AMPHIDROMUS, GROUP XV. 211 



vex, the first one black ; penultimate and last whorls strongly convex; 

 suture impressed, marked by a white line below, which is often 

 bordered by an indistinct pink band. Aperture small, oblique, show- 

 ing the bands within ; peristome white both inside and out, reflexed, 

 thin ; columella oblique, its outer margin triangularly reflexed above, 

 continued some distance as a thickened ledge upon the parietal wall. 

 Parietal callus thin, showing the bands through, thickened at the edge 

 below and near the posterior angle, where there is a subtriangular tuber- 

 cle, separated from the termination of the outer lip by a deep but narrow 

 channel, which continues along the suture inside (fig. 25). 



Alt. 36, diam. 19, longest axis of aperture 18 mill. 



Alt. 34, diam. 16, longest axis of aperture 16 mill. 



Alt. 24^, diam. 15 mill. 



Timor: Southern part of the island from Kupang and Babauw in- 

 land to Okabita, not uncommon (v. Martens); Pariti and Taimanan 

 (Gazelle Exped.); Amarassi (Dr. H. Ten Kate; a variety?) Rotti 

 (a small island near the west end of Timor): Talae (A. Wichmann). 



Helix contraria MULLER, Verm. Hist, ii, p. 95. GMELIN, Syst. 

 Nat. (13), p. 3644. FEUUSSAC, in Freycinet's Voy. autour du 

 Monde, 1'Uranie et la Physicienne, Zool., p. 474, pi, 67, f. 8, 9 

 Helix interrupta sinistrorsa, etc. CHEMNITZ, Conchyl. Cab. ix, p. 

 101, f. 938, 939 (Mailer's type). H. interrupta var. DILLWYN, 

 Catal., ii, p. 937. Bulimus intemiptus var. BRUG., LAM. KCSTER, 

 Conchyl. Cab. p. 14, pi. 9, f. 5, 6 (copied from Chemnitz). HOM- 

 BRON & JACQUINOT, Voy. au Pol Sud, Moll., pi. 8, f. 1. Bulimus 

 contrarius DESH, in Lam., An. s. Vert., viii, p. 226 ; in Fer. Hist., 

 p. 19, pi. 161, f. 10, 12, 13. MOUSSON, Moll. Java, p. 110 PFR., 

 Zeitschr. f. Malak., 1849, p. 138 ; Conchyl. Cob. p. 136, pi. 41, f. 3, 

 4; Monogr. iii, p. 327 ; iv, 384; vi, 30; viii, 46 (always exclusive 



of varieties) MARTENS, Ostas. Landschn, p. 363, pi. 21, f. la,b,c, 



10, and var. subconcolor, p. 365, pi.' 21, f. 9 (1867) ; Mai. Blatt, x, 

 1863, p. 171 ; Monatsber. K.-P. Akad. Wissensch. zu Berlin, 1877, 

 p. 278 (1878). Orthosfylus contrarius BECK, Index Moll. p. 50. 



Amphidromiis contrarius WALLACE, P. Z. S., 1865, p. 412 

 SEMPER, Reisen in Archip. Phil., iii, p. 147, pi. 16, f. 24 (denti. 

 tion) SCHEPMAN, Notes Leyden Mus. xiv, 1892, p. 153. 

 MARTENS, in Weber's Zool. Ergebnisse einer Reise in Nieder. 

 laudisch Ost-Indien, ii, p. 241 ; and F. WIEGMANN, iii, p. 208, pi. 

 15, f. 12-17 (anatomy). FULTON, Ann. Mag. N. H. (6), xvii, p. 

 77 (exclusive of varieties). 



