204 AMPHIDROMUS, GROUP XII. 



more or less interrupted. Some specimens are stronger and heavier 

 than the type " (Smith). Named for Anna AVeber, who accompanied 

 her husband in his East Indian explorations. 



A. OSCITANS v. Martens. PI. 67, figs. 1, 2, 3. 



Shell sinistral, ovate-conoid, rather thin ; yellow, painted with 

 rather ivide brown stripes, which are continuous, nearly straight or a 

 little bent, and below the suture'rarely forked. Apex minute, reddish- 

 brown. Whorls 7, the upper ones nearly flat, the suture appressed 

 and whitish, last whorl rather convex beneath. Aperture about half 

 the shell's length or a little more, acutely ovate ; peristome rather 

 thin, the columellar margin vertical, appressed, the outer lip a little 

 expanded, white ; throat pale yellow showing the brown stripes 

 through (Martens). 



Length 40, diam. 19^, aperture incl. peristome 22 mill. 



Length 40, diam. 18, aperture incl. peristome 20 mill. 



Attor Island (Rolle, Everett) ; Pura or Poera 1. (P^verett). 



A. inconstans var. D, FUI.TON, Proc. Malac. Soc. Lond. iii, p. 10, 



213 A. oscitans MARTENS, Archiv fur Naturgeschichte, Ixv, p. 29, 



pi. 3, f. 3, 4 (April, 1899). 



" Most nearly allied to A. sumbaensis Fulton, from Sumba, but 

 easy to distinguish by the white, not red, color of the peristome. 

 The streaks are never interrupted by light spiral bands, as the rule 

 is in A. contrarius, but only below the suture in places are dislocated ; 

 mostly simple, seldom forked above" (Mart.}. 



A specimen before me, from Allor Island (pi. 64, fig. 17) has 6 

 whorls, the last whitish above, retaining a thin greenish-yellow 

 cuticle below ; decorated with many purplish stripes, which on all 

 but the last whorl are cut by a narrow white spiral band, as in A. 

 contrarius. The stripes are dislocated above on the fourth whorl, 

 forming a spot-band below the suture. Length 34, diam. 16, longest 

 axis of aperture 18^ mm. 



A. KALAOENSIS Fulton. PI. 67, figs, 4, 11. 



Shell sinistral, narrowly perforate, long conic, thin but moderately 

 solid, glossy and lightly striatulate. Pale yellow, lighter on the 

 spire, with two belts of squarish or oblong dark brown spots and some- 

 times a dark suprasutural line on the spire, Jive on the last whorl, that 

 around the umbilicus and the next one nearly or quite continuous 



