192 AMPHIDROMUS, GROUP X. 



A. sylheticus, not "baggy" below, and almost white with a faint 

 ochre band above each of the purple-black ones. The apical whorls 

 are corneous-white, and weakly punctate, and there is a perceptible 

 groove at the root of the columella. The peristome is pure white, 

 and there is no dark stripe behind the lip. Alt. 26, diam. 141, 

 longest axis' of aperture 13 mill. (fig. 69). 



Var. GRACILIS Fulton. PL 62, fig. 71. 



"A very narrow, solid form ; pale yellow with two purple-brown 

 bands at lower part of last whorl ; the third and fourth whorls encir- 

 cled with four rows of light brown spots; lip and columella thickened 

 and expanded." (Fulton.) Pegu (British Museum). 



A. sinensis var. gracilis FULTON, t. c., pi. 6, f. 10 (1896). 



This may belong nearer A.flavus. I have not seen specimens. 

 Var. INDISTINCTUS n. v. PL 62, fig. 70. 



Pale yellow, with a subperipheral bluish band and a circumcolu- 

 rnellar dusky reddish one ; bluish above the periphery with faint pale 

 lines, and a buff band below the suture; the spire bluish, 1^ early 

 whorls white, sparsely punctate, with u black apical spot. Whorls 6, 

 the last rather baggy below. Peristome white, reflexed, the colu- 

 mella dilated and recurved, its face convex; noticeably grooved at the 

 root; the umbilicus quite small. Alt. 30^, diam. 16^, longest axis 

 of aperture 15 mill. Laos Mts* 



A. ROEMERI (Pfeiffer). PL 63, figs. 95, 96. 



Shell sinistral, perforate, ovate-conic, rather solid ; lightly striate 

 and somewhat decussated by very close spiral striae visible under a 

 lens ; flesh-colored with a pale band at the suture. Spire conic, the 

 apex rather acute. Whorls 6, a trifle convex, the last about as long 

 as the spire, subangulate and with two reddish bands below the mid- 

 dle, the base rounded. Aperture oblique, auriform ; peristome sim- 

 ple, the outer margin narrowly expanded, columellar margin sub ver- 

 tical, dilated, reflexed and overhanging above. Length 23^, diam. 

 above aperture 13J, aperture 12 mill. long. (P/r.^). 



Laos Mts. (Mou hot). 



Bulimus roemeri PFR., P. Z. S., 1862, p. 274, pL 36, f. 4; Mou- 

 hot's Travels in the central parts of Indo-China, ii, plate opp. p. 186, 

 f. 4 (1864); Novit. Conch., p. 217, pi. 57, f. 10, 11; Monogr. vi, p. 

 44 (?)MARTENS, Ostas. Landschn., p. 81. A. roemeri Pfr., FUL- 

 TON, t. c. p. 80. 



