136 BULIMULUS. 



ribs. Aperture small, its margins scarcely converging. Columella 

 straight and a little reflexed ; lip simple and acute. Color pale ful- 

 vous, irregularly ornamented with brownish longitudinal spots and 

 streaks; becoming blackish towards the apex. Length 13, width 3 

 mill. ; aperture 3 mill, high, 2 wide (Dautz). 



Peru : locos (Baer). 



Peronaeus iocosensis DAUTZ., J. de C. xlix, p. 131 (July, 1901) ; 

 p. 213,'pl. 8, f. 1, 2. 



Section Ataxus (Vol. x, p. 130). 

 B. MONIEZI Dautzenberg. PI. 23, figs. 98, 99, 1, 2. 



Shell not very solid, rather shining, broadly and deeply umbili- 

 cate. Spire long-conic, attenuated towards the apex. Whorls 9-11, 

 slightly convex, separated by impressed sutures; the first 2 whorls 

 smooth, the rest longitudinally, obliquely, elegantly costulate, there 

 being about 35 riblets on the penultimate whorl. Last whorl be- 

 coming more or less free towards the aperture. Umbilicus pervious, 

 acutely margined. Aperture long-ovate, subangulate above and 

 below, compressed on both sides ; peristome continuous, acutely 

 margined, the inner lip a little reflexed. Color whitish ornamented 

 with two brown bands; apex violet-brown. Length 14, width 6^, 

 aperture 4 mill, high, 2^ wide (Dautz). 



Andean region of Peru. 



Bulimulus (Bostryx} moniezi DAUTZ ENB., Journ. de Conchyl. 

 1896, p. 224, pi. 7, f. 3. 



A color-form albescens (figs. 98, 99) is whitish without bands, but 

 retaining the dark apex. 



It varies in the degree to which the last whorl becomes free. B. 

 holostoma Pfr. is a smaller shell, with more deeply constricting 

 sutures and short aperture. B. moniezi seems closely related to B. 

 tubulatus Morel, (vol. x, p. 132). 



Section Lissoncme Pils. (Vol. x, p. 154). 

 B. DEPSTUS (Reeve). PI. 23, figs. 94, 95, 96. 



Vol. 10, p. 181. The original type of this species was a small 

 dark-colored specimen. A large series collected by Prof. Steere and 

 others taken at Cajabamba, Peru, by Baron, show that the species I 

 defined as B. flagellatus (Manual x, p. 166) is an elongated form of 

 the same species. 



