258 PARTULA, SOCIETY IS. 



P. stolida will prove, if the type specimen can toe found, to 

 be a form of the otaheitana series from Tahiti. 



47. P. NITENS Pfeiffer. 



Shell subperf orate, conic-ovate, swollen, rather thin; longi- 

 tudinally very delicately striate; glossy, diaphanous; tawny- 

 brown, above obsoletely, at the base broadly banded with 

 buff. Spire conic, rather acute. Suture lightly impressed, 

 whitish. Whorls 5, a trifle convex, the last about equal to the 

 spire, rounded at the base. Aperture slightly oblique, acu- 

 minate-oval; peristome white, the right margin somewhat 

 spreading above, moderately expanded; 'Columellar margin 

 dilated, spreading somewhat over the perforation. Length 

 17, diam. 10 mm. ; aperture with peristome 10 mm. long, 4% 

 wide inside. (Pfr.). 



Habitat unknown (Cuming coll.). 



Partula nitens PFR., P. Z. S. 1854, p. 293 ; Monogr. iv, 513. 



48. P. PACIFICA Pfeiffer. 



Shell compressed-umbilieate, oblong-conic, rather thin, un- 

 der a lens very minutely striated spirally, slightly shining, 

 straw colored radiated with white and tawny lines. Spire 

 conic, the apex acute; suture deep, submarginate.' Whorls 

 5%, convex, the last a little shorter than the spire, somewhat 

 tapering basally. Columella receding above, vaulted over 

 the umbilicus. Aperture slightly oblique, truncate-oblong; 

 peristome white, spreading and reflexed. Length 22, diam. 

 10 mm.; aperture 9 x 41/2 mm. inside (Pfr.). 



Islands of the Pacific Ocean (Cuming coll.). 



Partula pacifica PFR., Proc. Zool. Soc. 1854, p. 154 ; Monogr. 

 iv, 509. 



1 1 Very closely related to P. radiolata, but differing in size, 

 the acute spire, convex whorls etc." (Pfr.). Dr. Hartman 

 has considered pacifica a variety of P. otaheitana. 



49. P. SIMPLARIA Morelet. PL 23, figs. 13, 14. 



Shell perforate, ovate-conic, rather ventricose, yellowish- 

 fulvous, thin, striolate, and delicately decussate towards the 



