14 HELIX-PEDINOGYRA. 



A subgenus of doubtful affinities. The two known species are 

 confined to Eastern Australia. 



H. CUNNINGHAMI Gray. PL 2, figs. 28, 29, 30, 31. 



Shell very broadly umbilicated, spire slightly convex ; color yel- 

 lowish or greenish, with brown spiral bands ; body-whorl not dis- 

 tinctly carinated. 



Discoidal, very broad, somewhat oblong or transversely inflated, 

 solid and strong, opaque, greenish-yellow with numerous encircling 

 bands and lines of brown ; generally light (but sometimes dark) 

 within the umbilicus. Surface with close, irregular fine growth- 

 wrinkles, decussated above the periphery and within the umbilicus 

 by numerous fine but indistinct spiral impressed lines. Spire a lit- 

 tle convex, whorls 5? ; apex flattened, earlier whorls with distinct 

 arcuate growth folds but no spiral lines. Whorls of the spire con- 

 vex, slowly increasing ; last whorl very wide, convex-sloping above, 

 very convex beneath ; its latter third rapidly widening ; toward 

 the aperture it descends nearly to the base of the preceding whorl, 

 and behind the baso-columellar lip it is broadly constricted. Aper- 

 ture horizontal, truncate-oblong, deep chocolate within ; peristome 

 thick, narrowly expanded, the margins joined by a shining callus, 

 basal and upper margins white, the outer portion dark brown. 

 Umbilicus broad and deep, showing all the volutions. 



Alt. 23, greater diam. 64, lesser 47 mill. 



Brisbane to Rockhampton, Queensland, Australia. 



H. cunninghami GRAY, Proc. Zool. Soc., London, 1834, p. 64. 

 GRIFFITH'S Cuviers' Anim. Kingd., t. 36, f. 4. PFEIFFER Mono- 

 graphia i, p. 374; Conchyl. Cab., t. 130, f. 11-13. REEVE, Conch. 

 Icon., f. 363. Cox, Mon. Austr. Land Sh., p. 52, t. 1, f. 5, 5a. 

 MOUSSON in Journ. de Conchyl. 1869, p. 60 (var. minor, alt. 18, 

 diam. 52 mill., scarcely angled at periphery ; compressa, more de- 

 pressed, last whorl more acutely angled, compressed, olive with dark 

 lines). Macrocyclis cunninghami Gray, BECK, Index, p. 24. FRAU- 

 ENFELD in Verh. zool-bot. Ges. Wien, 1869, p. 876. H. tupinieri 

 EYDOUX, in Guerins' Mag. de Zool. 1838, pi. 114. H. (Pedinogyra, 

 cunninghami Gray, ALBERS, Die Heliceen 2d ed. p. 162. HEDLEY, 

 List Queensl. Land Sh. in Proc. Roy. Soc. Queensl. v, p. 62, 1888 ; 

 loc. cit. vi, p. 63 (anatomy), 1889. 



