AMPHIDROMUS, GROUP V. 157 



HANLEY & THEOBALD, Conchologia Indica, p. x, pi. 19, f. 5 (not 

 of Gould). 



Somewhat allied to A. dohrni, this species differs by its black- 

 brown parietal callus, more deeply constricting sutures, heavier lij^ 

 which is not appressed behind, etc. A. comes is much stouter and 

 differently colored. The doubtful B. rircscens of Swainson had r.o 

 dark parietal callus. A. j anus stands quite alone for an Amphidronm?, 

 having no close companions. 



The bands and basal patch are brown, but show green through the 

 citron-colored outer layer of the last whorl ; they are often wanting 

 on the upper part of the body-whorl, and are broadly interrupted at 

 the varices and behind the lip. 



The species was supposed by Pfeiffer to be from the New Hebrides. 

 Gassies introduced it into his New Caledonian fauna on evidence 

 which proved to be false. Specimens in our collection sub nom. B+ 

 otricallosus bear the locality ' Burmah," which is the more probable 

 as Hanley and Theobald figure janus for atricallosus in the Con- 

 chologia Indica, arid Nevill records specimens from Mergui in the 

 Indian Museum, ex coll. Theobald. Pfeiflfer's name Janus refers to 

 ihe aperture looking in opposite directions in different specimen?. 



A. ENGANOENSIS Fulton. PI. 61, figs. 53, 54, 55, 56. 



Shell openly perforate, sinistral, oblong-ovate, solid, glossy, striafc^ 

 ulate, ground-color olivaceous yellow (or rich \>Twi\} 9 fading to pale 

 buff toward the suture and on the spire, with some irregular olive 

 streaks, and sometimes four reddish-brown bands subsutural, cir- 

 cum-umbilical, and two between, the upper two ascending the spire; 

 early whorls uniform white, yellowish, or with a dark band above 

 the suture. Varices narrow and brown, followed by a whitish streak, 

 or wanting. Whorls 6^7, convex, separated by a white-edged im- 

 pressed sutuie, the last whorl inflated. Aperture oblique, white or 

 lilac-tinted within, and showing the bands when present; peristome 

 white, broadly rrftexed, recurved at the edge, the columeHa convexly 

 folded, the reflexed margin broadly dilated, and somewhat lobed over 

 the umbilicus, impressed near its insertion. Parietal callus translucent,. 

 the color of the cuticle showing through it. 



Alt. 49, diam. '27 mill. (type). 



Alt. 50-51, diam. 27, longest axis of aperture, 27 mill. 



Alt. 54, diam. 26, longest axis of aperture, 26 mill. 



