AMPHIPROMUS, GROUP XI. 193 



On first view similar to A. sinensis Bens., but differs by its flatter 

 whorls, spiral striation, non-thickened peristome, etc. (Pfr-) 



A. HEMICYCLUS Rocliebrune. 



Testa obtuse perforata, elliptice pyramidata, seniicircularis, solida, 

 politissima, alba, fasciis latis violaceis spiraliter cincta ; anfractibus 

 6 ; penultimo sub quadrato ; ultimo spiram superante, intense cur- 

 vato ; apertura elliptica, interne acuta ; peristomate sub recto, labro 

 reflexo, albo ; columella reflexa, obliqua, curvata. Long. 30, lat. 10 

 mill. (Rochebr., Bull. Soc. Philom., Paris, vi, 1881-2, p. 117. 



Bangkok (Bocourt). 



Dr. Jousseaume, who examined the type, thinks this species near 

 A. l&vis Miill., but distinct. The description does not seem very 

 lucid, and is given without translation. 



11. Group of A. xiengensis. 



Farther- Indian representatives of the Java- Timor group of A. por- 

 cellanus. Rather slender and thin, the spire with flames bisected by 

 a median light line, the base with two. spiral bands; or with some 

 modification of this fundamental pattern, or rarely without markings. 

 Apex tipped with a blackish dot. Peristome usually white. Suture 

 generally with a colored border or line below. 



A number of identifications by various authors of Javan or Bor- 

 nean species from Indo-China, were apparently based upon forms of 

 the present group, though the literature, in the absence of descrip- 

 tions, gives no certain clue. The chief references follow : 



A. furcillatus Mous., ROCHEBRUNE, Bull. Soc. Philomathique de 

 Paris, vi, 1881-2, p. 71. Bords du Prek-Scholl, Cambodia (Dr. 

 Harmand). 



A. ICEVUS Miill., ROCHEBR., 1. c. Montagues de Chaudoe [Chau- 

 doc] (Dr. Harmand). 



A. adamsi Reeve, ROCHEBR., t. c., p. 72. Prek-Scholl, au sud de 

 Cratate (Dr. Harmand). 



Bulimus adamsii Reeve, MABILLE & LEMESLE, Journ. de Con- 

 chyl., 1866, xiv, p. 129. Banone, near Battambang ; Phnum- 

 Kretch, Cambodia. 



A. contraries Miill., MORLET, Journ. de Conchy 1, 1889, p. 127, 

 Mountains of the Elephant Chain, Cambodia. 

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