BY C. HEDLEY. 469 1 



vertical, nearly straight, outer lip protected by a massive project- 

 ing varix. Length, 2-75; breadth, T7 mm. 



Hah.— Middle Harbour (the late Mrs. C. T. Starkey). Rare. 



Type to be presented to the Australian Museum. 



Since drawing up the above description, I have found numerous 

 specimens in dredgings taken by Mr. W. L. May and myself, in 

 100 fathoms, seven miles east of Cape Pillar, Tasmania. 



RlSSOA PROCINCTA, n.Sp. 



(Plate x., fig.34.) 



Shell small, thin, glossy, conical, perforate. Whorls four,, 

 rounded and deeply constricted at the sutures. Colour: on each 

 whorl two spiral alternating bands of cream and pale brown. 

 Sculpture, faint growth-lines. Aperture pyriform, rounded below, 

 angled above, outer lip simple, inner reflected. Length, 2*55; 

 breadth, 1*45 mm. 



Hab. — Middle Harbour (Mrs. Starkey; one specimen). 



Type to be presented to the Australian Museum. 



RlSSOA IMBREX, n.Sp. 



(Plate x., fig.33.) 



Shell elongate-conic, rather solid, perforate, protoconch turbi- 

 nate, suture channelled, each whorl overhanging the next in 

 imitation of a cone-in-cone structure. Colour dull white. Sculp- 

 ture: along the periphery of each whorl runs a deep groove, 

 bordered by a ridge on each side. On the base are two or three 

 raised lines. With these exceptions the shell is smooth. Aper- 

 ture almost entire, roundly oval, broadly reflected throughout, 

 the reflection notched on the right by the peripheral groove, and 

 on the left extended over a narrow axial perforation. Length, 

 3*6; breadth, 16 mm. 



Hob.— Middle Harbour (the late Mrs. C. T. Starkey; a few- 

 specimens). 



Type to be presented to the Australian Museum. 



