PLEKOCHEILUS-EURYTUS. 81 



lar chestnut, longitudinal streaks. Spire moderately lengthened, 

 apex rather obtuse ; suture impressed. Whorls 5, a little convex, 

 the first two shining, corneous white, the last whorl slightly descend- 

 ing, a little longer than the spire, somewhat inflated. Aperture ob- 

 long-ovate ; peristome somewhat thickened, white, the ends joined 

 by a rather thick blue-gray callus ; columellar margin adnate, basal 

 and outer margins dilated, reflexed throughout. Alt. 32, diam. 23 2 

 mill. (Crosse*). 



Quito, Ecuador (Paz). 



B. corydon CR., Journ. de Conchyl., xvii, 1869, p. 185 ; xviii, 

 1870, p. 104, pi. 6, f. 6. 



P. PHCEBUS Pfeiffer. Unfigured. 



Shell imperforate, ovate-fusiform, thin, lightly striatulate, little 

 shining ; pale buff, irregularly painted with streaks and spots of 

 brown. Spire conic, rather acute. Whorls oi, slightly convex, 

 the last not descending, a little longer than the spire, more swollen, 

 very obsoletely angulated in the middle. Columella compressed, 

 lightly arcuate. Aperture little oblique, angulate-elliptical ; peri- 

 stome roseate, margins joined by a brownish callus, the right mar- 

 gin expanded, basal margin subproduced, columellar margin nar- 

 row. Alt. 31, diam. 15 mill.; aperture, alt. 16, width 10 mill. 



Ecuador (Mus. Cuming). 

 B. phcebus PFR., P. Z. S., 1862, p. 274; Monogr., vi, p. 9. 



P. TAQUINENSIS Pfeiffer. Uafiyured. 



Shell subperforate, ovate-oblong, rather solid, longitudinally 

 minutely striated and malleated ; painted with indistinct oblique 

 reddish streaks under a brownish-olive cuticle. Spire convex-conic, 

 rather obtuse ; whorls 4, moderately convex, the last a little longer 

 than the spire, rounded at base. Columella lightly folded. Aper- 

 ture subvertical, acuminate-oval, pearly inside ; peristome somewhat 

 thickened, flesh-colored ; right margin revolute, columellar margin 

 subdilated, horizontally spread and reflexed. Length 40, diam. 18 

 mill.; aperture with peristome 20 mill, long, width inside 11 mill. 



Taquina, Sierra Nevada di Sta. Maria, Colombia, 9000 ft. alt. 

 (Mus. Cuming). 



B. taquinensis PFR., P. Z. S., 1854, p. 290 ; Monogr., iv, p. 380. 



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