct in the paratype than they are in the holotype. 
Plate XVIII. 
Figs. 1, 2 and 3. Thalassohelix translucens sp. nov. ; holo- 
type. Twice natural size. 
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