Neiv Species of Victorian Molhisca. 181 



The shell is of a uniform liglit l)fo\vn colour. 



Dimensions. — Length, 4 mm.; breadth, To mm.; length of 

 aperture, 1-75 mm.; breadth of aperture, -5 mm. 



Locality. — Off Rhyll, Phillip Island, Western Port, obtained 

 from shell-sand dredgings (J. H. Gatliff). 



Type in Mr. Gatliff 's collection. 



Terebra inconspicua, sp. nov. (PI. IX., Fig. 2). 



Shell small, not solid, of 9i\ whorls, regularly and tapering. Apex 

 blunt. Nucleus of 1| smooth whorls. Whorls telescopically 

 arranged, slightly convex with numerous faint ribs crossing the 

 whorls at almost regular intervals, the only other sculpture being 

 faint transverse striae, visible under the lens. Suture well- 

 defined, and on account of the overlapping of the whorl a slight 

 shouldering is caused. Colour sordid white, irregularly, longitu- 

 dinally streaked with brown. 



Dimensions. — Length, 12 mm., greatest breadth, 3'5 mm. 



Locality. — Dredged five to six fathoms off Rhyll, Phillip 

 Island, Western Port (J. H. Gatliff). 



Observations. — This shell may be readily distinguished, owing 

 to its slight sculptural characters. 



Type in Mr. Gatliff 's collection. 



Leptothypa apenacea, sp. nov. (PI. IX., Fig. 3). 



Shell small, turbinate, solid, umbilicate, whorls four to five 

 convex, the two nuclear whorls smooth, the rest spirally ridged, 

 these ridges being well-developed and numbering about eleven to 

 thirteen around the mouth on the last whorl ; space between the 

 ridges wider than the ridges, aperture circular. Umbilicus deep, 

 and extends at the back of the columella to the anterior of the 

 aperture, and is occasionally margined by a strong thread. 

 Base round. Lip thick. Sordid white. 



Dimensions. — Diameter, 2 mm. ; height, 2 mm. 



Locality. — Dredged 5 to 6 fathoms off Rhyll, Phillip Island, 

 Western Port (J. H. Gatliff). 



Type in Mr. Gatliff''s collection. 



