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. 14^, 

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



Var. GRACILIS Fulton. PI. 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 v?h\}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.Jlavus. I have not seen specimens. 

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



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

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

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

 whorls white, sparsely punctate, with a 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). PI. 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 subver- 

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

 above aperture 13^, aperture 12 mill. long. (Pfr.). 



Laos Mts. (Mouhot). 



Bulimus roemeri PFK., P. Z. S., 1862, p. 274, pi. 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., Fu-L- 

 TON, t. c. p. 80. 



