New Species of Victorian MoUusca. 105 



lirae numbering from five to seven on the spire whorls, and about 

 twenty on the body whorl, and being under the lens transversely 

 striate. 



Aperture narrowly lanceolate. Outer lip acute, smooth 

 within. Columella slightly arcuate, bearing two oblique plaits 

 about the centre. 



White, there is occasionally an interrupted light brown band 

 on the shoulder of the body whorl, and sometimes the encircling 

 lirse are finely dotted with light yellowish-brown ; extreme apex 

 usually tinted with purplish-brown. 



Dime/isions of Type. — Length, 6 mm.; width, 3 mm.; length 

 of aperture, 3 mm. ; width, about 1 mm. 



Locality. — Flinders beach, Western Port (Gatlifi"). 



Observatious. — This shell is nearly allied to M. volva, Sowerby, 

 from Port Elizabeth, " Marine Shells of South Africa," page 7, 

 Plate 1, Fig. 16, and in South Australia, has been identified as 

 such ; our species is more robust in form, and the lirte are about 

 twice as numerous as those indicated by Sowerby's figure. This 

 is the first time the genus has been recorded as being on our 

 coast. 



Liotia hedleyi, n. sp. 



Shell discoid, whorls three and a half, the body whorl is 

 angulated by the uppermost of three prominent spiral keels, 

 which are crossed by about twenty well-defined transverse 

 ridges, causing distinct serration of the keel, from an apical 

 aspect ; these ridges are directed obliquely backwards, only 

 slightly noticeable between the suture and first keel, more 

 distinct between that and the second, and continuing so to the 

 umbilical keel, and the interstices are under the lens finely 

 striated, striaj running parallel to the ridges ; these fine striae 

 cause interference with the light, giving rise to iridescence when 

 viewed obliquely. 



Aperture circular and continuous, lip broadly margined, the 

 margin being sculptured in a manner similar to the other portion 

 of the body whorl. 



Widely umbilicated to the spire, umbilicus carinated, area 

 between the carination and keel concave. 



Of a uniform cream colour, slightly tinted with brown. 



