292 AMERICAN JOURNAL 



plane, marginate at the suture; aperture oblong ovate; columella 

 slightly callous. 



Odostomia eosacea, Pease. Plate 24, fig. 19. 



Description. — T. oblonga, cylindracea, solicla, laevigata, nitida ; 

 anfr. 5, plano-convexis, obsolete marginatis ; apertura elongato- 

 ovata ; rosacea, ad basin pallida aut alba, maculis albis aut 

 lineis, infra suturam ornata. 



Dimensions. — Long. 7. diam. 2 mill. 



Locality. — Paumotus. 



Shell oblong, cylindrical, solid, smooth, shining; whorls 

 five, flatly convex, indistinctly marginated ; aperture oblong 

 ovate ; rose color, pale or white at base, ornamented with a row 

 of longitudinal spots or lines beneath the suture. 



Odostomia gracilis. Pease. Plate 24, fig. 20. 



Description. — T. gracilis, elongata, tenui, subturrita, trans- 

 versim tenui striata, alba; anfr. 6, plano-convexis, ad suturam 

 acute angulatis ; apertura elongato-ovata. 



Dimensions. — Long. 4, diam. 1^ mill. 



Locality. — Hawaii. 



Shell slender, thin, elongate, somewhat turrited, finely striate 

 transversely ; whorls six, flatly convex, acutely angulated at 

 the suture ; aperture elongate ovate. 



Odostomia debilis. Pease. Plate 24, fig. 21. 



Description. — T. gracilis, elongata, lanceata, solidiiiscula, 

 longitudinaliter striata, transversim minutissime striata ; anfr. 

 9, planis, ad suturam acute angulata ; apertura oblongo-ovalis ; 

 spira rosea, infra albida. 



Dimensions. — Long. 9, diam. 2 mill. 



Locality. — Insl. Howland. 



Shell slender, elongate, lance-shaped, rather thick, longitudi- 

 nally striate and also transversely very minutely ; whorls nine, 

 fiat, acutely angulate at the sutures ; aperture oblong oval ; 

 spire rose color, lower part and base whitish. 



The above are the first of the genus described from the 

 Pacific Islands. They are rare, though no doubt numerous in 

 species. 



