OF CONCHOLOGY. 187 



BUCCINID^. 



TORTIFUSUS, Conrad. 



Fusiform ; ribs revolving ; columella with a slight oblique 

 groove as in Sycotypus ; beak long, twisted; lip entire within. 



Lirosoina curvirostra. Conrad, Pioc. Acad. Nat. Sciences, 

 1864, p. 212. 



This shell differs from Lirosomam being without longitudinal 

 ribs or varices, and without a prominent fold on the columella, 

 which is very similar to that of Sycotypus with its oblique, 

 slight groove. It differs from the species of the latter genus in 

 its prominent equal revolving ribs, and want of lines on the 

 interior of the labrum. 



