1885.] NATURAL SCIENCES OF PHILADELPHIA. 203 



DESCRIPTIONS OF NEW SPECIES OF PARTULA AND A SYNONYMIC ' 

 CATALOGUE OF THE GENUS. 



BY WM. D. HARTMAN, M. D. 



Partula Magdalinae, nobis. 



Shell short, conic, dextral, inflated, thin and fragile; spire 

 short, half the length ; umbilicus somewhat compressed ; whorls 

 H, apical whorls veiy thin, rounded and sub-transparent, with 

 the embiyonic lines of fovea deeply impressed, which 

 ^L become numerous waved spiral stria;, decussated by fine 

 ^K^A. oblique lines of growth, causing a granulated appear- 

 ^^SK\ ance of the surface; body-whorl much inflated, with the 



^^5^ basal half thickened and rounded ; columella wide at 

 the base, and nodulose; color white, epidermis thin, 

 pale green, in bands on the basal half; aperture perpendicular, 

 large, rounded ovate, lip thin, white, concave and reflected. 



Length 10, width 11 mill.; aperture, length 8, width 5 mill. 



Hab. — Magdalena Island, Marquesas. 



Obs. — I am indebted to Mr. Andrew Garrett, of Huaheine, for 

 four examples of this shell ; it is about the size of P. decussatula, 

 but more inflated, thinner, with a short, and less acute spire. 

 Like P. Ganymedes and P. inflata, from Marquesas, the basal half 

 of the shell is thicker and more opaque than the superior part. 



Partula bellula, nobis. 



Shell abbreviately ovate, dextral, umbilicate, thin, translucent ; 

 whorls 5, rounded, suture impressed, apex acute, spiral 

 striaa decussated by coarse oblique lines of growth, 

 giving the surface a waved appearance ; aperture per- 

 pendicular, round-ovate, columella wide at the base, lip 

 thin, white, reflected ; color pale straw, with the apex 

 very pale rose. 

 Length 15, width 9 mill.; aperture, length 7, width 4 mill. 

 Hab. — Wapo Island, Marquesas. 



Obs. — Mr. A. Garrett collected one example of this pretty 

 species on Wapo, at an altitude of 2500 feet above sea-level. A 

 similar shell, sent by him to the Museum Godeflroy, was found at 

 Dominique at the same altitude. 



