O-t AUSTRALIAN LAND SHELLS. 



XXIII. SECTION AMPELITA. Pfr. Vers. p. 137. 



* H. leucocheilus. 



136. Helix leucocheilus. Cox. Plate VIII. Fig. 7, 7 a, 7 b. M.C. 

 Helix Marine. Cox, Pro. Zool. Soc, 1864, p. 593. 



Shell umbilicated, depressly-orbicular, nearly discoid, solid, pellucid, 

 obsoletely radiately striated, under the lens, on both sides, minutely 

 granulated, colour varying between dirty-yellow and pale-chestnut ; 

 a reddish or chestnut spiral band above the keel, and another along 

 the suture, with a broad chestnut ring surrounding the umbilicus, 

 which is pale within; spire slightly convex ; whorls 5, rather flattened, 

 last keeled behind, remainder convexly-rounded ; aperture sub- 

 quadrately-ovate ; peristome white, lipped within, expanded, colu- 

 mella very slightly expanded, and concealing a very small portion of 

 the umbilicus, which is pervious and moderate. 



Diameter, greatest - 65 ; least 0*57 ; height 0*30 of an inch. 



Habitat. Clarence and Richmond Rivers, N. S. "W. MacGillivray. 

 Brisbane, Queensland. Brazier. 



Among the few varieties there is one of a reddish-chestnut colour 

 without bands, Fig. 7 a. 



XXIV. SECTION CAM JENA. Pfr. Vers. p. 138. 



* H. bipartita. * H. semicastanea. * H. similaris. 



* H. Incei. * H. Yulei. * H. mansueta. 



* H. Lessoni. * H. Blomfieldi. * H. mucida. 



* H. append iculata. * H. cerata. * H. pliculosa. 



* H. Curtisiana. * H. murina. * H. morosa. 



137. Helix bipartita. Fer. Plate V. Fig. 7. M.C. 

 Fer., Hist. PL LXXV. A. Fig. 1. 



Reeve, Conch. Icon. sp. 359. 



Shell umbilicated, globose, inflated, solid, irregularly striated, under 

 the lens minutely granulated, reddish-yellow, with a narrow reddish- 

 chestnut band under the suture, body whorl, below the periphery, 

 dark purplish- chestnut; spire semi-globular, suture crenulated ; whorls 

 7, slightly convex, last descending in front ; aperture diagonal, 

 ovately-lunar, white within ; peristome white, expanded and re- 

 flected, margins rather approaching and joined with a very thin 

 callus. 



Diameter, greatest 2-60 ; least 2-00 ; height 1*70 of an inch. 



Habitat. Cape York, Albany Island, Cape Direction, N. E. Aus- 

 tralia. Mac Gillivray. 



This species varies much in colour. Some of my specimens, of a pale- 

 yellowish hue, have the lower half of the body whorl scarcely a 

 shade darker tban the upper portion. 



138. Helix Incei. Pfr. Plate V. Fig. 5. Plate XVIII. Figl. M.C. 

 Pfr., Pro. Zool. Soc, 1845, p. 126. 



Peeve, Cone. Icon. sp. 356. 



Shell umbilicated, depressby-globose, very finely striated, with nume- 



