PLEKOCHEILUS-EURYTUS. 85 



labris PFR., P. Z. S., 1855, p. 7 ; Novit. Conch., i, p. 36, pi. 10, f. 1, 2 ; 

 Monogr., iv, p. 364. 



A remarkable and well-named species, differing from P. veram/l 

 and scytodes in the larger body whorl, black-brown parietal wall, 

 etc. The specimens before me support Dohrn's statement that 

 B. latilabris (pi. 34, figs. 67, 68) is a synonym. 



P. CALLIOSTOMA Dohrn. PI. 34, figs. 69, 70. 



Shell Succinea-like, imperforate, thin, pellucid ; corneous-yellow, 

 painted with irregular streaks and spots of whitish, and banded with 

 brown at the suture. Spire conic, rather acute; suture distinct. 

 Whorls 4, rapidly enlarging, the upper striated, the last whorl stri- 

 ated and densely granulated, very large, the base dilated, rounded, 

 deeply descending in front. Aperture ample, acuminate-oval ; peri- 

 stome thin, violaceous-rose, expanded and reflexed throughout, the 

 margins joined by a wide, thin, brown-violet callus ; columellar 

 margin arcuately ascending. Columella open as far as apex (seen 

 from below). Length 29, diam. 15 mill. ; aperture, length 22, width 



14 mill. (Dohrn). 



Province Antioquia, U. S. of Colombia. 



Bulimus (Eurytus) calliostoma DOHRN, Jahrb. D. M. Ges., ix, 

 1882, p. 103, pi. 3, f. 1,2. 



Nearest allied to B. succinoides from the same region, but distin- 

 guished by the red lip. All other species of this group have the 

 spire higher and mouth smaller. (D.). 



Group of P. castaneus. 

 Ovate, rather obese, the peristome narrowly expanded. 



P. CASTANEUS Pfeiffer. PI. 35, fig. 73. 



Shell narrowly perforate, ovate, solid ; unicolored chestnut. Sur- 

 face showing distinct growth-wrinkles cut by numerous more spaced, 

 shallow and rather wide spiral sulci, on the upper part of body-whorl, 

 cutting the wrinkles into narrow spiral girdles of long, vertical gran- 

 ules ; on the middle and lower part of body-whorl not granulate, 

 obscurely latticed and malleated by oblique short impressions. Spire 

 small, conic ; whorls 4J, the first planorboid with sunken tip, white 

 above, the next most minutely and densely granular; last whorl 

 rapidly enlarging. 



Aperture large, ovate, brown inside ; peristome narrow, brown, 

 the outer lip not thickened, hardly noticeably expanded ; columella 



