PLACOSTYLUS, FIJI IS. 109 



In this variety the basal lip is often narrowly reflexed. In his 

 latest paper, Garrett unites rambiensis and ochrostoma, a conclusion 

 in which I lieartily concur, though there has apparently been some 

 divergence which may render the retention of rambiensis in a varietal 

 sense advisable. 



The species is obviously allied to P. guanensis, but differs in the 

 thinner shell and cuticle, usually more inflated form, the less angular 

 columellar fold, and different color-pattern. Garrett found two 

 specimens on that part of Vanua Levu opposite to Rambi Island. 

 He writes as follows : " It is the smallest species, so far known, in- 

 habiting the group. It is rather variable in size, ranging from 28 to 

 40 mill, in length, and its shape varies from ovate to oblong-ovate. 

 The texture is rather thin, the sculpture the same as on P. ruyosus 

 [rugatus~\, and the color ruddy corneous or whitish, often with a red- 

 dish spire. Though very frequently wholly decorticated, the epi- 

 dermis, when present, is very thin, light fulvous, and usually beauti- 

 fully mottled with green, which is occasionally disposed in zigzag 

 pattern. The aperture and lips are more or less intense saffron- 

 yellow, paler in the throat. The columellar fold is not so conspic- 

 uous, and is more vertical than in the preceding species (P. rugatus). 

 The peristome, though usually simple, is often slightly expanded, 

 particularly so in the Rambi shells, some of which have the lip 

 slightly reflected." 



Garrett's types of ochrostoma and rambiensis are in the collection 

 of the Academy. 



P. PFEIFFERI Kobelt. PI. 37, figs. 42, 43. 



Shell small, covered-perforate, ovate-fusiform, solid, and thick, 

 striate, the last whorl closely sculptured with obliquely spiral 

 wrinkles; reddish flesh-colored, the last whorl whitish with olive- 

 green markings, which are partly arranged in flammule-streaks, 

 partly in spiral bands. Spire rather high conic, eroded, of a hand- 

 some red color, the apex somewhat obtuse. Whorls 5, separated by 

 a lightly impressed suture, becoming deeper below, lightly crenu- 

 lated and white edged ; penultimate whorl more convex, the last 

 whorl descending in front, scarcely inflated, a little longer than the 

 spire. 



Aperture scarcely half the length of the shell, acutely ovate, some- 

 what ear-shaped, nearly vertical, but retracted a little below, yel- 



