BIOLOGY OF SNOWY RIVER AREA 101 



130 on the last whorl. Interstices possessing tine growth-lines, 

 reticulated by microscopic close spiral stride. Sutures well im- 

 pressed. Aperture slightly oblique, rotundly lunar. Peristome 

 thin, sharp. Umbilicus open, about one fourth of shell's greatest 

 diameter, exposing all the whorls, and on which may be clearly 

 seen the radial and microscopic spiral sculpture. Inner lip with 

 a white callus, concealing many riblets. Animal white with a 

 dark line running from the tentacles to the mantle edge. 



Size of Type. — Maj. diam., 3-3; niin., 2-8; alt, l-8mm. 



Turn Locality. — Honeysuckle Track, Gelantrpv. 



Observations. — A small shell, with a near ally in C. ricei 

 Brazier. The flatness and coarser sculpture of the novelty immedi- 

 ately separates the two forms. 



This species is dedicated to Mr. G. W. Brazenor to whom we 

 are indebted for help in held collecting and photographs. 



Type Reg. No. F 1682 A and 5 Paratypes (F 1682) in collection 

 of National Museum of Victoria; 1 Paratype in collection of C. 

 J. Gabriel. 



Charopa snowyensis sj>. nov. (PL 13, upper; Fig. 2). 



Shell small, white, covered with light brown epidermis, sub- 

 discoidal, umbilicated ; spire nearly flat, slightly raised above the 

 last whorl. Whorls 1A sculptured with tine radial ribs, number- 

 ing about 50 on the ultimate whorl which is slightly descending. 

 Interstices striated with minute growth-lines, averaging about 

 fifteen and crossed by spiral stria?, the latter distinctly visible 

 above and below. Sutures Lnpressed, Aperture a little oblique, 

 roundly lunate. Peristome simple, thin. Several ribs in front 

 of aperture covered by a white callus glaze. Umbilicus wide, 

 about one fourth of shell's greatest diameter and showing all the 

 volutions. 



Size of Type. — Ma.j. diam., 3 2; niin., 2 8; all., 16mm. 



Type Locality. — Snowy River (Moon's Crossing) Victoria. 



Observations. — An interesting shell which may be compared 

 with the new species C. jemmysensis (these Memoirs ante p. ). 

 However, the consistently higher spire and narrower umbilicus 

 together with the distinct epidermis of the species are more than 

 sufficient grounds for separation. 



Type Reg. No. F 1673 A and 5 Paratypes F 1(57:5 B and (J in col- 

 lection of National Museum of Victoria; 2 Paratypes in collec- 

 tions of C. J. Gabriel. 



Localities. — 22 specimens (F1673). Snowy River (Moon's 

 Crossing) ; 2 specimens (F 1687) Suggan Buggan River. 



L 



