130 AMPHIDROMUS, GROUP II. 



collection of G. H. Clapp, a couple of brown stripes precede the varix 

 stripe. Tlie size varies within wide limits, some being as small as 

 43 mill. long. 



Var. appressus ('Mousson ' Martens). PI. 47, fig. 7 ; pi. 46, fig. 15. 



Shell dextral [or sinistral], nearly covered perforate, conic-elon- 

 gate, solid, closely, regularly and delicately striate, glossy, pale isa- 

 belline, whitish above, lacking varices. Spire long, almost regularly 

 conical, the apex rather acute, buff; suture oppressed, white, more 

 distinctly striate. Whorls 7 to 7-|, a trifle convex, the last two-fifths 

 the total length, not inflated, rounded basally. Aperture rather ob- 

 lique, oblong- semi-elliptical, whitish and glossy within ; peristome 

 callous, white, broadly expanded and narrowly revolute, the margins 

 joined by a rather thick milk-white callus; right margin regularly 

 and slightly arched, columellar margin slightly receding, somewhat 

 twisted and very much dilated above, almost appressed, nearly clos- 

 ing the narrow umbilicus. Length 50-54, diam. 23 mill. (Pfr.). 



Java (Zollinger); at Gunung Gedeh (Strubell). 



Bulimus appressus Mousson in coll., MARTENS, Ostas. Landschn. 



p. 353 (1867) PFR., Monogr. vi, p. 26 (quoting v. Mart.); Novit. 



Conch, iv, p. 34, pi. 116, f. 4, 5 ; Monogr. viii, p. 41. Amphidromus 

 appressus (v. Mts.) BOETTGER, Bericht Senck. naturforsch. Ges. in 

 Frankfurt a. M., 1890, p. 145, pi. 5, f. 8 A. palaceus var. appressa 

 (Mouss.) Pfr., FULTON, Ann. Mag. N. H. (6), xvii, p. 72. 



The type was dextral (pi. 47, fig. 7), but Boettger figures a 

 sinistral example from Gunung Gedeli (pi. 46, fig. 15), of a pale 

 sulphur color. I have not seen the species, which may well prove 

 to be, as Mr. Fulton holds, a small-mouthed, elongate variety or 

 subspecies of A. palaceus. 



Subsp. TENER Martens. 



A delicate, thin shell, with the last whorl comparatively large ; 

 pale brimstone yellow. Alt. 46, diam. 28, aperture 25-^ mill. 

 (Martens). Both sinistral and dextral. 



Bulimus perversus tener MARTENS, Ostas. Landschn., p. 350. 

 ??Bnlitmis aureus SWAINS., Zool. Illustr. i, pi. 47, upper and lower 

 figures. 



I refer to this form, which was described as a variety of perversus, 

 a series of shells (pi. 46, figs. 16, 17, 18) from Java which are 

 thinner and far paler than A. perversus, whitish toward the apex and 



