72 AMERICAN JOURNAL 



Planaxis atra, Pease. Plate viii, fig. 4. 



T. elongato-ovata ; spira gracilis vix acuminata ; anfr. plano- 

 convexis, transversim confertissime, tenuiter impresso striatis ; 

 apertura late ovata ; labro intus incrassato, tenui lirato ; colu- 

 mella l^evis, infra arcuata, anfr. ultimo partim inferiorem sul- 

 cato ; canali angusto ; ater, sulcis basalis spacliceis, undique 

 setosa. 



Long. 8. Diam. 4J mill. 



Hab. Insl. Marquesas. 



Shell elongate-ovate ; spire slender, somewhat acuminate, 

 whorls planely convex, very finely and closely impressly striate 

 transversely, lower half of last whorl transversely grooved ; 

 aperture broadly ovate, lip thickened within and finely lirate ; 

 columella smooth, arcuate below ; canal very narrow ; black, 

 grooves chocolate brown, covered all over with very short, tine 

 bristles. 



RissoiNA balteata, Pease. 



T. elongata, gracilis ; anfr. convexis, longitudinaliter tenuiter 

 granoso-costatis, transversim tenui striatis ; anfr. ultimo ad 

 basin sulcato ; apertura elliptica, vix obliqua ; labro extus vari- 

 cose ; alba, fulva unifasciata. 



Long. 4. Diam. IJ mill. 



Hah. Lisl. Hawaii. 



Shell elongate, slender ; whorls longitudinally finely granosely 

 ribbed, transversely finely striate ; last whorl grooved at base ; 

 aperture elliptical, slightly oblique ; lip varicose on its outer 

 edge ; white, encircled by a single yellowish brown band. 



Bulla conspersa, Pease. Plate viii, fig. 9. 



T. ovata, solidiuscula perforata l?evis, striis incrementis longi- 

 tudinaliter tenuiter notata ; apertura superne contracta, infra 

 expansa ; labro posteriore vix producto ; alba, nigra, fuscaque 

 conspersa, versus basin fascea rubra cingulata, plerumque 

 obsoleta. 



Long. 27. Diam. 17 mill. 

 Hah. Insl. Marquesas. 



Shell ovate, rather solid, perforate, smooth, marked faintly 

 with longitudinal stride of growth ; aperture contracted above, 

 expanded below ; outer lip slightly produced posteriorly ; white, 

 promiscuously spotted and mottled with white, black and brown 

 of different shades, towards the base encircled with a single red 

 band, which is generally obsolete or altogether wanting. 



