266 PARTULA, SAMOAN ISLANDS. 



One of Gould's figures is copied, fig. 1. Other figures 

 drawn from the same type specimen are given (figs. 2, 3, no. 

 2687 A. N. S. P.). The whitish spiral lines on this shell are 

 apparently pathologic. 



This species is distinguished from P. canalis by the white 

 spire of fewer whorls (5% to 5%), the more developed stria- 

 tion of the last whorl and the comparatively larger aperture. 

 In some examples, such as that shown in fig. 5, the spiral 

 striation of the last whorl is hardly visible above the middle. 



Gould's second locality for this species, "Raraka," is a 

 low island (atoll) of the Paumotu group, where it is prac- 

 tically certain that no Partula lives. 



li Partula cornea Gld. (upolensis Mss.) " SCHMELTZ Catalog 

 II der zum Verkauf stehenden Doubletten aus den naturhis- 

 torischen Expeditionen .der Herren Joh. Ces. Godeffroy & 

 Sohn in Hamburg, p. 25, no. 1379 (March, 1865), is an un- 

 described form, about which very little is known. Garrett 

 placed upolensis in the synonymy of P. conica, but he seems 

 to have had P. stevensoniana. A specimen purchased from 

 the Godeffroys as P. upolensis (no. 59845 A. N. S. P.) as from 

 Samoa, is nothing else than P. rosea cognata! This shell is 

 figured, pi. 33, fig. 3. 



55. P. STEVENSONIANA n. sp. PI. 32, figs. 4, 9, 11 ; pi. 31, fig. 12. 



The shell is openly umbilicate, ovate-conic, rather thin, 

 whitish under a greenish-yellow cuticle, pale corneous or 

 brown on the spire, suture edged with a white line. The 

 embryonic whorls, except the first half-whorl, are deeply and 

 very closely sculptured with engraved punctate spirals (pi. 

 31, fig. 12) ; following whorls and upper half of last whorl 

 have rather widely spaced spiral lines, and the basal half of 

 the last whorl is densely marked with wavy spirals. Spire 

 short, conic, regular. Whorls 5*4, convex, the last equally 

 convex except near the aperture where it is a little produced 

 outwardly towards the base. Aperture ample, flesh colored 

 within, but slightly oblique. Peristome reflexed, ivory white r 

 dilated and a little impressed at the columellar insertion. 



