132 AURIS. 



P. PIPERATOIDES Pilsbry, n. sp. PL 21, fig. 66. 



Shell imperforate, ovate with conic spire, thin ; whitish-corneous, 

 profusely dappled with chestnut-brown ; the first whorl brown, shal- 

 lowly and minutely sculptured with waved wrinkles ; apex obtuse. 

 Whorls 4f , slightly convex, regularly and slowly increasing, the last 

 whorl long-oval ; surface irregularly and rather closely and finely 

 wrinkled or plicatulate, without spiral lines. Suture impressed, the 

 last third of a whorl rapidly descending. Aperture symmetrically 

 ovate, acute above, quite oblique, whitish and spotted within ; peri- 

 stome white, the edge very narrowly expanded, the basal and colu- 

 mellar margins evenly arcuate, outer lip only feebly arcuate above. 

 Length 29, diam. 17J, longest axis of aperture 18 mill. 



Colombia. 



Smaller than P. piperitus, without spiral sculpture or the pepper- 

 ing of small dots, and having the outer lip much less arcuate above. 



P. PIPERITUS (Sowb.). Vol. x, p. 89. 



The reference to Reeve should read " B. piperatus." According 

 to Pfeiffer (Nomenclator Hel. Viv. p. 227), Plectostylus pulicarius 

 Beck is identical. It is a nude name. 



P. TAYLORIANUS (Reeve). Vol. x, p. 90. 



Reported from Nanegal, Ecuador, by von Martens, from speci- 

 mens collected by Stiibel (C. Mittheil., p. 158). 



Genus AURIS Spix (Vol. x, p. 95). 



Mr. S. Pace, in Proc. Malac. Soc. Lond. i, p. 151, has described 

 and figured the anatomy of A. aurissciuri, a species of the section 

 Eudolichotis. 



A. ICTEROSTOMA (von Martens). 



Shell perforate, subglobose-conic, rather solid, striatulate, yellowish- 

 white, ornamented with repeated pale brown, waved streaks, and 

 three narrow violet-brown spiral bands. Whorls 5J, rather convex, 

 the first smooth, white, the last rather swollen, rounded, more dis- 

 tinctly rib-striate towards the base. Aperture ear-shaped, the per- 

 istome reflexed, bright yellow, outer lip narrow above, widely ex- 

 panded below ; basal margin rounded, with a tooth-like callus at the 

 insertion of the columellar margin, the latter being twisted inwardly, 

 broadly and triangularly expanded outwardly ; parietal wall covered 



