1890.] NATURAL SCIENCES OF PIIILADKLI'IIIA. 285 



Obs. This shell is about the size of ParUda Coxl Angas. 

 Received from Mr. Kubaiy through Dr. ]M("»lleii(lorff of JNIanilla. 

 Melania rubricata, Nobis. I'l. Ill, fig. 4. 



Shell ovate, very attenuate, decollate. Whorls 11 or more, tur- 

 reted, flat, spirally striate. Color reddish, lighter below the suture, 

 with dai'ker red flaramules in the light ])art. A])erture ovate, 

 rounded at base, opercle absent. 



Height 35 to 55 mm., diam. 6 to 8 mm. 



Hab. Vanna Lava Island, Banks Islands, New Hebrides. 



Obs. Mr. Rossiter possesses several examples from the locality. 

 Helicina albescens, Nobis. Pi. Ill, fig. 5. 



Shell orbicular, thin, smooth and translucent, conoid, apex acute, 

 base convex, whorls 5, compressed, rounded, irregularly and ob- 

 liquely striated by fine lines, which are sparsely crossed by spiral 

 ones, suture distinctly impressed, first 1} embryonic whorls, irregu- 

 larly foveate, base roundly convex. Umbilicus covei'ed by a thin, 

 white callus, semicircularly sulcata, columella short, aperture very 

 oblique, semi-orbicular, with a faint reddish border within, lip re-, 

 fleeted, pale yellow, finely punctate, narrower Avhere it joins the 

 short columella. Color white, opercle absent. 



Height 5j mm., width 7 mm. ; height of aperture 3] mm., diam. 

 of aperture 21 mm. 



Hab. Segou Island. E. L. Layard, Esq. 

 Helicina hyalina, Nobis. PI. Ill, fig. 0. 



Shell globose, orbicular, depressedly conoid, apex obtuse, thin and 

 hyaline. Whorls 4-2, compressly rounded and finely striate, suture 

 impressed, convex beneath, with the umbilical region covered by a 

 very thin callus, the base of which is semicircularly sulcate, aper- 

 ture semi-orbicular, lip slightly reflected. Color light amber, oper- 

 cle semi-orbicular, very thin, with a thickened rim at the outer 

 margin. 



Height 4 mm., diam. 6 mm.; height of aperture 21 mm., diam. 

 of aperture 2 mm. 



Hab. Mount Halcone, Mindoro, Philippine Islands. 

 B. Schmacker, Esq. 

 Helicina virido-colare, Nobis. PI. Ill, fig. 7. 



Shell globose, orbicular, depressly conoid, thin and translucent, 

 apex obtuse, whorls 4j, roundly compressed, with numerous fine 

 oblique stride, suture impres.sed, last whorl rounded, base convex, 



