OP CONCHOLOGY. 291 



8. Helicina Pacifica, Pease. 



Description. — T. conoidalis, lutea, solida, crassa, spiraliter- 

 striata, apice obtusa ; aafr. 4, plano-convexis, ultimo ad peri- 

 pheriam angiilato ; apertura subtriangularis ; labro crasso, vix 

 everso. 



Dimeiisions. — Diam. 6, alt. 4 mill. 



Shell conoidal, solid, thick, yellow, rarely reddish, spirally 

 finely striated ; apex obtuse ; whorls 4, flatly convex, angu- 

 lated at the periphery; aperture sub-triangular; lip thickened, 

 slightly everted ; columellar callosity moderate. 



