OF CONCHOLOGY. 21 



terranean, as Mr. Reeve states, and has been classed by Mr. 

 Weinkauff as a synonym of that species. The figure in Con. 

 Icon, was apparently taken from an immature specimen. 

 Whether that determination is correct or not, the Australian 

 species is quite distinct as to shape, sculpture and color. No 

 comparison is necessary. I describe it as 



Tritonidea australis, Pease. 



T. assimilis, Ang. non Rve., Proc. Zool. Soc, 1867, p. 187. 



T. fusiformi, elongata, longitudinaliter leviter costata, trans- 

 versim regulariter sulcata ; spira elongata ; anfr. 6, convexo 

 rotundata, ultimo ad basin vix recurvo; apertura angusta, labro 

 leviter crenulato, intus vix lirato ; columella subelevato lami- 

 nata, dentato lirata ; castaneo aut purpurascentis fusca, fascia 

 lata albida cingulata, interdum irregulariter maculata, sulcis 

 rufescentis. 



Long. 14, diam. 6 mill. 



Shell fusiform, elongate, somewhat cylindrical in shape, slight- 

 ly ribbed longitudinally, ribs rounded, i»-ll in number, trans- 

 versely grooved tbroughout, the interstices forming narrow rounded 

 ribs ; spire elongate, its whorls convexly rounded ; whorls six, the 

 last slightly recurved at base ; aperture narrow, outer lip finely 

 crenulate on its edge, faintly ridged within ; columella slightly 

 elevately laminate, dentately ridged ; color dark purplish or red- 

 dish brown, encircled by an irregular broad whitish band, or 

 irregularly spotted, grooves reddish. 



COLUMBELLA DERMESTOIDES, Lam. 



The above is credited to Australia by Mr. Angas, in Proc. 

 Zool. Soc, 1867, p. 195. 



He remarks that the Australian form " is certainly conspecific 

 with C. dermestoides of Kiener, which species is recorded as 

 coming from the West Indies." 



The C. dermestoides, of Kiener, is identically the same as 

 that described by Lamarck, and both authors assign it to the 

 Mediterranean. 



It is a small variety of Nassa cornieuluin, (Olivi) which should 

 be classed under genus Amycla, H. and A. Ad., as the colum- 

 ella is smooth and truncate at base. The Australian species 

 belongs to another genus, being a true ColumbeUa. It also 

 differs from the Mediterranean form in other respects. 



The species figured and described in Con. Icon, under the 

 above name from the West Indies is distinct, and approaches 

 more nearly to 0. interrujrta, Aug., described from South Aus- 

 tralia, in Proc. Zool. Soc, 1865. 



