AUSTKALIAX LAXD SHELLS. 47 



liqiiely-lunar, rather large, lip thinly reflected, broadly depressed at 



the columella, lip white. 

 Diameter, greatest - 97 ; least()-~3; height 0*83 of an inch. 

 Habitat. Picton and Mulgoa, New South Wales. Cox. 



Reeve, from whom this description is taken, states that it is "a 

 light sub-inflated diaphanous horny shell, of simple character." 

 The late Mr. Hugh Cuming was the first to draw my attention to 

 the identity of this species. 



XIX. SECTION PLAGIOPTYCHA. Pfr. Vers. p. 135. 



* H. duclosiana. 



121. Helix duclosiana. Fer. Plate XI. Fig. 2, 2a., copied 



from Ferussae. 



'Ferussae, Hist. Moll. PI. 51, A. Pig. 6. 



Reeve, Cone. Icon. sp. 761. 



Shell umbilicatecl, depressly-semi-globose, rather thin, very finely 

 obliquely striated, shining, alabaster-white ; spire shortly conoid, 

 apex rather obtuse ; whorls \\, slightly convex, last somewhat de- 

 pressed, descending in front, rather flattened at the base ; aperture 

 diagonal, lunately-oval ; peristome simple, margins somewhat ap- 

 proaching, right slightly expanded, basal furnished within with a 

 deep transverse deposit of callus, outwardly forming a white 

 wrinkled mark like a cicatrix, columellar margin dilated above, re- 

 flexed, J covering the narrow umbilicus. 



Diameter, greatest G"60; least 0-.51 ; height 0"31 of an inch. 



Habitat. New Holland. Ferussae. 



I have given Pfeiffer's description of this shell Jlon. Hel. Viv., Vol. 

 III., p. 243, which, I think, has been erroneously considered to be 

 Australian. Peeve remarks that it is a semi-transparent white shell, 

 having a tooth-like callosity within the aperture, and no correspond- 

 ing indentation without. As this forms one of a small and very 

 natural group of shells, the rest of which are known to be "West 

 Indian, it seems probable that its true habitat will prove to be some 

 locality nearer Hayti than Australia. 



XX. SECTION PLANISPIRA. Pfr. Vers. p. 136. 



* H. brevipila. * H. Porteri. * H. Hystrix. 



122. Helix brevipila. Pfr. Plate V. Fig. 2 a., 2b., natural me 



and magnified. M.C. 



Pfr., Pro. Zool. Soc, 1849, p. 130. 

 Reeve, Cone. Icon. sp. 777. 



Shell umbilicated, depressly-globose, thin, translucent, obsoletely ru- 

 gosely striated, and, under the lens, very finely rugose, covered 

 throughout with short stiff hairs, horny reddish-brown ; spire small, 

 broadly conical, apex acute ; whorls 5, rather convex, last rounded, 

 large, somewhat tumid, deflected in front; umbilicus narrow ; aper- 



