LAND SHELLS OF VICTORIA 121 



propose alpina as the name of the variety." Alpina being pre- 

 occupied, Iredale (loc. cit.) lias renamed it Oreomava Johnston i. 

 Petterd's species is fairly abundant, easily recognisable and could 

 not be confused with any Victorian form. Larger specimens 

 exist, the type dimensions of which are exceeded in a specimen 

 from Ferntree Gully, which measures 3mm. This is the Ortho- 

 type of Oreomava. 



Oreomava cannfluviatilus Gabriel. 



1929. Allodiscus cannfluviatilus Gabriel, Vie. Nat, XLVI, (G), p. 133, figs. 1, 



2, and text fis;. 



1930. Id., P.R.S. Vie.. XLIII, Pt. 1, (N.S.), p. S3. 



1937. Omnnavu cannfluriatilus (Gabriel). Iredale, Aust. Zool., VIII, p. 330. 



Size of Type— -Mai diam., 2-8; min., 2-4: alt,. l-7iiim. 



Localities.— Type, Cann River (Nat. Mus. Vic.) collected by J. 

 Clark; Snuff Gully near Lakes Entrance (Self), under decay- 

 ing timber. 



Observations. — A distinctive little form. Bordering the umbili- 

 cus, several rather strong spiral line are evident; this is a con- 

 stant feature, providing a helpful and striking diagnostic charac- 

 ter. Compared with Helix otwayensis Petterd, it may be dis- 

 tinguished by its fewer ribs, and the presence of an umbilicus. 

 Found in association with Flammulina excelsior Hedley, Gharopa 

 tamarensis (Petterd), and Ehytida ruga (Cox). 



Genus ALLODISCUS Pilsbry, 1892. 

 AUodiscus dandenongensis Petterd. 



1872. Helix (Charopa) subdepressa Brazier, P.Z.S. Loud., 1871, p. (ill (mil 

 Helix subdepressa Orbigny, Prod. Palaeont., Ill, p. 1, 1852). 



1879. Helix dandenongensis Petterd, Journ. of Conch., II, p. 355. 



1930. AUodiscus subdepressus (Brazier). Gabriel, P.R.N., Vie., XLIII pt 1, 

 (N.S.), p. 82. 



Size of Type. — Maj. diam., 3-17; min., 2-11; alt., 105; diameter 

 of umbilicus, l-58mm. 



Localities. — Snowy Eiver and Fernshaw (Kershaw) ; Dande- 

 nong Range (Petterd and Self) ; Oakleigh (C. French) ; Gem- 

 brook (Cogliill) ; Emerald District ( Jarvis) ; Yarragon (Nat. Mus. 

 Vic.) ; S. Gippsland (Rev. G. Cox) ; Korumburra (F. L. Billing- 

 hurst) ; Meredith (J. PL Young) ; Balook and Mt. Erica (C. Oke) ; 

 Marysville, Hordern Vale, Lome (Self) ; Trentham (J. K. and 

 R. C.Gabriel). 



Observations. — A white shell, with an umbilicus equalling more 

 than half the diameter. It is of gregarious habit, being commonly 

 located in large numbers under decayed timber and among moss. 

 Many more localities could be recorded but the above are sufficient 



