226 PARTULA, RAIATEA AND TAHAA. 



callus. The columellar margin has no 'callous tubercle or 

 node, 'but in oblique view is seen to be very broad. It is 

 angularly bent at the insertion. Parietal wall covered with 

 a thin, transparent callus, bearing a small white tooth far 

 within. 



Length 14.5, diam. 10 mm. 



Length 15.3, diam. 9.3 mm. 



Length 15 to 16, diam. 10 mm. 



Raiatea : The metropolis of this species is in Hapai valley, 

 on the west coast of Raiatea, the home of P. imperforata 

 and lugubris. It is very abundant, lurking beneath decay- 

 ing vegetation and 'found associated with the typical form 

 of P. lugubris. It has not spread any to the northward, but 

 to the southward it has migrated into two small ravines. 

 (Garrett). 



Partula crassilabris PEASE, Amer. Jour. Conch., 1866, p. 

 199; 1871, p. 81, pi. 1, fig. 6; Proc. Zool. Soc., 1871, p. 473. 

 SCHMELTZ, Cat. Mus. Godeff., v, p. 207. PPEIPFER, Mon: 

 Hel., viii, p. 208. HARTMAN, Cat. Part., p. 9 ; Obs. Gen. Part., 

 Bull. Mus. Comp. Zool., ix, pp. 181, 192 (excl. rustica). 

 GARRETT, Journ. A. N. S. P., ix, 1884, p. 66. Partula ota~ 

 heitana REEVE, Conch. Icon., pi. 2, fig. lie, not of Bruguiere. 

 Partula hebe var., CARPENTER, Proc. Zool. Soc., 1864, p. 675. 



This small ground-snail is very closely related to P. hebe. 

 It differs from that by the dull brown color, smaller parietal 

 tooth (which indeed is sometimes wanting), the less ex- 

 panded lip, and persistent cuticle. The description and 

 fig. 10 are from Pease's type lot, no. 59477 A. N. S. P. The 

 color is variable. 



a. Yellowish chestnut, the base darker, summit purplish, a 

 pale brown peripheral line (fig. 5). 



b. Chestnut, the spire darker, purplish ; often a white hair- 

 line at suture (fig. 9). 



c. Light brown or brownish-corneous, summit darker, peri- 

 phery indistinctly marked with a light or a dark band. 



d. Greenish-corneous, lip pure white. An albino. 



