134 HELIX-HADRA. 



H. MOROSA Morelet. PI. 34, fig. 10. 



Shell covered perforate, turbinate-globose, depressed, thin, plicate- 

 striate, granulated when under a lens, unicolored deep chestnut; 

 spire conoid-depressed ; whorls 6, but slightly convex, moderately 

 increasing, the last not descending ; base rather flattened ; aperture 

 oval, concolored, the peristome scarcely thickened, narrowly re- 

 flexed, purple, margins joined by a callus ; columellar margin dilated 

 in a triangular lamina covering the umbilicus. (Morelet.*) 



Alt. 20, greater diam. 31, lesser 26 mill. 



Moreton Bay, Australia. 



H. morosa MOR. Journ. de Conchyl. 1853, p. 369, t. 11, f. 15. 

 PFR. Monogr. iv, p. 248. 



Compare H. coriaria Pfr. 

 H. DAINTREEI Brazier. PI. 38, fig. 59. 



Shell umbilicated, somewhat depressedly globose, very thin, 

 rugosely striated, minutely granulated, pale yellowish brown ; spire 

 conical, obtuse; whorls 5, convex, last large, inflated, base convex, 

 nearly smooth ; aperture oblique, lunate ; peristome thickened, 

 white, margins approximating, right descending in front, columellar 

 reflected and partly covering the umbilicus. (Brazier.) 



Alt. 9, greater diam. 12, lesser 9? lines. 



Muggerabaa, Moreton Bay, Queensland* 



H. daintreei BRAZ., P. Z. S. 1875, p. 33, t. 4, f. 8. 

 H. DUNKIENSIS Forbes. 



This species was described by Mr. Tryon in Vol. Ill of the 

 MANUAL, p. 215, pi. 50, figs. 22, 23, 24, in the Subgenus Dorca&ia. 

 It is very closely allied to H. coriaria, differing in the habitat and 

 less covered umbilicus. 



Dunk Island, N. Australia. 



H. dunkiensis FORBES, Voyage of H. M. S. Rattlesnake ii, p. 378. 

 Cox, (as Galaxias~), Monogr. Austr. L. Sh., p. 43, t. 8, f. 9. TRY- 

 ON (as Dorcasia) Manual, 2d. Ser., vol. iii, p. 215. 



Cox says that the H. dunkiensis of Reeve is a different shell. 

 H. PRUNUM Ferussac. 



See the MANUAL, vol. iii, p. 215, pi. 50, figs. 25, 26, where this 

 species has been described under Dorcasia. It is however a Badistes, 

 very close to H, gulosa and H. dunkiensis in characters. It is doubt- 

 ful whether Cox has rightly identified the form. I have not identi- 



