256 DRYM^US, SOUTH AMERICAN. 



15 ; pi. 50, fig. 77). The exact locality of this form is not known, 

 but it is probably from the province of Sao Paulo. Alt. 36, diam. 

 20, length of aperture 20 mill. Another specimen (the one figured 

 on pi. 51) is smaller. Alt. 33, diam. 18, length of aperture 18 J 

 mill. The latter is in U. S. Nat. Mus. 



Group of D. glaucostomus. 



D. GLAUCOSTOMUS (Albers). PI. 39, figs. 46, 47. 



Shell openly rimate-umbilicate, ovate-conic, solid ; white, with three 

 blackish bands conspicuously dotted with ivhite, and usually connected 

 at intervals by vertical streaks, the upper band often interrupted 

 into spots. Shining, with slight growth lines and very close, fine 

 but distinct spiral incised lines. Apex white with typical sculpture. 

 Whorls 6, slightly convex, the last wide, convex, ascending in front, 

 broadly rounded beneath. 



Aperture large, white with three black bands inside ; peristome 

 expanded, extremely broad, deep purple with a white edge ; columellar 

 margin impressed and grooved at its root, then bending forward ; 

 columella with a short, convex spiral fold above. Alt. 33, diam. 

 19 ; alt. of aperture 19* mill. 



Venezuela: Mountains between Pto. Cabello and Valencia, 2000 

 ft. above the sea, on palm trees (C. F. Starke) ; Cumbre del Valen- 

 cia (Simon). 



Bulimus glaucostomus ALBERS, Zeitschr. f. Malak., 1852, p. 32.- 

 PFR. in Conchyl. Cab., p. 153,.pl. 48, f. 11, 12 ; Mouogr., iii, p. 332. 

 -Otostomus glaucostomus MARTENS, Binnenmoll. Venez., in Fest- 

 schrift zur Feier des 100 Jahrigen Bestehens der Ges. Naturf. 

 Freunde zu Berlin, p. 181 (1873). Drymceus glaucostomus JOUSSE- 

 AUME, Mem. Soc. Zool. de France, ii, 1889, p. 241. 



A beautiful and very distinct species, quite constant in form and 

 coloration. 



Group of D. trigonostomus. 



D. TRIGONOSTOMUS (Jonas). PI. 39, figs. 34, 41, 42,43, 44, 45. 



Shell openly rimate-umbilicate, fusiform, moderately solid; whit- 

 ish, (1) uniform or (2) with 4 or 5 spiral reddish-brown or purplish 

 bands, or (3) with three bands of square spots above, two continuous 

 bands below, or (4) fleshy-brown with darker oblique streaks. Sur- 

 face shining, smooth, with light growth-lines, and fine spiral incised 



