PLEKOCHEILUS-EURYTUS. 83 



Alt. 31, diam. 15 mill. ; aperture, alt. 18, width in the middle 9 mill. 



Province Antioquia, Colombia (Schlim). 

 ., P. Z. S., 1854, p. 290; Monogr., iv, p. 364; 

 Novit. Conch., i, p. 30, pi. 8, f. 8, 9. 



P. QUADRICOLOR Pfeiffer. PI. 34, figs. 56, 57. 



Shell imperforate Succinea-sh&ped, thin, striatulate ; buft' with 

 close, oblique, chestnut "lightning-streaks" and some wider straw- 

 colored streaks, serrate on front edge, and evanescent below the mid- 

 dle. Spire conic, rather obtuse. Whorls 4, nearly flat, the last a 

 little convex, about two-thirds the entire length. Columella thread- 

 like ; peristome very narrowly expanded throughout, roseate, its 

 ends joined by a very thin callus. Alt. 30 J, diam. 14 mill. ; aper- 

 ture, alt. 21, diam. 11 mill. (Pfr.) 



Chachopo, Prov. Merida, Colombia (Funck). 



B. guadricolor PFR., P. Z. S., 1847, p. 229 ; Monogr. ii, p. 18. 

 PHIL., Abbild. iii, p. 20, pi. 8, f.4. REEVE, Con ch. Icon., pi. 42, f. 

 263. 



Differs from B. veranyi in the bold, zig-zag brown streaks. 

 P. VERANYI Pfeiffer. PL 34, figs. 58, 59, 60, 61, 62. 



Shell ovate, subperforate, rather solid but thin ; " tawny, with 

 scattered chestnut dots and ornamented with separated buffer white 

 zig-zag streaks," or buff-brownish with indistinct scattered trans- 

 verse brown dots, and longitudinal buff ziz-zag streaks interrupted 

 into a net-work of >-shaped markings. Surface delicately but 

 densely granulose throughout, and with faint, spaced spiral cords. 

 Spire short, conic. Whorls 4J, the last descending in front. 



Aperture large, ovate; peristome white, narrowly expanded 

 above, broadly so toward the base ; columella white, narrow and 

 arcuate below, reflexed and folded above. Parietal callus a mere 

 transparent film. 



Alt. 27, diam. 17 ; alt. of aperture, 17 mill. 



Alt. 33, diam. 15 ; alt. of aperture, 20 mill. 



Chachopo, Prov. Merida, Colombia (Funck). 



B. veranyi PFR., P. Z. S., 1847, p. 230 ; Monogr. ii, p. 49. PHIL., 

 Abbild., iii, p. 20, pi. 8, f. 5, 9. REEVE, Conch. Icon., pi. 42, f. 262. 



It is more conoidal, less swollen above than P. succinoides, the 

 aperture is smaller, parietal wall light colored. The papery light 

 markings are sometimes nearly absent. 



