PARTULA, RAIATEA AND TAHAA. 243 



mata PEASE, MS., SCHMELTZ, Cat. Mus. Godeff., v, p. 207.- 

 GLOYNE, Quar. Jour. Conch., i, p. 338. HARTMAN, Cat. Part., 

 p. 7; Obs. Gen. Part., Bull. Mus. Coinp. Zool., ix, pp. 179, 

 195 (no description). GARRETT, Journ. A. N. S. Phila., ix, 

 1884, p. 75. 



Doubtfully distinguishable from P. fusca. The figure is 

 drawn from the shell already figured by Garrett, who col- 

 lected the type lot. He states that " no examples were dis- 

 covered in Hapai or Vaiau, the headquarters of lugubris and 

 ovalis, which two valleys are between Toloa and the small 

 ones inhabited by approximata." 



386. P. P. APPROXIMATA 'Pease' Garrett, PI. 17, figs. 13, 14, 15. 



This is a race subsidiary to vittata characterized by its 

 inferior size, smaller umbilicus, which is frequently imper- 

 vious, smaller aperture, and less expanded lip. The parietal 

 tooth is very seldom developed. The banding is similar in 

 the two forms, but occurs rarely in approximata, which dif- 

 fers also in being generally a lighter or darker chestnut-color, 

 though both have similar horn-colored varieties, with brown 

 streaks. The last whorl is usually angular in front, as in 

 var. terrestris. 



Occurs in greater or less profusion in several small valleys 

 on the southwest part of Raiatea. 



Cotypes from Garrett are figured. 



38c. P. P. TERRESTRIS 'Pse.' Garrett. PI. 17, figs. 9, 10, 11. 



The shell is moderately umbilicate, thin, with only a trace 

 of spiral striae on the last whorl. It is (1) corneous with 

 yellowish streaks, (2) chestnut colored, or (3) chestnut with 

 an equatorial yellow zone. The apex is usually pale, but 

 sometimes purple. The last ivhorl is rather acutely angular 

 immediately in front of the upper termination of the outer 

 lip ; or if not, an angle may 'be traced above the suture, near 

 the aperture; the immature stage being strongly angular. 

 The aperture is rather narrow, with a distinct prominence at 

 the upper end of the lip-callus. Lip moderately expanded, 



