156 AMERICAN JOURNAL 



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convexis, ultimo interdum vix inflato ; sutura impressa ; aper- 

 tura verticalis, oblongo-ovalis ; labro late et planireflexo ad mar- 

 ginum interiorem ruguloso ; columella superne vix dilatata ; 

 albido, obscure longitudinaliter strigata, epidermide flavida 

 induta. 



Dimensions. — Long 21, diam. 12 mill. 



Hab. — Insl. Marquesas. 



Shell conical, ovate, rather thin, narrowly umbilicate, trans- 

 versely finely and closely wrinkled striate ; whorls 5, flatly con- 

 vex, the last sometimes slightly swollen ; suture impressed ; 

 aperture vertical, oblong oval; lip broadly and flatly reflected, 

 its inner edges generally roughened ; columella very slightly 

 dilated above ; whitish, faintly striped longitudinally, covered 

 with a thin yellowish epidermis. 



.Remarks. — The only other species of this genus, described 

 from the above locality are lilacina, Pfr., spadicea, Rve., Gany- 

 medes, Pfr. The latter has been wrongly credited to the Tahi- 

 tian Islands. They are all of one type, simple in color, narrowly 

 umbilicate, and the lip evenly and broadly reflected. 



Helicina colorata, Pse. Plate 12, fig. 9. 



Description. — T. solida, crassa, orbiculata, depressa, oblique 

 tenui striata, concentrice tenuiter striata ; spire obtusa ; anfr. 

 4, plano-convexis, ultimo ad peripheriam carinato, infra margi- 

 nato, callus basalis tenuis, flavidus; labro subincrassato ; aper- 

 tura late lunaris ; omnino straminea aut rubra, interdum fasci- 

 ata. 



Dimensions. — Diam. 5, alt. 3 mill. 



Hab. — Isl. Annaa. 



Shell solid, thick, orbicular, depressed, radiately obliquely 

 very finely striate, and concentrically rather remotely striate ; 

 spire obtuse ; whorls 4, flatly convex, the last carinate at the 

 periphery, margined beneath ; basal callus thin, yellow ; lip 

 slightly thickened; aperture broadly lunate; color various, 

 usually different shades of yellow or red, sometimes banded 

 with the same colors and white. 



Remarks. — Although the above species varies much in color, 

 that of the basal callosity is persistent, even on those that are 

 red or pink. 



Helicina parvula, Pse. Plate 12, fig. 10. 



Description. — T. tenuiscula, orbicularis, oblique tenui striata ; 

 spira elevata ; sutura bene impressa ; anfr. 4, convexis, ultimo 



