. Mollusca ... Mollusks. Kg. 81.—Chloritis theoialdi. fProm Proo. Malac. Soc. London.) A specimen in the Hungerford collection of the British Museum I also refer to C. theobaldi. It is a trifle smaller than the type, measuring 24 : 20 : 15 mm., and exhibits a very faint trace only of the supra-peripheral band near the peristome. The two species approach G. franciseanorum, Gredler, a Chinese form. 0. theobaldi especially bears a striking resemblance, but has the umbilicus a little more contracted, the spire is relatively higher, and the aperture is less dilated laterally, while the columellar m
. Mollusca ... Mollusks. Kg. 81.—Chloritis theoialdi. fProm Proo. Malac. Soc. London.) A specimen in the Hungerford collection of the British Museum I also refer to C. theobaldi. It is a trifle smaller than the type, measuring 24 : 20 : 15 mm., and exhibits a very faint trace only of the supra-peripheral band near the peristome. The two species approach G. franciseanorum, Gredler, a Chinese form. 0. theobaldi especially bears a striking resemblance, but has the umbilicus a little more contracted, the spire is relatively higher, and the aperture is less dilated laterally, while the columellar margin ascends less obliquely; the hair-scars are also finer. Genus AMPHIDROMUS, Albers. Amphidromus, Albers, Die Heliceen, 1850, p. 138 (in part) ; Pfeiffer, Malak. Blatt. ii, 1856, p. 146 (in part); von Martens, Die Heliceen, ed. 2, 1860, p. 184; ibid., Preuss, Exp. Ost-Asien, Zool. Theil, ii, 1867, pp. 77 & 332; Semper, Reisen, Arch. Philipp. 2te Theil, vol. iii, 1877, p. 146; Fulton, A. M. N. H. ser. 6, xvii, 1896, p. 66; Pilsbry, Man. Conch, ser. 2, xiii, 1900, p. 127. TrPB, Helix perversa, Linn. Range. India (Sylhet), Burma, Farther India, Malay Archipelago, and Philippine Islands. " Shell of moderate size, dextral or sinistral, long-ovate, with 6-8 moderately convex whorls ; smooth (rarely ribbed) and light or bright-colored, yellow predominating, often with green or brown streaks, flames, or bands. Apical whorls smooth or obsoletely pitted. Aperture somewhat oblique, ovate, not contracted by teeth or folds ; peristome more or less thickened, expanded, or reflexed, the columellar margin reflexed, with a very weak fold or none. " Jaw thin and weak, with flat ribs crenulating the edges, liadula with broad V-shaped rows, the teeth of ' arboreal' type, with the side cusps brought near the median cusp, all the cusps broad ; outwardly the side cusps are split. Kidney extremely long and narrow, with reflexed ureter and closed secondary ureter. G-enitalia of typic
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