188G.] NATURAL SCIENCES OP PHILADELPHiA. 83 



According to the observations of Capt. Brazier, P. pellucida 

 and P. Coxi are arboreal species. My examples were pronounced 

 Goxi by Mr. Angas ; it is a larger shell than P. pellucida. 



P. Woodlarkiana, nobis. Plate II, fig. 8. 



Shell dextral, ovate, thin and translucent ; bodj'-whorl inflated ; 

 "vvhorls 5, rounded, suture impressed, lines of growth decussated 

 by numerous waved spiral strire, spire short, columella slightly 

 arcuate, wide and smooth, compressl}^ umbilicate, aperture round 

 ovate, lip concave, white and moderately reflected ; color yel- 

 lowish, apex very pale rose. Length 19 mill., diameter 11 mill.; 

 length of aperture 9 mill., diameter 6 mill. 



Hah. Woodlark Inland near New Guinea (Capt. Brazier). 



P. hastula, nobis. Plate IT, fig. 9. 



Shell dextral, elongate, oval, hastulate, thin and pellucid ; 

 spire acute, half the length; whorls 5, slightly rounded, suture 

 moderately impressed. Oblique strife prominent, and crossed 

 by numerous minute spiral lines. Umbilicus compressed, aper- 

 ture oval, more or less oblique, margins of the peritreme con- 

 nected by a very thin deposit, lip white, reflected and concave. 

 Color 3^ellowish. Length 19 mill., diameter 9 mill.; length of 

 aperture 8 mill., diameter 4 mill. 



Hah. Erromaago Island, Solomon Islands. 



Ohs. I am indebted to Captain Brazier for several examples. 

 He informs me that Mr. Pease considered it identical with P. 

 spadicea, Rve., from which it is certainly distinct ; it is more 

 elongate and thinner than any known species from this island. 



P. eburnea, nobis. Plate II, fig. 10. 



Shell dextral, ovate, very elongate, solid. Spire half the 

 length ; whorls 5^, oblique striae coarse, spiral strise obsolete, 

 aperture a wide oval, more or less oblique ; umbilicus compressed. 

 Columella wide above, lip reflected, white and flat, margins of 

 the peritreme connected by callus. Color ivory-white. In fresh 

 examples sometimes the whole shell is tinged with pale rose. 

 Length 26 mill., diameter 13 mill.; length of aperture 11 mill., 

 diameter 6 mill. Hab. unknown. 



Ohs. Captain Brazier sent me two examples of this shell, 

 given him by a friend ; it is larger and more solid than Pfeifferi^ 

 Crosse. 



