AMPHIDROMUS, GROUP VI. 117 



are faintly margined with pale yellow, and between the varix on the 

 back of the last whorl and the lip the surface is whitish, the purple- 

 brown markings which occur on the rest of the whorl ceasing at the 

 varix. This species sometimes attains larger dimensions than thosje 

 given above, the finest specimen having a length of 54 mill.'* 

 (Smith.) 

 A. COCHINCHINENSIS (Pfeiffer). PL 54, fig. 69. 



Shell im perforate, fusiform-ovate, solid, smooth, glossy, pale sul- 

 phur-colored or whitish. Spire a little convexly turreted, the apex 

 somewhat obtuse, suture light, pale. Whorls 6 to 7, the upper a little 

 flattened, the following more convex, last whorl about two-fifths the 

 total length, tapering at base, subcompressed. Columella cord-like, 

 slightly twisted. Aperture a little oblique, elliptic-oval ; peristome 

 somewhat thickened, the right margin narrowly expanded, columellar 

 margin dilated, adnate. Length 39, diam. 17, aperture 18-19 mill. 

 (Pfr.). Cochin China (Pfr.). 



Bulimus cochinchinensis PFR., P. Z. S., 1856, p. 331 ; Monogr. iv, 

 p. 373 Amphidromus cochinchinensis Pfr., FULTON, Ann. Mag. 

 N. H. (6), xvii, 1896, p. 69, pi. 6, f. 6. 



Mr. Fulton has figured the type of this species. He remarks : "A 

 cylindrical elongated form of a uniform pale yellow color. May pos- 

 sibly prove to be but a variety of perversus." 



A. CAMBOJIENSIS (Reeve). PI. 59, fig. 32. 



Shell dextral or sinistral, oblong-conic, solid, striatulate; whitish, 

 irregularly marbled with flames and streaks of brown. Spire thick, 

 terminating in a rather obtuse cone. Whorls 8, the upper ones flat- 

 tened, last 3 more convex, the last whorl about equal to three-sevenths 

 the length, distinctly striate. Columella thick, somewhat twisted, 

 white. Aperture oblique, oval, deep purple inside, glossy; peristome 

 thickened, expanded, white, the margins joined by a thick, white cal- 

 lus. Length 70, diam. above apertwre 32, aperture 33 mill, long 

 (Pfr.}. 



Breliim, in the Stiengs country, or Mo'i, on the eastern frontier of 

 French Cochinchina, 60 leagues north of Saigon (Morelet) ? Cam- 

 bodia (Mouhot). 



Bulimus cambojiensis REEVE, Ann. Mag. N. H. (3), vi, p. 204 

 (Sept., I860); and in Mouhot's Travels in the central parts of Irdo- 



China, etc., ii, p. 185 PFR., Malak. Blatter, 1861, p. 11; 



12 



