MOLLUSCA 5 



Rissoa adarensis, Smith 



Smith, Hep. Nat. Antarctic Exped., Gast., 1907, p. 8, Plate II., Fig. 2. 

 Six shells from ten to twenty fathoms. 



Rissoa fraudulenta, Smith 



Smith, Rep. Nat. Antarctic Exped., Gast., 19Wrp- 9, Plate II., Fig. 3. 

 One shell from ten to twenty fathoms. 



Rissoa gelida, Smith 



Smith, Rep. Nat. Antarctic Exped., Gast., 1907, p. 9, Plate II., Fig. 5. 

 Alive, twenty specimens from ten to twenty fathoms. 



Rissoa glacialis, Smith 



Smith, Hep. Nat. Antarctic Exped., Gast., 1907, p. 9, Plate II, Fig. 4. 

 Two shells from ten to twenty fathoms. 



Capidus subco'inpressus, Pelseneer 



Pelseneer, Result voy. Belgica, Moll., 1903, p. 20, Plate V., Figs. 52-54. 

 One alive from " Bay, 2/09." This is an addition to the fauna of this 

 quadrant of Antarctica. 



Lovenella antarctica, Smith 



Smith, Rep. Nat. Antarctic Exped., Gast., 1907, p. 10, Plate II., Figs. G-G. 

 A single shell. (Loc. Sound, twenty-five to fifty fathoms, " 6/7/08 ") 



Lovenella austrina, sp. nov. (Plate I., Fig. 7) 



Shell small elongate-conical, thin and semi-transparent. Colour pale buff. 

 Whorls ten, including a smooth helicoid protoconch of a whorl and a half. 

 Sculpture : three slender spiral keels on each whorl, of which one margins the lower 

 suture, one is peripheral, and one intermediate ; on the last whorl an incipient 

 thread appears above the periphery and another on the base. These are beaded 

 by the passage of fine numerous perpendicular irregular riblets which also cancellate 

 the interspaces. Aperture subcircular, angled above, notched below by a very 

 short perpendicular canal, columella thickened, arched, outer lip thin. Length, 8 ; 

 breadth, 2 -5 mm. 



Twenty specimens alive from ten to twenty fathoms off Cape Royds, June 1908. 



In size and shape closely resembling L. antarctica, but differing by fewer more 

 delicate spirals and thinner shell. Cerithium charcoti, Lamy,* from Booth Wandel 

 * Lamy, Exped. Charcot, Moll., 1900, p. ], Plate I., Fig. 1. 



