DRYM/EUS, SOUTH AMERICAN. 283 



total length, attenuated at base and subcompressed. Aperture sub- 

 vertical, acuminate oblong ; peristome simple, thin, the right mar- 

 gin unexpanded, columellar margin lightly arcuate, dilated above, 

 reflexed, overarching the umbilicus. (Pff.). 



Alt. 31, diam. 11 mill. ; aperture 12=i mill, long, inside 5.1 wide. 



Alt. 37, diam. 12 mill. ; aperture 16 mill, long, inside 6 wide. 



Trujillo, Peru (Raimondi). 



Bulimus canarius Phil, (label), PFR., Malak. BL, xiv, 1867, p. 

 76 ; Novit. Conch., p. 334, pi. 80, f. 5-7 ; Monogr., vi, p. 129. 



D. MORBIDUS (Philippi). PI. 48, figs. 45, 46. 



Shell umbilicate-perforate, oblong-turrited, rather smooth, thin ; 

 whitish, the apex yellow. Whorls 7, rather flat, the embryonal 

 very smooth, last whorl three-sevenths the shell's length, appressed 

 above. Aperture somewhat oblong ; columella perpendicular, rather 

 straightened, compressed ; peristome thin, subreflexed, especially at 

 the upper part ; columellar lip triangularly dilated above. Alt. 32, 

 diam. 14 mill. ; aperture 14 mill, long, 65 wide. (Phil.). 



" Hacienda de Sunchobamba" near Cajamarca, Peru (Raimondi). 



Bulimus morbidus PHIL., Malak. BL, xiv, 1867, p. 70. PFR., 

 Novit. Conch., p. 341, pi. 81, f. 5, 6 (not f. 3, 4) ; Monographia, vi, 

 50. 



D. CHENUI (Philippi). PI. 48, figs. 47, 48. 



Shell subperforate, oblong-conic, solid, striatulate, whitish [or 

 very pale tawny, covered with a pale olivaceous cuticle]. Whorls 

 6, a little convex, the last hardly as long as the spire. Aperture 

 ovate ; peristome simple, rather thick, columellar margin reflexed, 

 nearly covering the umbilical chink. Alt. 29, diam. 16$, alt. of 

 aperture 13, width inside 7 mill. (Phil.}. 



Pachicamac, near Lima, Peru (Phil., Isern.). 



Bulimus chenui PHIL., Malak. Bl., xiv, 1867, p. 72.-PFR., Novit. 

 Conch., p. 344, pi. 81, f. 11, 12; Monogr., vi, 146. HIDALGO, 

 Journ. de Conch., 1870, p. 58 ; Viaje al Pacifico,-p. 113. 



Philippi described dead specimens, Hidalgo supplementing his 

 description of the color from specimens collected by Isern. He 

 further notes that some granulation appears on the longitudinal 

 stride under strong magnification, and gives the dimensions, alt. 27, 

 diam. 13 mill. 



