134 AMPHIDROMUS, GROUP II. 



c 2 . Pale yellow, tawny or white, usually one varix ; flatly 



striate. palaceus, p. 134. 



e 3 . Strongly wrinkle-striate and plicate. winteri, p. 137. 



A. TEYSMANNI (' Mousson ' Pfr.). PI. 47, figs. 8, 9. 



Shell nearly covered-perforate, ovate-conic, ventricose, short, rather 

 thin ; irregularly wrinkle-striate, seen under the lens to be sculptured 

 with close, obsolete spiral striae ; sulphur yellow and rather glossy 

 abov 7 e, whitish below the middle. Spire broadly conic, the vertex 

 minute, rather acute ; suture a trifle marginate. Whorls 6, a little 

 convex, wanting varices, the last rather inflated, about as long as the 

 spire, rounded below. Aperture a little oblique, truncate-oblong or 

 somewhat rhombic oval, white and glossy inside ; peristome white, 

 calloused, rather widely expanded and delicately recurved, the mar- 

 gins joined by a white entering callus; columellar margin vaulted, 

 reflexed, dilated, more or less covering the narrow umbilicus (Pfr.). 

 Length 46, diam. 30, or length 56, diam. 32 mill. 



Moluccas (?) Teysmann, in coll. Mousson. 



Bulimus teysmarmi Mouss., MSS. PFR., Novit. Conch, iv, p. 32, pi. 

 116, f. 2, 3 (1871); Monogr. viii, p. 40. Of. Martens, Malak. Bl., 

 1873, xx, p. 154. A. teynsmanni (sic) FULTON, t. c., p. 73. 



Allied to A. palaceus and A. winteri, but thin, more globose, with 

 short spire. Only the types are known. Von Martens considers it 

 a variety of winteri. 



A. PALACEUS ('v. d. Busch ' Mousson). PI. 47, figs. 1, 2, 4, 5, 6. 



Shell oblong-ovate, perforate, transversely [in the direction of 

 growth-lines] strongly striate, glossy, yellow or buff- tawny, the apex 

 a little obtuse, white ; suture subcrenulated, white-margined. Whorls 

 7, a little convex, the last as long as the spire, somewhat inflated, the 

 penultimate ornamented with a transverse brown band [varix]. 

 Aperture ovate; columella straight, subinflated ; peristome white, 

 reflexed, thickened, the columellar margin expanded, parietal margin 

 white-calloused. (Mousson.) 



Alt. 53, diam. 30 mill. (Mouss.) f 



Java : Pardana and Tijkoya, in coffee plantations (Zollinger ; 

 Mousson types); Palabuan (v. Martens). 



Bulimus palaceus v. d. Busch MS., MOUSSON, Land- und Susswasser- 

 Moll. Java, pp. 28, 108, pi. 3,'f. 1 (1849). PFR., Zeitschr. f. Malak., 



