PARTULA, RAIATEA AND TAHAA. 



233 



Partula radiata PEASE, MS. 1863. HARTMAN, Cat. Part., 

 p. 7; Obs. Gen. Part., Bull. Mus. Cora. Zool., ix, pp. 185, 196 

 in part, (1881). GARRETT, Journ. A. N. S. Phila., ix, 1884, 

 p. 74, pi. 3, f. 45. ANCEY, II Nat. Siciliano iii, p. 344 (Sept, 

 1884) ; Nautilus iii, 1889, pi. 1, f. 17. Partula compressa 

 CARPENTER, Proc. Zool. Soc., 1864, p. 675. PEASE, Proc. Zool. 

 Soc., 1871, p. 473. SCHMELTZ, Cat. Mus. Godeff., v, p. 207 

 not P. compressa Pfr., 1850. Partula microstoma PEASE, 

 MS. HARTMAN, Bull. M. C. Z., ix, p. 184, as syn. of vittata. 

 GARRETT, t. c. p. 74, as a form of radiata. SMITH, Ann. 

 Carnegie Mus., i, pp. 429, 472 (1902). 



A dull, streaked species, with "key-hole" aperture, the 

 outer lip having a prominent tooth projecting inward, above 

 which it is very narrow. The parietal tubercle is variable, 

 but usually present. Apex may be either white or blackish- 

 brown. Length 20 to 22, diam. 11. Length 21, diam 11.5 

 mm. It was first described by Garrett, in 1884, although 

 Hartman had given a brief descriptive note in 1882 (Bull. 

 M. C. Z., ix, 185, 196). It was widely distributed by Pease, 

 and in consequence of an ill-judged identification by Cuming 

 and Carpenter, has generally been known in collections as 

 "P. compressa Pfr." Garrett 's type, no. 59409 A. N. S. P. 

 is figured, fig. 5. Others from Pease (fig. 6), Hartman and 

 others are before me. P. radiata stands very close to P. 

 fusca approximata of the,, southern part of Raiatea, but it is 

 duller, with a larger lip-tooth and generally it has a parietal 

 tooth. In the several forms of P. fusca, the parietal tooth, 

 when present, is not so large as in radiata. 



A form which Pease called P. microstoma (in his collection, 

 1863), and which inhabits Vairahi valley, "though very fre- 

 quently found adhering to the lower portion of the trunks of 

 trees and shrubs, can scarcely be separated from radiata, 

 which is strictly terrestrial in habit. Dr. Hartman unites it 

 with P. vittata. It appears to me more nearly related to 

 radiata than the latter, which is smoother, and the columellar 

 lip is flat and simple." (Garrett). 



Fig. 14, of pi. 27 represents a specimen of microstoma 



