224 PARTULA, RAIATEA AND TAHAA. 



to the northward, where it is found, though less abundant, in 

 an adjacent valley, associated with the typical P. dentifera. 

 About two miles to the southward, on the same side of the 

 island, in a large valley called Opoa, is found in large num- 

 bers the pretty variety bella Pse., which has passed over a 

 range of wooded hills into a large valley on the south coast, 

 where it occurs in limited numbers in company with P. for- 

 mosa. In another valley, some distance to the northward, 

 on the west coast, we find another variety, ventricosa, Garr. ' ' 



Bulimus hebe PFEIFFER, Proc. Zool. Soc., 1846, p. 39 ; Mon. 

 Hel., ii, p. 68 ; Conchyl. Cab., p. 268, pi. 64, figs. 7, 8. Partula 

 hebe REEVE, Conch. Icon., sp. 25, pi. 4, fig. 25. PFEIFFER, 

 Mon. Hel., iii, p. 453. PEASE, Proc. Zool. Soc., 1871, p. 473 

 PAETEL, Cat. Conch., p. 104. SCHMELTZ, Cat. Mus. Godeff., 

 v, p. 92. HARTMAN, Cat. Part., p. 9 (with woodcut) ; Obs. 

 Gen. Part., Bull. Mus. Comp. Zool., ix, pp. 183, 193. GARRETT, 

 Journ. A. N. S. Phila. ix, 1884, p. 53. Partula globosa 

 PEASE, MS. (Mus. Pease, 1863). GLOYNE, Quar. Jour. 

 Conch., i, p. 338. SCHMELTZ, Cat. Mus. Godeff., v, p. 207. 

 Partula, ventricosa GARRETT, J. A. N. S. P., ix, 54. Partula 

 hebe var. bella PEASE, Proc. Zool. Soc., 1871, p. 473, name 

 only. HARTMAN, Bull. M. C. Z., ix, p. 193. 



Typical P. hebe (pi. 21, fig. 1) has the shell covered with 

 a very thin white more or less shining cuticle, upon which 

 delicate spiral lines may be seen under the lens. Most ex- 

 amples have lost their cuticle and have a matte white sur- 

 face (figs. 2, 3). The size and proportions vary but little, 

 the usual size being, length 15, diam. 10.2 to 11, length 

 aperture 8.2 to 8.8 mm. 



The outer lip is rather narrow in the typical form ; in the 

 heavy, denuded examples it is wide and heavily thickened 

 within, generally showing a trace of the tooth or tubercle 

 above the middle which is so prominent in the related faba 

 group. It is often thickened on the face and convex or 

 carinate there. The columella in oblique view in the aper- 

 ture, is very wide. 



This charming snail has several close relatives among the 

 dull ground-living species, such as P. crassilabris etc. 



