HELIX-HADRA. 137 



H. CAILLETI Crosse. 



Is a member of this group of species. See MANUAL, vol. iii, p. 216, 

 pi. 50, figs. 27, 28. 



H. MABELLEI Crosse. 



Undoubtedly a Hadra of the Badistes type. See MANUAL, iii, p. 

 216, pi. 50, fig. 29. 



H. SUBGRANOSA Le Gllillou. 



Shell subglobose, umbilicate, thin pellucid, pale rufous spadiceous, 

 whitish brown below, longitudinally and transversely delicately 

 striated, almost granulated ; whorls 4, convex-depressed ; lip acute ; 

 at the umbilicus angulated ; inner lip straight, reflexed over the 

 wide, deep umbilicus. ( GuillJ) Alt. 23, diam 28 mill. 



Northern Australia. 



H. subgranosa GUILL. in Revue Zool., p. 137. PFR. Mon. Hel. 

 Viv. i, p. 83. 



It is doubtful where this unfigured species belongs. It may be a 

 Xanthowelon. 



H. BLACKMANI Cox. PI. 40, figS. 6, 7. 



Shell umbilicated, globosely-turbinate, thin, not shining, every- 

 where obscurely radiately striated, and, under the lens, minutely 

 granulated, yellowish-horny ; spire conical, apex obtuse, suture rather 

 deep ; whorls 5, convex, quickly increasing, last very large, inflated, 

 regularly rounded throughout, strongly constricted behind the 

 mouth ; aperture diagonal, lunately-roundly-oval ; peristome sim- 

 ple, straight, thin, much expanded, white, margins very slightly con- 

 verging, joined by a very thin callus, columellar margin expanded 

 above and \ concealing the moderately sized umbilicus. (Cox.) 



Alt. 0*45, greater diam. 0*65, lesser 0*55 inch. 



Warroo, Port Curtis, Queensland. 



H. blackmani Cox, Mon. Austr. L. Sh. p. 45, t. 11, f. 7, 7a. 



The only two specimens I have seen are in the collection of the 

 Australian Museum and have a striking resemblance in form to 

 Dermatocera vitrea. It may also in some manner be looked upon 

 as connecting such shells as H. pachystyloides and H. aridorum. 

 (Cox.) 



H. PLETHORICA Crosse. PI. 40, figs. 4, 5. 



Shell umbilicated, globose-turbinate, rather thin, diaphanous, 

 longitudinally rudely costulate-striate ; straw-buff; spire moderately 



