222 DRYM^US, SOUTH AMERICAN. 



flexed, tawny-bordered outside and within; columellar margin little 

 dilated. Alt. 27, diarn. 15 mill.; aperture 16 mill, long, 9 wide 

 (Phil.}. 



Chanchamayo, Peru (Raimondi). 



Bulimus eurystomus PHIL., Malak. Bl., xiv, 1867, p. 68. PFR., 

 Novit. Conch., p. 343, pi. 81 , f. 7, 8 ; Monogr., vi, p. 48. 



D. SUBSIMILARIS Pilsbry, n. sp. PI. 44, figs. 15, 16. 



Shell imperforate, oblong-acuminate, slender, rather thin but mod- 

 erately solid. Fleshy-white, with two spiral series of small brown 

 spots on the spire, the spaces between spots white; dark stripes 

 running downward from some of the spots on the last whorl. Sur- 

 face glossy, with faint growth-wrinkles and almost effaced, minute, 

 close, spiral striation. Spire long, a little convexly conic; apex 

 corneous, rather obtuse. Whorls over 5i, moderately convex, the 

 last tapering below. 



Aperture long ovate, less than half the total length of shell, ob- 

 lique, whitish and showing the spots within, becoming lilac-purple 

 toward the lip; peristome expanded, white; columella cord-like, 

 with a long fold above ; parietal wall slightly purple-tinted. Alt. 

 23, diam.9, alt of aperture 11 mill. 



Habitat uncertain, probably western Brazil or eastern Peru, 



Much more slender than D. similaris, which it resembles in color- 

 pattern and texture. In subsimilaris there are no longitudinal stripes 

 on the spire, the aperture is far less ample, lilac within, and the col- 

 umellar lip is completely appressed and adnate throughout. De- 

 scribed from one specimen which was in a tray with D. serratus Pfr., 

 a species of widely different form. 



Group of D. expansus. 



D. EXPANSUS (Pleiffer). PI. 34, figs. 1-5. 



Shell large, deeply and broadly compressed-rimate, ovate-conic, 

 thin ; whitish, brownish, or rose-tinted white, variously streaked and 

 maculate with brown or purple- brown ; somewhat glossy, sculptured 

 with raised, thread-like rib-strice on the last whorl and a half, show- 

 ing under the lens more or less distinct traces of fine, incised spiral 

 striation. Spire conic with straight lateral outlines, the apex rather 

 obtuse, earlier 1$ whorls with typical Drymceus sculpture; whorls 

 6, moderately convex, the last rotund, the broad base somewhat 

 flattened, suture suddenly ascending behind the lip. 



