PARTULA, TAHITI. 193 



cal patch.; whorls of the spire showing two dark bands on-a 

 light or flesh-colored ground, apex dark. The surface shows 

 no spiral lines, or only faint traces of them. Whorls 5%, 

 moderately convex, the last well rounded peripherally and 

 beneath. The aperture is nearly vertical, dark within ; peris- 

 tome narrowly expanded and reflexed, moderately thickened 

 within, white or flesh-tinted. The parietal wall is typically 

 toothless, but sometimes it bears a tubercular white tooth. 



Length 20, diam. 10.7, aperture 10 mm. 



Length 19, diam. 10.2, aperture 10 mm. 



Length 21, diam. 11.2, aperture 10.8 THIM. 



Length 18.8, diam. 10, aperture 9.8 mm. 



Tahiti: "This species only occurred to my notice in one 

 valley, on the southwest coast of Tahiti, where it is abundant, 

 lurking beneath decaying leaves and under heaps of loose 

 stones," (Garrett). 



Partula producta PEASE, Proc. Zool. Soc., 1864, p. 671; 

 1871, p. 473. PFEIFFER, Mon. Hel. Viv., vi, p. 156. 

 SCHMELTZ, Cat. Mus. Godeff., v, p. 92. HARTMAN, Cat. Par- 

 tula, p. 10; Obs. Gen. Partula, Bull. Mus. Comp. ZooL, ix, p. 

 185. GARRETT, Journ. A. N. S. Phila. ix, 1884, p. 66, pi. 

 3, f. 51. 



This terrestrial form was found by Garrett to be invariably 

 dextral. It is not so glossy as P. otaheitana sinistrorsa Pse., 

 but otherwise there is not much difference. P. producta how- 

 ever has somewhat diverse variations; the dark bands be- 

 come confluent in some individuals by darkening of the 

 ground color, leaving the last whorl chestnut with (usually) 

 a pale sutural band and umbilical patch. Garrett also re- 

 cords a mutation uniform pale fulvous or tawny with a darker 

 apex. Description and figs. 1, 2, 3 from examples received 

 from Pease. 



14. P. NODOSA Pfeiffer. PI. 25, figs. 12, 13, 16, 17. 



Shell perforate, conic-ovate, rather solid, obsoletely decus- 

 sate; chestnut-colored, ornamented with a wide white band 

 at the suture, and often some other pale bands. Spire conic, 



