AMPHIDROMUS, GROUP VI. 177 



are faintly margined with pale yellow, arid 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 those 

 given above, the finest specimen having a length of 54 mill," 

 (Smith.} 

 A. COCHINCHINENSIS (Pfeiffer). PI. 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 per versus." 



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 pui^le inside, glossy; peristome 

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

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

 (Pfr.). 



Brelinn, in the Stiengs country, or Moi, on the eastern frontier of 

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

 bodia (Mouhot). 



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

 (Sept., 1860); and in Mouhot's Travels in the central parts of Indo- 



China, etc., ii, p. 185 PFR., Malak. Blatter, 1861, p. 11; MoinM>r- 



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