202 PARTULA, MOOREA. 



with a white thread. Whorls 5%, slightly convex, the last 

 slightly shorter than the spire, somewhat swollen above, taper- 

 ing towards the base. Columella nearly simple, almost verti- 

 cal. Aperture slightly oblique, truncate-oblong; peristome 

 white, thin, the right margin narrowly expanded, sinuated 

 above, columellar margin dilated, reflexed. Length 19, diam. 



9, aperture with peristome 10 mm. long, 4% wide inside 



(Pfr.), 



Moorea. 



Partula suturalis PPR., P. Z. S. 1855, p. 98 ; Novit. Conch. 



1, p. 62, pi. 17, f. 18, 19; Monographia iv, 508. HARTMAN, 

 Catalogue of Partula p. 10. SMITH, Ann. Carnegie Mus. i, 

 p. 446. Partula lineata Lesson, REEVE, Conch. Icon, vi, pi. 



2, f. 7. GARRETT, Journ. Acad. Nat. Sci. Phila. ix, 1884, p. 

 50, pi. 3, f. 83, and of some other authors; not P. lineata 

 Lesson. Partula alternata (Pease, MS.) H. H. SMITH, Ann. 

 Carnegie Mus. i, p. 447 (March, 1903). Partula vexillum 

 PEASE, Amer. Jour. Conch., 1866, p. 198 ; 1867, p. 81, pi. 1, fig. 

 8; Proc. Zool. Soc., 1871, p. 473. PFEIFFER, Mon. Hel., viii, 

 p. 196. Partula nodosa CARPENTER (not of Pfeiffer), Proc. 

 Zool. Soc., 1864, p. 675 (= alternata) . 



The original figures of this species are copied, pi. 27, figs. 



10, 11. It was described from the Cuming collection, the 

 habitat being unknown. Dr. Hartman seems to have first re- 

 cognized it in the common Moorean shell under considera- 

 tion. Garrett subsequently (1884) discussed the species at 

 great length. 



Figures 5, 6, 8 of plate 28 represent the typical form of 

 the species. The shell is rather solid when adult, compact in 

 shape. The lip is snow-white, thickened within, columella 

 vertical, swollen or inflated just below the insertion. There 

 is generally no parietal tooth, but when developed it is a low 

 callous node or pad, not often a distinct tooth, as in vexillum. 

 The first 2% whorls are isabella-colored ; the darker o'b- 

 liquely longitudinal stripes appear at first rather faint and 

 widely spaced on the isabelline ground, but on the last whorl 

 the ground becomes opaque, more or less cafe-au-lait tinted or 



