198 AMPHIDROMUS, GROUP XI. 



somewhat glossy ; uniform sulphur yellow. Spire conic, the vertex 

 white, rather acute. Whorls 6^, a little convex, the last nearly three- 

 sevenths the length of the shell, the base swollen. Columella scarcely 

 inflated, subvertical. Aperture oblique, inverted auriform ; peristome 

 thin, expanded and a little reflexed. Length 25, diam. above aper- 

 ture 12, aperture 11^ mill. (Pfr.}. 



Siam (Mouhot); Laos: Luang-prabang (H. Counillon); Cochin- 

 china: Thu- Dan-Moth (Eyries), and the arroyo of Long-ho, near 

 Ving-Long (Le Mesle). 



Bulimus flavus PFR., P. Z. S., 1861, p. 194; Novit. Conch., p. 

 171, pi. 46, f. 7, 8 ; Monogr. vi, p. 32. MORELET, Series Conchyl. 

 iv, p. 265 (1875) Amphidromus flavus Pfr., FULTON, Ann. Mag. 

 N. H. (6), xvii, 1896, p. 81. ANCEY, Annales Mus. d.'Hist. Nat. 

 Marseille (2), Bull. I, p. 134 (1898). 



I have not seen this species, which seems near the banded and 

 maculate multifasciatus and xiengensis. Fulton remarks that it is 

 more solid than adamsi var. inornatus, with a faint reddish band at 

 lower part of last whorl. The locality " Siam " is doubtful, or pos- 

 sibly correct for the eastern edge of that country. 

 Var. PROXIMUS Fulton. PI. 63, fig. 94. 



ts Differs from flavus in being more elongate, has two indistinct 

 bands at basal part of last whorl, and has a spiral line of equidistant 

 light brown spots just below suture of third and fourth whorls. A 

 single specimen in my own collection, locality unknown " (Fulton}. 



This variety may perhaps be referable to A. xiengensis rather than 

 flavus, and near my var. tryoni. 



A. AREOLATUS (Pfeiffer). PI. 63, figs. 85, 86. 



Shell sinistral, subperforate, ovate-conic, thin, striatulate some- 

 what glossy ; buff-whitish, painted with brown flames which generally 

 fork above. Spire conic, the apex minute, brown ; suture submargi- 

 nate. Whorls 6^, moderately convex, the last a little shorter than 

 the spire, rounded beneath, having a roseate patch at the columella, 

 surrounded by a brown and a buff band. Columella somewhat 

 swollen, slightly twisted. Aperture oblique, inverted auriform ; per- 

 istome thin, rather broadly expanded, the columellar margin nar- 

 rowly reflexed. Length 23, diam. above aperture 11, length of 

 aperture 10^ mill. (Pfr.}. Siam (Mouhot). 



Bulimus areolatus PFR., P. Z. S., 1861, p. 194; Novit. Conch., 



