BIOLOGY OF SNOWY RIVER AREA 163 



Genus ALLODISCUS Pilsbry, 1892. 

 Allodiscus niveus (Hedley). 



1896. Endodonta nivca Hedley, Ree. Aust. Mus., II, p. 102, pi. 23, figs. 5-7. 



Size of Type.— Maj. diam., 3-25; min., 2-75; alt,, l-5mm. 



Type Locality.— Wilson's Valley, at an altitude of 4,500 ft. ; Mt. 

 Kosciusko, New South Wales. 



Observations. — A small, white, thin, shining shell possessing a 

 narrow perforation and sunken spire or as the author describes 

 it a shallow crater, one third of the shell's major diameter. It is 

 a distinctive form and with the excellent figures provided no dif- 

 ficulty should be experienced in its identification. The author 

 remarks "This species nearly approaches E. antialba Beddome 

 from Tasmania, from which its narrow umbilicus and shallow 

 spire readily distinguishes it." Under decaying timber splendid 

 examples were obtained, one of which exceeds the dimensions of 

 type measuring 4- 3mm. This is an interesting addition to the 

 Victorian land shell fauna. 



Locality.— 8 specimens (F 1679) Wombargo Creek (4,000 ft). 



Allodiscus meracus (Cox and Hedley). 



1912. Flammulina meraca Cox and Hedlev, Mem. Nat. Mus. Melb., No. 4, 



p. 13, pi. 3, figs. 19-21. 

 1930. Allodiscus meracus (Cox and Hedley). Gabriel, P.R.S. Vic., XLIII, 



Pt. 1, (N.S.), p. 83. 



Size of Type. — Maj. diam., 4; min., 3; alt., 2mm. 



Type Locality. — Dandcnong Ranges, Victoria. 



Observations. — A small, pure white species frequently located 

 in association with //. subdepressa Brazier, on many of our 

 mountainous districts under charred and decaying timber. The 

 animal is of a very dark colour rendering it more difficult to 

 detect than its associate. In 1930, one of us (C.J.Gr.) referred to 

 two specimens collected at Paradise Falls, near Whitfield showing 

 a slight increase in size of the umbilicus. These are similar to 

 the Wombargo shells and we regard them as variants of Cox and 

 Hedley 's meracus. 



Local it ij. — 8 specimens (F 1679) Tableland West of Wombargo 

 (4,500ft.), (K.C.Rogers). 



Genus PARALAOMA Iredale, 1913. 

 Paralaoma niorti (Cox) 



1864. Helix morti Cox, Ann. Mag. Nat. Hist., (3), XIV, p. 182. 



1930. Laoma morti (Cox). Gabriel, P.R.S. Vic, XLIII, Pt. 1, (N.S.), p. 78. 



1937. Paralaoma morti (Cox). Iredale, Aust. Zool., VIIT, Pt. 4, p. 313. 



