86 REPORT ON MOLLUSCA 



Lacuna macmurdensio, Hedley. 

 *Rissoa adarensis, Smith. 



* fraudulenta, Smith. 



* glacialis, Smith. 

 deserta, Smith. 



* gelida, Smith. 

 sp. 



*Capidus subcompressus, Pelseneer. 

 *Lovenella austrina, Hedley. 



* antarctica, Smith. 

 *Vermicidaria murrayi, Hedley. 



Turbonilla polaris, Hedley. 



Eulima convexa, Smith. 

 *Thesbia innocens, Smith. 

 *Trophon longstaffi, Smith. 



Trophon priestleyi, Hedley. 

 *Odostomiopsis major, Hedley. 



Retusa frigida, Hedley. 



Lamellibranchiata 



* Adacnarca nitens, Pelseneer. 

 *Philobrya limoides, Smith. 

 *Pecten colbecki, Smith. 

 *Lima hodgsoni, Smith. 

 *Thracia meridionalis, Smith. 

 *Cardita astartoides, Martens. 



* Kelly a nimrodiana, Hedley. 

 Tellimya antarctica, Smith. 



The novelties are described as follows : 



Turbonilla polaris, sp. nov. (Fig. 1) 



Shell long and slender, constricted between the whorls. Adult whorls eight, well 

 rounded. Protoconch glassy, not immersed, of one and a half whorls at right angles 

 to the adult shell, its length slightly exceeding the breadth of the subsequent whorl. 

 Sculpture : smooth, vertical, round-backed ribs, parted by smooth and rounded 

 furrows of equal breadth ; on the last whorl these amount to twenty. A strong basal 

 keel receives and ends these vertical ribs ; its upper edge is visible above the suture 

 on the spire. Base smooth. Aperture rhomboid, columella straight. Length, 3' 75 ; 

 breadth, 1 mm. 



A single specimen, slightly fractured at the aperture, which may not be adult. 

 The genus had not previously been traced so far south. 



