108 AUSTRALIAN LAND SHELLS. 



reddish-horny instead of white, I should have been inclined to pause 

 before describing it as a new species. 



256. Helicina Yorkensis. Pfr. Plate XVII. Fig. 16 natural 

 size, 16 a., 16 b. much magnified. M.C. 

 Pfr., Pro. Zool. Soc, 1862, p. 277. Man. Pneum. Viv., 1865. Suiyl 



Sec, p. 228. 



Shell globosely-conical, rather solid, somewhat closely spirally striated, 

 flesh-coloured, with a sutural yellow fascia, and another broader 

 brownish- violet band ; spire regularly conoid, rather acute at the 

 apex ; whorls about 5, flattened, last a little exceeding the spire, 

 rounded at the periphery, beneath in the centre with white, granu- 

 lated circumscribed callus ; columella callous, arched, not very 

 oblique, somewhat serai-circular ; peristome shortly expanded, basal 

 margin arcuately joined with the columella ; operculum whitish. 



Diameter, greatest 0*22 ; least 0-20 ; height 0*17 of an inch. 



Habitat. Cape York, N. E. Coast of Australia. MacGillivray. 



I copy Pfeiffer's description, not having access to any specimen having 

 yellow and violet spiral bands, and a whitish operculum. Two 

 specimens received from Cuming, in whose collection the type is 

 retained, belong to two varieties of another species. 



257. Helicina Gouldiana. Forbes. Plate XVII. Pig. 15 

 natural size, 15 a., 15 b. much maqnified. M.C. 

 Forbes, Fog. of Rattlesnake, Vol. II., p. 382. PI. III. Fig. 3. _ 



Shell depressly- globose, rather solid, slightly shining, spirally 

 striated, the stria) faintly intersected by radiating lines, colour red- 

 dish, yellowish, or brownish ; spire broadly conoid, obtuse; whorls 

 5, flattened, last obscurely angulated ; aperture oblique, somewhat 

 triangularly lunate, angular above and below, with much finely 

 granulated, thin, callosity between the margins ; peristome white, 

 thickened, shortly expanded ; operculum yellowish-horny. 



Diameter, greatest 0' 23 ; least 0'20; height 0*15 of an inch. 



Habitat. " Two Isles," near Cape Flattery, and Lizard Island, N. E. 

 Coast of Australia. MacGillivray. 



