232 AMPHIDROMUS, GROUP XIX. 



A. SINISTRALIS (Reeve). PI. 68, figs. 23-31. 



Shell sinistral, umbilicate, long-conic, rather slender, moderately 

 solid, glossy, usually fleshy buff or yellow, fading to whitish on the 

 spire, marbled or dotted with translucent-gray, and often more or less 

 streaked obliquely with gray or pinkish gray. Slightly striatulate 

 and obsoletely striate spirally. Spire long and straightly conic, the 

 apex obtuse. Whorls 6^ to 7, convex. Aperture small, oblique, 

 while, yellow or brownish inside; peristome white, expanded, the 

 columellar margin triangularly dilated above, the edge thickened at 

 the insertion above the umbilicus. 



Alt. 37, diam, 18, longest axis of aperture 16J mill. 



Alt. 39, diam. 16, longest axis of aperture 15^ mill. 



Celebes: northern peninsula from Paguat westward. 



Bulimus sinistralis REEVE, Conch. Icon. pi. 81, f. 603 (Decem- 

 ber, 1849). PFR., Conchyl. Cab., p. 137, pi. 41, f. 11-13; Monogr. 

 iii, p. 321 ; iv, 382; vi, 23 MARTENS, Ostas Lamlschn., p. 355, 

 pi. 21, f. 2a, b, c, 11 ; Malak. Bl., xx, 1872, p. 173. TAPPARONE- 

 CANEFRI, Ann. Mus. Civ. Stor. Nat. dLGenova, xx, 1884, p. 147 

 (with var. decolor)-, 169. Helix Iceva QUOY & GAIMARD, Zool. As- 

 trolabe, ii, p. 120, pi. 10, f. 4 (living). Bulimus laevis DESH. in 

 Fer. Hist., pi. 161, f. 11, 14-18 Amphidroiuus sinistralis WAL- 

 LACE, P. Z. S., 1865,' p. 412. SEMPER, Reisen im Archip. Phil., 

 Hi, p. 146, pi. 16, f. 22 (teeth) BOETTGER, Bericht Senckenb. Nat. 

 Ges., 1891, p. 269. FULTON, Ann. Mag. N. H. (6). xvii, p. 76, 

 with vars. rosea and lutea. KOBELT, Abhandl. Senckenb. Natu- 

 forsch. Gesellschaft, xxiv, p. 79, 80, pi. 7, f. 8, 8. P. &. F. SARA- 

 SIN, Die Land-Mollusken von Celebes, p. 212, pi. 31, f. 303 (teeth), 

 1899. 



The translucent -grayish dots, blotches or streaks on a pale yellow 

 or pinkish ground are characteristic, though a wide range of coloring 

 obtains. Reeve's type (pi. 68, fig. 23) was decidedly streaked. It 

 has been reported from Java, Timor and the Moluccas, but no doubt 

 erroneously. 



Sarasins give the following localities and color-forms: Menado : 

 yellow with reddish apex and sparse translucent flecks ; yellow, with 

 dark greenish streaks. Kema ; yellow or reddish, with numerous 

 dark flecks, the origin of which by dissolution of streaks is shown by 

 a few shells. Tomohon ; uniform yellow, reddish, yellow with a 

 lighter spiral band upon the last whorl, or upon the others, with 



