154 PORPHYROBAPHE. 



sometimes almost obsolete there ; three or four broad blackish varices 

 appearing on the penultimate and last whorls. Surface slightly glossy, 

 with rather strong, fold-like striae on the spire, the last whorl smoother, 

 with a plicate band below the suture, and decussated with irregular 

 spiral grooves. Whorls 6, the earlier 2^ smooth, forming the nepi- 

 onic shell ; last whorl convex, sometimes ridged at the varices ; apex 

 obtuse. 



Aperture somewhat oblique, ovate, pure white within; peristome 

 black, thick, somewhat reflexed ; columella slightly folded, nearly 

 straight, mainly black ; a black parietal callus deeply entering the 

 aperture. 



Alt. 70, diam. 38, longest axis of aperture 39 mill. 



Pallatanga Ecuador (Fraser). 



Bulimus saturanus (error for saturnus) PFR., P. Z. S. 1860, p. 136. 

 B. satuanus (error for saturnus) PFR., P. Z. S. 1860, Mollusca, 

 pi. 51, f. 6. Bulimus saturnus PFR., Malak. Blatter, viii, 1861, p. 

 11; Monogr. vi, p. 14. Porphyrobaphe saturnus DOHRN, Jahrb. 

 D. M. Ges. ix, 1882, p. 111. 



I have below reproduced Pfeiffer's description because his type 

 (fig. 25) was much more copiously striped than any of the specimens 

 I have seen. The " lilac-flesh " ground color is concealed in good 

 specimens by a thin yellowish-olive cuticle, which is easily rubbed 

 off, and remains chiefly in the grooves of the spiral and growth striae, 

 usually as fine spiral capillary lines. The varices are black and con- 

 spicuous, usually three in number, one being on the penultimate, the 

 others on the last whorl. The columella becomes bluish-white towards 

 its insertion. There is considerable variation in size, the smallest 

 specimens I have seen being about 60 mill, long, while Dohrn men- 

 tions one measuring alt. 82, diam. 33, length of aperture 41 mill. 

 Pfeiffer's original description is as follows : 



Shell imperforate, somewhat fusiform oblong, solid; of a lilac-flesh 

 tint flamed with brown. Spire conic, the apex rather acute, white. 

 Whorls 6J, the upper smooth, the rest obliquely striated, last whorl 

 smoother, having several wide blackish varices, a little shorter than 

 the spire, tapering at the base. Columella thick, twisted, black. 



Aperture subvertical, acuminate, oblong; peristome black, nar- 

 rowly reflexed, the margins joined by a black callus. 



Alt. 76, diam. 33, aperture including peristome 38 mill. long. 



