134 AMPHIDROMUS, GROUP II. 





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



striate. palaceus, p. 134. 



c 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 

 above, 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 teysmanni Mouss., MSS. PFR., Novit. Conch, iv, p. 32, pi. 

 116, f. 2, 3 (1871); Monogr. viii, j>. 40. Of. Martens, Malak. BI., 

 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). PL 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.). 



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

 Mousson types); Palabuan (v. Martens). 



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

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



