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 strire. 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. PI. 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. 



7. S, of Colombia, in Magdalena Valley (Wallis) ; Prow. Ocana 

 (Sehlim) ; 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. 



