HELIX-HADRA. 145 



The shell is globose, rather thin but strong, of a yellow tint, or 

 tinged with green or brown, having two purple-brown bands. Spire 

 obtusely conoidal ; whorls nearly 5, convex, the apical whorl shin- 

 ing, smooth ; last whorl globose, rather deeply descending in front. 

 Aperture rounded-lunar, oblique, white within, showing the brown 

 band ; peristome blunt, not expanded, white ; the columella ex- 

 panded, reflexed nearly over the narrow umbilicus. 



Alt. .16, greater diam. 17? mill. 



Port Augusta; Tillowie, near the western slopes of Flinder's 

 Range, S. Australia. 



H. bitceniata Cox, Mon. Austr. L. Sh., p. 50, t. 4, f. 9. ANGAS, 

 P. Z. S. 1876, p. 268, t. 20, f. 15, 16. IT. ftindersi Ad. and Ang. 

 P. Z. S. 1863, p. 521 ; ANGAS in Quart. Journ. of Conch, i, p. 135. 



This is the most globose of the present group of two-banded 

 forms. It may^ besides be known by its narrow, half-covered, but 

 deep umbilicus, strong striation, etc. 



The name flindersi has precedence, but was described briefly, 

 from dead examples, and not figured . I have preferred the first 

 really recognizable description, that of Dr. Cox. 



H. LORIOLIANA Crosse. PI. 13, fig. 55. 



Shell globose-depressed-conoidal, imperforate or nearly so, rather 

 thin but strong, yellowish, with two brown bands, one at suture, the 

 other above the periphery, and a small brown umbilical patch. Sur- 

 face not granulate, lightly obliquely striate ; outer lip a little ex- 

 panded, obtuse; columella reflexed over or nearly over the um- 

 bilicus. 



The shell is less globose than H. bitceniata, and not nearly so 

 deeply cut by the oblique striae. Spire bluntly conoidal ; whorls 5, 

 scarcely convex, separated by superficial sutures ; the last whorl de- 

 scending in front, not at all keeled at the periphery. Aperture 

 oblique, white and bifasciate within ; peristome gradually but only 

 slightly expanded, columella triangularly reflexed over the um- 

 bilicus, rose-tinted ; terminations of peristome approaching slightly. 



Alt. 18, diam. 23 mill. 



South Australia. 



H. lorioliana CROSSE Journ. de Conchyl. 1863, p. 273, t. 9, f. 6. 

 ANGAS, P. Z. S. 1863, p. 520 ; Quart. Journ. of Conchol. i, p. 

 135. not of Cox. 

 10 



