104 Proceedings of the Royal Society of Victoria. 



immediately below the suture on the body whorl ; the spots 

 when ascending the spire becoming gradually less distinct. 



Dimetisions of Type. — Length, 16 mm. ; breadth, 6 mm. ; 

 length of aperture, 9 mm. ; breadth of aperture, about 2 mm. 

 Other specimens range in length from 12 mm. to 19 mm. 



Locality. — Dredged alive five fathoms, off Phillip Island, 

 Western Port, Vty C. J. Gabriel. 



Observations. — Our most nearly related species is Cithara 

 compta, Adams and Angas, but it may be readily distinguished 

 from that species by its much narrower form, more lengthy spire, 

 and by its only having about half the number of plicse on the 

 penultimate whorl. We have named it C. cognata because of 

 this near relationship. 



Clathupella sexdentata, n. sp. 



Shell solid, narrowly fusiform, of six whorls, one and a half 

 smooth nuclear whorls, the first half turn being somewhat 

 obliquely enrolled to the general axis. Longitudinally plicate, 

 body whorl bearing twelve to fourteen well defined plicpe, 

 which terminate just below the suture ; this is well impressed. 

 About sixteen thread-like lirse encircling the body whorl, 

 strongly developed between the plicjfi but barely discernible 

 upon them. Aperture narrowly ovate. Sinus well defined, and 

 in juxtaposition to the suture. Outer lip varicosely thickened, 

 with about six elongated denticles within. Columella smooth. 

 Anterior channel open, slightly everted. 



White, the lirae being somewhat more opaque than the 

 remainder of the shell. 



Dimensions of Type. — Length, 6 mm.; breadth, 2-25 mm.; 

 length of aperture, 2 mm.; breadth, 1 mm. Larger examples 

 attain to a length of 7 mm. 



Z<?^«///)'. — Sorrento beach. Port Phillip (GatlifF). 



Observations. — In habit and size nearly related to C. modesta, 

 Angas, but the sculpture is finer and differs in character. 



Mitpomoppha flindersi, n. sp. 



Shell robustly fusiform, of five and a half whorls, one and a 

 half smooth nuclear whorls, the remainder densely spirally lirate. 



