LAND SHELLS OF VICTORIA 119 



whorl. Interstices microscopically reticulated. Sutures well defined. Um- 

 bilicus wide, nearly one third of diameter of shell, volutions well exposed, 

 with radial sculpture clearly discernible. Aperture oblique, narrowly lunate. 

 Peristome acute, simple. Inner lip not reflexed, parietal wall with a broad 

 shining glaze, concealing several riblets. 



Size of Type. — Maj. diam., 1-3; min., 1-1; alt., 0-5mm. 



Locality. — Michel Dene, Marysville under decaying timber 

 (Self). 



Observations. — This tiny species is the smallest of our Vic- 

 torian Charopid forms and is easily separable by its line sculpture 

 and diminutive size. 



Type in the collections of the National Museum of Victoria. 

 Reg. No. F. 1062. 



Gharopa lakesentraneiencia, sp. nov. (PI. 10, Fig. 6.) 



Shell minute, white, thin, fragile, subdiscoidal, spire just slightly elevated, 

 umbilicated. Whorls, including protoconch, about four and one half, rounded. 

 Sculpture consisting of subequidistant, radial, fine, slightly-curved riblets, 

 about sixty on the last whorl. Interstices with minute growth lines averag- 

 ing eight to ten, reticulated by fine concentric stria?. Last whorl descending 

 below the level of the penultimate whorl. Sutures impressed. Umbilicus about 

 one quarter of shell's greatest diameter, volutions well exposed with sculpture 

 clearly seen even to apex. Aperture lunate. Peristome simple, acute. Inner 

 lip not reflexed, callus glaze concealing about four of the radial riblets. 



Size of Type.— Maj. diam., 2-3; min., 20; alt., l-2mm. 



Localities — Type. End of North Arm Lakes Entrance under 

 decaying timber (Self) ; Jemmy's Point, Lakes Entrance (Self). 



Observations. — A delicate form which could not be confused 

 with any known Victorian species. Type in the collections of 

 the National Museum of Victoria. Reg. No. F. 1063. 



Charopa problematiea sp. nov. (PI. 10, Fig. 7.) 



Shell small, thin, discoid, umbilicated, closely radiately ribbed. Colour 

 brown, with irregularly-spaced white streaks extending to the umbilicus. Whorls 

 including protoconch about four and one half, rounded, slowly and regularly 

 increasing, the ultimate very slightly descending, almost on the plane of the 

 shell. Sutures well defined. The shell is sculptured with radial ribs to the 

 number of about one bunded and fifty on the last whorl. Interstices with very 

 fine radial riblets averaging about six. Umbilicus wide, broadly conical, about 

 one third of the shell's greatest diameter, volutions with radial sculpture 

 clearly discernible. Aperture roundly lunate. Peristome thin, sharp. Inner 

 lip not reflexed; callus glaze broad and thin, concealing several ribs. 



Size of Type.— Maj. diam., 2-2; min., 2 0; alt., 0-8mm. 



Loealit if. —Type. Fernshaw (W. Kershaw). 



Observations. — A pretty little species comparable with C. 

 tantarensis (Petterd) from which it may be distinguished by its 

 flatness and smaller size. Reference is here made that this species 



