HELIX-HADRA. 133 



Sh., p. 36, t. 2, f. 7 ; t. 8, f 10, t. 10, f. 5. REEVE, Conch. Icon., f. 

 417. H. mastersi Cox Cat. Austr. L. Sh., p. 19, 1864. 



A chestnut-colored shell, very variable in size and degree of 

 carination. The smallest specimen before me (see pi. 43, fig. 51) 

 measures alt. 16, diam. 20 i mill. The color of the lip varies from 

 pink to nearly white ; the color of the surface from dark chestnut 

 to yellowish-brown. 



This species is probably a synonym or mere variety of H. gulosa 

 Gould, described a year previous. H. scotti Cox is perhaps a local 

 variety. 



H. SCOTTI Cox. PL 43, figs. 47. 



Shell narrowly umbilicated, turbinately-globose, radiately roughly 

 striated, minutely granular throughout, sub-pellucid, chestnut col- 

 oured, paler at the apex ; whorls 6, slightly convex, the last tumid 

 and rounded ; aperture lunately sub-circular ; peristome moderately 

 thickened, straight, partly reflected, white within. (Core.) 



Alt. 0'90, greater diam. 1'50, lesser 1*25 inch. 



Mt. Keera, Wollongong, N. S. Wales, Australia. 



H. scotti Cox, Cat. Austr. L. Sh., p. 36, 1864 ; Monog. Austr. L. 

 Sh., p. 39, t. 10, f. 4, 4a. PFR. Monog. v. p. 340. 



Closely allied to H. coriaria (gulosa Old.), of which it is pro- 

 bably a variety. 



H. MONACHA Pfeiifer. PI. 43, figs. 39. 



Shell imperforate, globosely-conical, solid, roughly striated, and 

 under the lens, minutely granulated, of a chestnut color ; spire con- 

 oidly elevated, rather obtuse ; whorls 5, moderately convex, grad- 

 ually increasing in size, the last slightly decending in front, obsoletely 

 sub-angled in the middle; aperture for the most part diagonal, 

 rotundately-lunar, livid within, shining, peristome flesh-colored, short- 

 ly expanded throughout ; margins separated, the columellar mar- 

 gin being expanded at its insertion into a triangular adnate plate. 

 (Cox.} Alt. 19, greater diam. 27, lesser 23 mill. 



Ash Island, Hunter River ; also Mulgoa, near Penrith, and at the 

 Kurrajong, N. S. Wales, Australia. 



H. monacha PFR. P. Z. S. 1859, p. 25, t. 43, f. 7 ; Monogr. Hel. 

 Viv. v, p. 278. Cox, Monogr. Austr. L. Sh. p. 38, t. 18, f. 13. 



More elevated than H. coriaria, with dark specimens of which it 

 is likely to be confused. 



