198 PARTULA, TAHITI. 



ing, with sculpture of fine growth-lines and minute, crowded, 

 waved spiral striae. Whorls 4%, moderately convex ; the last 

 half of the last whorl is noticeably compressed below the 

 periphery, the base being strongly convex. Aperture ovate, 

 .slightly oblique, usually pale brownish or fleshy inside. 

 Peristome white, reflexed, thickened within except near the 

 upper and columellar insertions. Columellar margin dilated 

 above. Parietal callus very thin. 



Length 15.5, diam. 9.1, length aperture 8.1 mm. 



Length 15.2, diam. 8.7, length aperture 8.7 mm. 



Length 17, diam. 9.7, length aperture 9.7 mm. 



Society Islands : Upper portions of the valleys of the south- 

 western part of Tahiti, a rare species, found on foliage. 

 (Garrett). 



Partula clara PEASE, Proc. Zool. Soc., 1864, p. 671 ; 1871, 

 p. 473. PFEIFFER, Mon. Hel., vi, p. 159. HARTMAN, Cat. 

 Partula, p. 11 ; Obs. Gen. Partula, Bull. Mus. Comp. ZooL, p. 

 181, vol. ix. GARRETT, Journ. A. N. S. Phila. ix, 1884, p. 56, 

 pi. 3, f. 75. 



This leaf -dweller is said by Garrett to be rare and in his 

 opinion approaching extinction. It has the figure of P. 

 annectens of Huaheine, but is much less delicate. P. attenuate 

 of Raiatea and Tahiti, is an allied species of much more 

 slender contour. 



Specimens from Pease and Garrett before one are either 

 nearly uniform in tint, or streaked obliquely with chestnut. 

 Pease in his original account has described a ' ' var., encircled 

 with a single line, or two or three." Garrett describes it as 

 '" corneous, sometimes with darker stripes, and more rarely 

 with one or two transverse chestnut bands. ' ' In being varie- 

 gated, P. clara is clearly less modified from the ancestral stock 

 than P. attenuata and annectens. 



17. P. ATTENUATA Pease. PI. 24, figs. 1, 2, 3, 4. 



The shell is openly perforate, slender, long-ovate, thin, 

 slightly pellucid pale yellowish-corneous, sometimes with a 

 faint reddish tint towards the apex; the suture transparent- 



