272 DRYM.EUS, SOUTH AMERICAN. 



D. EDMULLERI (Albers). PL 47, figs. 22, 23. 



Shell narrowly perforate, fusiform-oblong, rather thin, longitudi- 

 nally striated ; buff- white, ornamented with black-brown wavy 

 streaks interrupted in bands. Spire turrited, rather acute. Whorls 

 6=}, rather flat, the last a little shorter than the spire, tapering at 

 base, distinctly striated. Columella receding, slightly folded. 

 Aperture little oblique, oblong ; peristome thin, the margins sub- 

 parallel, right margin a little expanded, somewhat sinuate above; 

 columellar margin buff, dilated and subappressed. Alt. 29*, diam. 

 10 ; alt. of aperture 14*, width 6 mill. (P/r.). 



On the Maranon River, Colombia (Warszewicz). 



Bidimus edmulleri ALB., Malak. Bl., i, p. 218 (1854). PFR., 

 Novit. Conch., i, p. 42, pi. 11, f- 3, 4 ; Monogr., iv, p. 408. 



Seems allied to D. scitulus, but the streaks are festooned. 



D. TRUJILLENSIS (Philippi). PL 48, figs. 24, 25. 



Shell perforate-umbilicate, oblong-turrited, subfusiform, thin, 

 slightly striate, shining. White, ornamented with close scarlet or 

 reddish streaks. Spire turrited, somewhat obtuse, the apex white; 

 whorls 7, a little convex, the last three-sevenths the total alt. Aper- 

 ture oblong, colored within like the outside; columella strongly 

 twisted ; peristome simple, acute, right margin subsinuate above, 

 columellar margin reflexed, not closing the perforation. Alt. 34, 

 diam. 13 ; aperture 15 mill, long, 6 wide. (Phil.). 



Trujillo (Raimondi, Stoltzman), and Huamachuco (Paz), Pent. 



llulimus trujlllensis PH., Malak. BL, xiv, p. 73 (1867). PFR., 

 Novit. Conch., p. 333, pi. 80, f. 1, 2 ; Monogr., vi, p. 129. HIDALGO, 

 Journ. de Conch., 1870, p. 48. LUBOMIRSKI, P. Z. S., 1879, p. 

 724. 



Hidalgo remarks that in the fully adult example collected by 

 Paz the shell is more solid and the umbilical perforation less appar- 

 ent than in the original specimens. Probably the following species 

 is merely a form of trujlllensis. 



D. LAMAS (Higgins). PL 48, figs. 26, 27. 



Shell subperforate, oblong-turrited, thin, nearly smooth, irregu- 

 larly lightly striated. Whitish, ornamented with chestnut streaks. 

 Spire lengthened, the apex acute. Whorls 7, rather flat, the last 

 rounded at base ; columella rather straightened. Aperture little 

 oblique, oval, chestnut colored inside ; peristome simple, unex- 



