S.A. NAt., 
VOJv. X\ IJ1, No 
2. By T“M 
Divellomelon hillieri. PI. II, fig. 23. 
1910. Thersites {Glyptorhagada) hillieri Smith, Proc. Malac. 
Soc. (Lond.), \ ol. IX, p.26, fig. , March 31. 
Herinaimsburg, South Central Australia (Hillier). 
fi'aiiiily Rhytididae. 
The snails of this family are carnivorous and are very easily 
recognised when living, while the shells arc sometimes rather 
notably different. Many Australian forms have the upper sur- 
face rudely plicate, the under surface smooth, the whorls few, 
rather rapidly increasing on the same plane, that is, the spire 
fiattened, the mouth large, oblique, wider than high, Ups thin, 
umbilicus open and generally wide. 
Genus Strangesta. 
1933. Strangesta Iredalc, Rec, Austr. Mus., Vul. XIX, p.48, 
August 2. 
Orthotype Helix leicliardti Cox. 
d'his genus apparenth' occurs all along the East Coast of 
Australia and into eastern South Australia where apparently two 
si'ecies occur which may later be referred to two distinct groups. 
The general description above given applies to this genus. 
Strangesta gawleri. PI. II, fig. 7. 
1872, Helix (Zonites) ts,azvleri Brazier, Proc. Zool. Soc. (Lend.), 
1872, p.618, Xovember 3. Mt. Lofty Ranges, South 
Australia. 
1903. Rhytida {Eurhytida) gazderi Kobelt, Syst. Conch. Cab., 
Mart. & Chemn.), ed. Kuster, Bd. I, Abth. 12B, (heft. 
CLXXX, 486°licf.), Agnatha, p.37, pi. 7, figs. 12-14, 
(dated 26.XII.1902). 
1932. Rhytida gazderi Cotton & Godfrey, South Austr. Nat., 
Vol. XIII, p.l76, pi. 3, fig. 20, '9\ugusP'— September 30. 
Strangesta tumidula sp. nov. 
'Pwo small specimens from Robe agree with others sent to 
the Australian Museum many years ago by Professor Tate from 
the Mt. Gambler district under the above specific name. A MS. 
description therewith compared them with the Tasmanian ruga, 
but they seem more related to gazvleri from which they may be 
distinguished by their greater clevatitm and finer sculpture. The 
measurement of Tate's type is “Max. diain. 17.5, min. 14.5, 
licight II mm.” 
