fi4 AUSTRALIAN LAM) r-HET.T.S. 



(greenish horny, Reevr), irregularly striated ; spire conoid, rather 

 obtuse, suture deeply channelled ; whorls 5.\, slightly convex, last 

 rounded, deflected in front ; aperture diagonal, roundly-lunate ; 

 peristome thickened, right margin scarcely expanded, basal re- 

 flected, columellar margin dilated, appressed (columellar margin re- 

 flected, broadly callously dilated over the umbilical area, Reeve). 

 Diameter, greatest 0-77 ; least 0-68 ; height 0-41 of an inch. 



Habitat. Shark's Bay, Western Australia. Benson. 



Pfeiffer's description is that given above from Mon. Bel. Viv., Vol. IV., 

 p. 283. Benson states that it was found along with H. plectilis, and 

 appeared to be in a sub-fossil state. 



Reeve remarks that this species "has a worn opaque- white aspect, but it 

 has some faint traces of rusty-brown, so that the species in fine con- 

 dition may probably be coloured." 



160. Helix Dringi. Pfr. Plate XL Fig. 9, copied from Reeve. 

 Pfr., Symbols, Vol. ILL, p. 73. 



Reeve, Cone. Icon. sp. 769. 



Shell with a covered umbilicus, depressed, thin, fragile, above very 

 closely and very finely plicated, whitish, opaque, girt with pellucid 

 lines ; spire somewhat flattened ; whorls 4-|, scarcely convex, last 

 slightly compressed on the side, smooth at the base, inflated ; aper- 

 ture lunar, of one colour ; peristome expanded, somewhat thickened 

 within, columellar margin shortly arched, dilated, reflected, and 

 appressed. 



Diameter, greatest 0*51 ; least 0'43 ; height - 29 of an inch. 



Habitat. Eastern Australia, near Torres Strait, under decayed leaves. 



Dring. 

 I have given Pfeiffer's description. The specimen is unique. Peeve 



speaks of it as a delicate flatly, globose, opaque, white species, 



encircled with pellucid bands and lines. 



XXVIII. SECTION CALLIOOCHLIAS. Pfr. Vers. 

 p. 143. 



* H. Praseri. * H. Mitchells. 



161. Helix Fraseri. Gray. Plate X. Fig. 6. M.O. 

 Gray, Pro. Zool. Soc, 1836, p. 63, and in Griffith's Anim. Kingd. 



Moll. PI. XXXVI. 

 Reeve, Cone. Icon. sp. 360. 



Shell imperforate, globosely-turbinated, smooth, very faintly obliquely 

 striated, under the lens exhibiting extremely minute spiral lines and 

 lengthened granulations not perceptible to the touch, reddish-yellow, 

 with numerous spiral chestnut lines and bands, darker about the 

 mouth ; spire broadly conical, obtuse ; whorls 6, slightly convex, 

 last convex, above deflected in front ; base marked as above, but 

 granulations more distinct ; aperture diagonal, ovately-lunate, black 

 within, then of a shining livid hue ; peristome straight, broadly ex- 

 panded, reflected, margins rather approaching, and connected by 



