96 AMERICAN JOURNAL 



lata, sulcata ; aperture vix flexuosa ; utrinque dilatata ; alba, ir- 

 regulariter rosaceo picta, interdum omnino pallide rosacea. 



Dimensions. — Long. 5, diam. 3| mill. 



Hab. — Paumotus. 



Shell ovately globose, elevated, shining, with an indistinct 

 dorsal impression, transversely strongly ribbed, ribs flexuous, 

 sometimes terminating abruptly on the sides or bifurcate, on the 

 extremities the ribs are of smaller size, slightly nodulous at the 

 dorsal groove ; base rounded ; columella angulate on its edge and 

 grooved its whole length ; aperture somewhat flexuous, widened 

 at each extremity ; extremities slightly produced ; white, irregu- 

 larly blotched with pink, or wholly of a light rose color. 



Remarks. — Allied to T. gemmula, Gld. The ribs are stronger, 

 less in number, rather more flexuous and noduled at the dorsal 

 groove, which together gives the shell a rough appearance. The 

 pink color is not so persistent as on that species ; most of the 

 specimens received being of a pure white. 



Amphiperas semistriata, Pease. — Plate 11, fig. 16. 



Description. — T. ovata, subgibbosa, extus intusque Candida, 

 nitida, transversim striata, striis undulatis, ad dorso evanidis ; 

 labro lirato, liris parvis ; columella rotundato-convexa, apertura 

 flexuosa, canali brevi. 



Dimensions. — Long. 12J, diam. 7| mill. 



Hab. — Insl. Ponape. 



Shell ovate, somewhat gibbous, white, shining, transversely 

 striated, striae undulated and obsolete on back; somewhat rough- 

 ened longitudinally by fine irregular stride ; ridges on outer lip 

 small, inner lip roundly convex on base ; right margin slightly 

 thickened ; aperture flexuous, canal very short. 



Remarks. — Allied to A. lactea, Sowb. 

 Pedicularia Pacifica, Pease. — Plate 11, figs. 17, 18. 



Description. — T. solidiuscula, oblonga, irregulari, in medio 

 contracta, radiatim striis elevatis, granulosis, ornata, striis con- 

 centricis decussata ; apice involuto, immerso, recto ; omnino ru- 

 bida, violacea, purpurea aut lutea. 



Dimensions. — Long. 8. mill. 



Hab. — Insl. Apaian. 



Shell rather solid, oblong, contracted at the middle, irregular 

 in shape ; radiately ornamented with elevated granulose striae, 



