114 LAND SHELLS OF VICTORIA 



Genus TUKBOLAOMA Iredale, 1937. 



Turbolaoma turbinuloidea (Gabriel). 



1930. Laoma turbinuloidea Gabriel, P.R.S. Vic, XLIII (N.S.), pt. 1, p. 81, 



pi. 2, fig. 7. 

 1937. Turbolaoma Uirbinuloidea (Gabriel). Iredale, Aust. Zool., VIII, p. 317. 



Size of Tfpe.-M.aj. diam., 2-2; min., 2-2; alt., 2 -0mm. 



Locality. — Bairnsdale (T. Worcester). 



Observations. — A small, umbilicated, shining, thin, chocolate- 

 brown, turbinately-globose shell, with nothing approaching it in 

 Victoria. So strikingly peculiar is this form that in the original 

 description a suggestion was made that the species may represent 

 a new genus. Naming the above as the type, Iredale erected 

 Turbolaoma and added "the species differs in its few very 

 rounded whorls with deep sutures, very fine sculpture, thin shell, 

 rather rounded mouth, deep narrow umbilicus, columella reflected, 

 and may not even be related to the Laomid Shells proper." Type 

 in National Museum, Victoria. 



Family FLAMMULINIDAE 



Genus THRYASONA Iredale, 1933. 



Thryasona diemencusis (Cox). 



1868. Helix diemcnensis Cox, P.Z.S. Loud., for 1867, p. 723. 



1930. Gharopa diemenensis (Cox). Gabriel, P.R.S. Vic., XLIII, Pt. 1, (N.S.), 



p. 75. 

 1933. Thryasona diemenensis (Cox). Iredale, Rec. Aust. Mm, XIX, p. 54. 

 1937. Id., Iredale, Aust. Zool., VIII, Pt. 4, p. 318. 



Size of Type.— Maj. diam., 9-39; min., 8-37; alt., 3-55mm. 



Locality. — Mount William (Nat. Mus. Vic), collected by J. 

 Clark, (one specimen). 



Observations. — A shell with numerous riblets and many radiate 

 pale-red bands. It is common in Tasmania and on the islands in 

 Bass Strait. From the reference list, 1930, it is obvious the 

 generic location of the shell has proved a difficulty and the writer 

 concurs with Iredale in his treatment as above. This is the ortho- 

 type of the genus. 



Thryasona elenescens (Cox and Hedley). 

 1912. Flammidina elenescens Cox and Hedley, Mem. Nat. Mus. Melb., No. 4, 



p. 12, pi. 3, figs. 16-18. 

 1930. Charopa elenescens (Cox and Hedley). Gabriel, P.R.S. Vic., XLIII, 



pt, 1, (N.S.), p. 75. 

 1937. Thryanosa elenescens (Cox and Hedley). Iredale, Aust. Zool., VIII, 

 pt. 4, p. 319. 



Size of Type.— Maj. diam., 6-7; min., 5-4; alt., 2 -9mm. 

 Localities. — Merri Creek (Tenison Woods) ; Preston (C. L. 



