PARTULA, SOCIETY ISLANDS. 177 



oblique, more than half the total length, broadly ovate. The 

 peristome is thin and expanded throughout, whitish- corneous. 

 Outer lip equably arched, basal margin more strongly arcuate. 

 Columellar margin reflexed and dilated above. Columella 

 concave, bending towards the right above. Parietal film 

 hardly perceptible. 



Length 13, diam. 8.1, length of aperture 7.7 mm. 



Length 12, diam. 8, length of aperture 7.5 mm. 



Huaheine: "The metropolis of this very fragile species is 

 in the upper portion of a mountain ravine, on the west coast 

 of Huaheine, where it is rather common on the leaves of low 

 shrubs and ferns. It occurs much more rarely in a neighbor- 

 ing valley south of its specific center. Mr. Pease's habitat 

 1 Tahiti, ' as given in his list of Polynesian land shells, is 

 decidedly wrong." (Garrett). 



Bulimus argutus PEASE, Proc. Zool. Soc., 1864, p. 670 ; 1871, 

 p. 473. PFEIFFER, Mon. Hel., vi, p. 46. Partula arguta 

 SCHMELTZ, Cat. Mus. Godef?., v, p. 92. MARTENS and LANGK., 

 Don. Bismarkianum, 1871, p. 55, pi. 3, fig. 7. HARTMAN, 

 Cat. Part, p. 11 (with woodcut) ; Obs, Gen. Part., Bull. Mus. 

 Com. Zool., ix, p. 179. GARRETT, Journ. A. N. S. Phila. ix, 

 1884, p. 62, pi. 3, f. 57. 



Though referred by Pease to the genus Bulimus, it is, never- 

 theless, a true Partula. "The animal, which is viviparous, 

 has very long, slender, ocular tentacles, long lance-pointed 

 foot, and that portion of the animal occupying the whorls 

 of the translucent shells is beautifully maculated with black 

 and white spots on grayish yellow ground. The shell, which 

 is very uniform in all its specific characters, may be readily 

 distinguished by its very thin pellucid texture, ovate form, 

 abbreviated spire, turgid body-whorl, uniform pale yellow- 

 ish horn-color, thin, slightly expanded lip and large simple 

 aperture." (Garrett). 



Pease gave the following description. Specimens received 

 from him are before me. "B. testa ovata, tenuissima pel- 

 lu<jida, membranacea, nitida, anguste umbilicata; anfr. iv, 

 convexis, ultimo ventricoso, suturis impressis; apertura 



