244 PARTULA, RAIATEA AND TAHAA. 



white or pale. Columella concave, with no callus or nodule. 

 A very small parietal tooth is usually present. 



Partula terrestris Pease MS., GARRETT, Journ. A. N. S. P., 

 ix, 1884, p. 75. P. castanea Pse. MS., GARRETT, t, c. p. 76. 



Differs from P. vittata chiefly by the distinct angulation of 

 the 'body in front of the aperture. Gotypes in coll. A. N. S. 

 P., no. 59450. Garrett writes: 



"In the valleys on the southern part of the island 

 (Raiatea), we find a gradual change from the typical P. ap- 

 proximata into the form known as P. terrestris Pease, which 

 latter connects the former with vittata. The range of ter- 

 restris terminates at Opoa valley, on the southeast coast. 



"At Faaloa, on the east coast, there exists a form, P. cas- 

 tanea Pease, which is intermediate between terrestris and 

 vittata. It is usually chestnut-colored, constantly toothed on 

 the parietal wall, and the fasciation is the same as in the other 

 varieties. It has not spread any to the northward of Faaloa, 

 but occurs more sparingly in a small valley between Faaloa 

 and Opoa." (Garrett). A specimen of castanea received 

 from Pease is figured (pi. 17, fig. 12). It is absolutely iden- 

 tical with terrestris. 



39. P. PLANILABRUM Pease. PI. 18, figs. 1, 2, 3, 4. 



Shell long-ovate, solid, umbilicate; whorls 5, plano-convex; 

 aperture oblong-oval, somewhat ear-shaped, toothed. Lip 

 oblique and broadly flattened, thickened within, projecting 

 outwardly, having a toothed callus. Columella straight, 

 angular at the base. Chestnut-colored, pale at the suture, 

 sometimes encircled with a broad yellowish-brown band. 

 Length 22, diam. 12 mm. (Pse.). 



East coast of Tahaa. 



Partula planilabrum PEASE, Proc. Zool. Soc., 1864, p. 672 ; 

 1871, p. 473. - - PFEIFFER, Mon. Hel., vi, p. 156. - - BINNEY, 

 Proc. Acad. Nat. Sci. Phil., 1865, pp. 245, 247. SCHMELTZ, 

 Cat. Mus. Godeff., vi, p. 81. HARTMAN, Cat. Part., p. 7; 

 Obs. Gen. Part, Bull. Mus. Comp. Zool., ix, pp. 185, 188, 190. 

 GARRETT, Journ. A. N. S. Phila., ix, 1884, p. 63, pi. 3, f. 77.. 



