198 DRYM^US, SOUTH AMERICAN. 



tudiual, sinuous, interrupted and disposed in three transverse series 

 on the last whorl. Spire long, acuminate; whorls 8, somewhat con- 

 vex. Aperture oblong, deep purple in the throat ; the peristome 

 thin, expanded, acute; columella twisted, subtruucate below; outer 

 lip bordered with white, columella with an oblique yellowish-white 

 band (Hupe). Alt. 42*, diam. 15 ; alt. of aperture 23 mill, (from 



Peru (Castelnau). 



Bulimus beyerleanus HUPE in Castelnau, Anirn. Notiv. on rares 

 1'Amer. du Sud, Moll., p. 50, pi. 6, f. 6. PFR., Malak. Bl. 1859, p. 

 40 ; Monogr., vi, p. 53. 



Probably a form of D. zoographicus, as claimed by Morelet. 



D. INTERPICTLTS (v. Martens). PI. 34, figs. 12, 13. 



Shell imperforate, elongated, thin, smooth, shining; isabelline,. 

 painted with wide black stripes which are dotted with isabelline. 

 Spire conic, elongated ; whorls 7, rather flat ; columella slender, 

 twisted. Aperture perpendicular, flexuous, less than half the total 

 length, ovate-oblong, violaceous within ; peristome white, the outer 

 and basal margins rather widely expanded, columellar margin nar- 

 rowly so below, rather straight, reflexed above and adnate ; parietal 

 wall violaceous ; throat violescent. Alt. 40, greatest diam. 15, lesser 

 11 mill.; aperture 19 mill, long, 6* wide (Martens'). 



On the Chanchamayo, a tributary of the Ucayali River, eastern 

 Peru (Thamm) ; Junin (Jelski). 



Bulimulus (Drymczus) interpictus Martens, Malak. BL, xiv, 1867, 

 p. 144. Bulimus (Drymce.us) interpictus LUBOMIRSKI, P. Z. S., 1879, 

 p. 723. Bulimus interpictus PFR., Novit. Conch., p. 349, pi. 82, f. 8, 

 9 ; Monogr., vi, p. 21. 



Nearly allied, says von Martens, to B. zoograpldcus Orb.,yungas- 

 ensis Orb. and beyerleanus Hupe, from the same region, but well 

 differentiated from all of them by having the lower end of the aper- 

 ture directed more outward, correlated with the nearly perpendicu- 

 lar direction of the lower half of the columellar margin, and by the 

 character of the markings. The three dark bands which connect 

 the streaks in the species named above, fail completely in this, and 

 the streaks are wider, sometimes forked toward the suture as in the 

 Javan B.furcillatus Mouss., and on the last two whorls are always 

 variegated with dots or fine vertical wavy lines of the ground color. 

 B. incequalis is wider and without the light dots upon the stripes. 



