218 PARTULA, RAIATEA AND TAHAA. 



24a. P. D. FORMOSA 'Pease' G-arrett. PI. 20, figs. 5, 6. 



"Shell large, imperf orated, solid, elongate-ovate, striated, 

 shining, pale yellowish white, straw-yellow or fulvous; spire 

 conical, with nearly flat outlines, spirally striated with fine, 

 crowded, incised lines, half the length of the shell, and fre- 

 quently tinged with rose-red ; suture slightly impressed, mar- 

 gined with a rugose, white line; whorls five and a half, flat- 

 tened, the last one large, convex ; aperture oblong, subvertical, 

 obaurif orm ; peristome white, rather widely expanded, decliv- 

 ous, external margin angularly ridged, inner margin strongly 

 labiated, acutely dentate, and contracted above the denticle ; 

 parietal region thinly glazed, edentate ; columellar lip closely 

 appressed over the umbilical region. Length 25, diam. 13 

 mm. (Garrett). 



The metropolis of this very distinct species is in Patimu, 

 or on the southwest part of Raiatea. It occurs 1 . in vast num- 

 bers on 'bushes on the lowlands near the seashore, becoming 

 more scarce inland, where it is found associated with P. 

 hebe, var. bella. It ranges north as far as Vaiau valley, be- 

 coming less and less abundant as the distance increases from 

 its specific centre. (Garrett). 



Partida formosa PEASE in coll. HARTMAN, Cat. Part., p. 8 ; 

 Obs. Gen. Part., Bull. Mus. Comp. Zool., ix, pp. 182, 191 (no 

 description). GARRETT, Journ. A. N. S. Phila. ix, 1884, p. 

 60, pi. 3, f. 49. 



"Its large size, edentate parietal region, sharp labial tooth 

 and closed umbilicus will readily distinguish it. It is never 

 ornamented with bands/' The columella is slightly sinuous, 

 but has no distinct tooth or nodule such as is present in 

 P. imperforata. It differs from P. dentifera by its larger 

 size and, imperforate axis and in its distribution. Fig. 5 

 represents Garrett 's type specimen, no. 59453 A. N. S. P. 

 Others received from him are smaller, length 22, diam. 11.5 

 mm., and length 21.5, diam. 12.5 mm. 



25. P. CITRINA Pease. PI. 20, figs. 10, 11. 



The shell is narrowly perforate, ovate-conic, rather solid,. 



