74 PLEKOCHEILUS-EURYTUS. 



This species and the next seem to belong in the immediate vicinity 

 of the rather stouter P. coloratus Nyst. Cousin (Bull. Soc. Zool. 

 Fr. 1887, p. 208) thinks roseolabrum a rose-lipped form of corydon* 



P. EROS Angas. PI. 38, figs. 98, 99. 



Shell imperforate, oblong-ovate, thin. Very finely and closely 

 shagreened all over, the apical whorls marked with irregular lon- 

 gitudinal stride. Light greenish-olive, ornamented with small spots- 

 and cloudy patches of a darker color. Spire very short, apex 

 obtuse, pink. Whorls 4, rather convex, the last large. 



Aperture ovate, more than two-thirds the length of the shell, effuse 

 below ; outer lip slightly expanded and reflexed, which together with 

 the columella and the interior of the aperture, is of a bright rose 

 color. Alt. 36, diam. 17 mill. (Angas). 



Ecuador* 



Bulimus (Eurytus) eros ANG., P. Z. S., 1878, p. 312, pi. 18, f. 6, 7. 



A beautiful species, characterized by its closely granulated sculpt- 

 ure, and the rosy coloration of the mouth. (Ang.). 

 The aperture is larger than in P. roseolabrum Smith. 



P. COLORATUS Nyst. PL 32, figs. 41, 42, 43. 



Shell perforated, ovate, varying from thin to solid ; straw-yellow 

 or pale buff, with scattered spots or irregular streaks (formed by 

 coalescence of spots) of dark brown, light-edged on the left side in 

 the typical form. Surface dull, wrinkle-striate and very densely 

 granulate, the granules following the wrinkles to some extent. 

 Spire conic ; whorls 4f , the first planorboid, the next minutely criss- 

 cross granulate; last whorl large, its latter third descending. 



Aperture ovate, showing the color-pattern inside. Peristome ex- 

 panded and reflexed, rose-pink. Columella widened and folded 

 above, and with the light or heavy parietal callus, pink. 



Alt. 45, diam. 26 ; aperture, alt. 27 mill. 



Alt. 56, diam. 36 ; aperture, alt. 35 mill. 



U. S. of Colombia, in Magdalena Valley (Wallis) ; Prov. Ocana 

 (Schlim) ; near Quito, Ecuador (Lattre). 



B. coloratus NYST, Bull. Acad. Roy. Brux., xii (1), p. 228, pi., f. 2 

 a, b (1845). PFR., Monogr., ii, p. 48 ; iii, p. 314 ; iv, p. 377 ; vi, p. 

 22; Novit. Conch., i, p. 29, pi. 8, f. 4, 5. REEVE, Conch. Icon., pi. 

 24, f. 155. Mouss., Malak. Bl.,xvi, p. 173, 1869. DOHRN, Jahrb. 

 D. Malak. Ges., ii,1875, p. 302. 



