148 HELIX-HADRA. 



H. cassandra PFR. P. Z. S. 1863, p. 527 ; Mon. Hel. Viv. v, p. 

 243. ANGAS, P. Z. S. 1863, p. 520. Cox, Mon. Austr. L. Sh., p, 

 50. 



The low spire, delicate whitish color, with pale bands, and densely 

 granulate surface will distinguish this form. The specimen figured 

 may not be quite adult. A young shell before me shows an addi- 

 tional band just below the periphery. 



H. STUTCHBURYI Pfeiffer. PI. 43, fig. 50. 



Shell with the umbilicus nearly covered, turbinate-globose, thin, 

 minutely granulated above, seen under a lens ; pale tawny, banded 

 with rufous at the suture, and above the middle ; spire convex-con- 

 oid, rather obtuse ; whorls 5, a little convex, the last rotund, scarce- 

 ly descending in front, the base smooth ; aperture diagonal, round- 

 lunar ; peristome thin, narrowly reflected, dilated above the very 

 narrow umbilicus and almost closing it. (P/V.) 



Alt. 10, greater diam. 15i, lesser 13? mill: 



Drayton Range and Upper Dawson River, Queensland. 



H. Stutchburyi PFR. P. Z. S. 1856, p. 386 ; Mon. Hel. Viv. iv, p. 

 168. Cox, Monogr. Aust. L. Sh. p. 39, t. 10, f. 10. 



*** 



Doubtful Species oj Hadra or Badistes. 

 H. MUCIDA Pfeiffer. 



Shell umbilicated, turbinately depressed, rather thin, finely stria- 

 ted, deep red, appearing as if spread over with mould ; spire conoid, 

 rather blunt ; whorls 5, convex, gradually increasing, last rounded, 

 descending in front, sub-angular around the funnel-shaped umbili- 

 cus ; aperture nearly diagonal, roundly lunar, shining flesh color 

 within ; peristome briefly expanded, margins scarcely converging, 

 columellar margin triangularly dilated above and spreading. (Pfr.) 



Alt. 11, greater diam. 20, lesser 16f mill. 



Percy Isles, northeast coast of Australia. 



H. mucida PFR. P. Z. S. 1856, p. 329 ; Monogr. iv, p. 264. Cox 

 Monogr. Austr. L. Sh. p. 59. 



May belong to the group of H. aridorum, porteri, etc. A smaller 

 form measures, alt. 7J, greater diam. 15, lesser 13 mill. 



H. MURINA Pfeiffer. 



Shell umbilicated, turbinately-globose, thin, regularly striated, 

 granular, somewhat roughened, deep red; spire shortly conoid, 



