184 helicidjE. 



and there is no dark stripe behind the lip. Alt. 26, diam. 14-5, 

 longest axis of aperture 13 mill." {Pilshry.) 



Var. gracilis, Fulton. 

 Amphidronms sinensis, var. gracilis, Fulton, A. M. N. H. ser._6, 

 xvii, 1896, p. 80, pi. 6, tig. 10; Pilsbry, Man. Conch, ser. 2, xiu, 

 1900, p. 192, pi. 62, fig. 71. 

 "A very narrow solid form; pale yellow, with two purple- 

 brown bands at lower part of last whorl ; the third and fourth 

 whorls encircled Avitli four rows of light brown spots ; Up and 

 columella thickened and expanded." {Fulton.) 



Pilsbry suggests that this form may belong nearer A. flavus-, 

 but gracilis is much more slender and has a more elongated 

 aperture. 



Hab. Burma : Pegu. 



158. Amphidromus andamanicus, ffanley ^ Tlieohald. 



Bulimus andamanicus (Thorp MS.), Hanley & Theobald, Conch. 



Ind. 1875, p. 59, pi. 148, tig. 10. 

 Amphidromus sp., Nevill, Hand List, i, 1878, p. 127, no. 2L 

 Amphidromus andamanicus, var. nicobarica (Nevill MS.), Godwm- 



Austen, P. Z. S. 1895, p. 450. 

 Atnphidro7nus furcillatus, var. andamanica, Fulton, A. M. N. H. 



ser. 6, xvii, 1896, p. 77. 

 Amphidromus andamanicus, Pilsbry, Man. Conch, ser. 2, xiii, 1900, 



p. 217, pi. 66, fig. 41. 



Shell sinistral, elongate-conoid, smooth and glossy, finely striated 

 and covered \\ iih close minute spirals ; the protoconch white or 

 buff-white with a pale or dark brown apex, the later whorls pale 

 or dark buff, marked with transverse (sometimes oblique) broad 

 dark brown or blackish bars, some of which are occasionally forked 

 at the upper extremity ; they increase in width and become more 

 distant on the later whorls, but on the last whorl decrease and 

 become more crowded, the lower half of the whorl being covered 

 by two rather broad spii-al bands, one infra-peripheral and the 

 other placed around the columella, the two sometimes coalescing ; 

 the latter part of the last whorl is sometimes covered with light or 

 dark green which is occasionally disposed in transverse streaks ; a 

 narrow brown sub-sutural band, edged with white, ascends the 

 greater part of the spire. Whorls Q-Q^, convex. Aperture semi- 

 ovate, three-sevenths the length of the shell ; peristome white, 

 rather thin, slightly expanded, not reflexed ; parietal callus very 

 thin ; columella white, vertical, straight, making a distinct angle 

 with the basal margin, reflexed and adnate at the insertion, leaving 

 a slight narrow slit of the umbilicus. 



Length 35, diam. 19 mm. ; height of aperture 15, width 8-5 mm. 



Length 30, diam. 16-5 mm.; height of aperture 13, width 

 7'5 mm. 



