278 



HADRA. 



lower whorls closely ribbed by stout irregular and oblique flat- 

 topped costse, which are coarsest behind the aperture, and gradually 

 fade away on the upper whorls into fine striae; under the lens 

 irregularly pitted throughout; epidermis pale yellow, much 

 abraded, exposing in places the chalky-white of the shell substance ; 

 encircled immediately above the periphery by a chocolate zone 

 about a millimeter broad, and beneath the suture, which is 

 impressed, a slightly narrower band of the same hue, the interven- 

 ing space being wider than either band, the spire is so coiled that 

 the suture throughout its extent divides the lower band of the 

 upper whorl from the upper band of the succeeding one, lip of aper- 

 ture white; whorls four and a half, gradually increasing, evenly 

 rounded from the suture to the base, last descending in .an align- 

 ment with the peripheral band ; aperture very oblique, oval-lunate, 

 slightly expanded and reflected above, and much so beneath ; col- 

 umella remarkable for its wide and straight expansion callus, thin, 

 transparent; umbilicus narrow, deep, and spiral, abrupt at the 

 margin and steep within, partially overhung by the columella, and 

 slightly choked by an internal swelling of the termination of the 

 last whorl. (Bednall.) 



Major diameter 13, minor 11 '5, alt. 9'25 mill., height and length 

 of aperture 6*75 mm. ; diam. of umbilicus 2'5 mm. 



Near lllbillee Soakage, Everard Range, at an elevation of 2000 

 feet. (Bednall.) 



Helix (ffadra) everardensis BEDNALL, Trans. Roy. Soc. S. Austr. 

 xvi, p. 64, t. 1, f. 3a-c (Dec. 1892.) 



This species, of which only a single specimen was obtained, is the 

 smallest member of the subgenus Hadra yet known, and comes very 

 close to one taken during expedition to Lake Eyre in the years 

 1874-5, of which there are two examples in the South Australian 

 Museum Collection. 



Mr. Brazier on seeing the shell noted its very close resemblain 

 to H. australis Menke, but the figure of that species as reprodiK 

 in Dr. Cox's monograph could not be taken as a guide to its identi- 

 fication. 



H. ELDERI Bednall. PL 58, figs. 5, 6, 7. 



Shell umbilicated, depressedly globose, thin, translucent, coarselj 

 obliquely striated, more so at the suture ; yellowish-white, and hav- 

 ing two rufous bands, one, the broader, just above the periphery, 



