Gray on Helicina 67 



6. Helicina costala. 



Testa depresso-ovata, lutea, spiraliter striato-costata, spira 

 conica, subtus subcouvexa ; peristomate incrassato subreflexo, 

 luteo, labiis subincrassatis. 



Shell, depressed ovate, yellow, spirally rib-striated, ribs convex, 

 those of the upper part broadest, becoming smaller and closer 

 near the columella, spire conical, acute, beneath subconvex, 

 peristome slightly thickened and somewhat reflected, yellow ; the 

 inner lip slightly thickened, columella scarcely callous ; axis- 3 ^, 

 diameter T 2 ^ of an inch. 



7. Helicina viridis. 



Testa depresso-ovata, angulata, carinata, viridis, nitida, laevis, 

 tenuis, carina albido-lutea, spira convexa ; subtus convexiuscula, 

 peristomate luteo, reflexo, subincrassato, labiis tenuibus; colu- 

 mella basi callosa, alba. 



Helicina viridis. Lamarck, Hist. vi. 103. 



Saint Domingo, Lamarck. Cuba, G. B. Soicerbg. Mus. 

 Sowerby, Goodall. 



Shell depressed ovate, angularly keeled, thin, polished, green, 

 the keel whitish yellow, spire convex; beneath rather convex, the 

 peristome scarcely thickened, reflected, yellow, inner lip scarcely 

 visible, very thin, base of the columella callous, white; axis JL, 

 diameter •!£ of an inch. 



This beautiful shell appears to be a perfect specimen of the 

 one described by Lamarck, but is much larger. 



** Peristome reflected, columella callous, aperture behind 

 subspinose or sinuafed, operculum simple. 



8. Helicina aurantia. 



Testa sub-depresso-ovata, subglobosa, laevis, albido rufescens, 

 unifasciata ; peristomate incrassato, reflexo, aurantio ; columella, 

 callosa ; aperturae angulo columellari subtuberculato. 



West Indies. 



Shell rather depressed ovate, somewhat globular, purplish 

 white, with a narrow reddish brown band a little behind the 

 centre, so as to revolve near the suture of the spire, and sometimes 

 a few faint reddish lines near the base of the columella, peristome 

 thickened, reflected, orange red, inner lip slightly thickened, the 



e2 



