164 PHASIAKELLA. 



have nuinerous teeth ; if the individual teeth were reduced iu size in 

 the proportion that the shell is, they would be too minute to fulfil 

 their function as efficient rasps. 



The Phasianellinm have been monographed by 



Philippi, in Kiister's Conchylien Cabinet, 1853. 



Reeve, iu the Conchologia Iconica, 1862. 



Fischer, in Kiener's Coquilles Vivants, 1873. 



Sowerby, in the Thesaurus Conchyliorum, 1884. 



Philippi's work is perhaps the best; but lie describes many species 

 characterized only by the color-pattern. Reeve unites all the 

 smaller and more difficult species, and redescribes most of the larger 

 several times. Fischer's work includes only a few species, but these 

 are well described and beautifully figured. 

 Ke%j to subgenera. 

 Columella smooth, arcuate, not dentate, shell ovate, elongated, im- 

 perforate; radula with median teeth. 



Large species; head with frontal lobes. . . Phasianella, 

 Small species; head without frontal lobes. . . Tricolia. 



Shell as in Phasianella; radula without median teeth. Orthomesus. 

 Shell subglobular, small, imperforate ; aj^erture large. Chromotis. 

 Shell minute, globose, umbilicate. .... Eucosmia. 

 Columella with a strong curved denticle. . . . Alcyna. 



Genus Phasianella Lam., 1804. 

 Shell bulimiform or oval; columella smooth, concave. Type, 

 P. australis Gmel. 



Eutroiyia (Leach) Gray is a synonym. 



Subgenus Phasianella s. str. 

 Shell rather large, bulimiform, imperforate; epipodial line bearing 

 cirrhi; head with pectinated frontal lobes. 



S. African and Australian Provinces. 



P. austealis Gmelin, 1788. PI. 37, figs. 22-28. PI. 38, fig. 46. 



Shell large, elongated, rather thin, pointed-ovate ; spire conical, 

 elevated ; whorls 7-8, somewhat convex, slightly flattened below the 

 sutures; aperture long-ovate, somewhat pyriform, usually less than 

 half the total length of shell ; outer lip thin ; columella with more 

 or less white shining callus ; surface " variously longitudinally cloud- 



