202 ORTHALICUS. 



callus ; columellar margin tuberculate and adnate. Alt. 71, diam. 29 

 mill.; aperture with peristome 37 long, 15 wide inside. (P/r.). 

 On the Maranon river in Colombia [now Peru] (Warscewicz). 



Bulimus Shuttleworthi ALBERS, Malak. Blatter i, 1854, p. 216 

 PFR. Monogr. Hel. Viv. iv, p. 371 ; Novit. Conch, i, p. 31, pi. 8, f. 

 14, 15. 



Probably allied to 0. yatesi. I have not seen the species. 



O. YATESI (Pfeiffer). PI. 43. 



Shell im perforate, fusiform-oblong, solid, smooth, brown oliva- 

 ceous with black bands interrupted by arrow-shaped buff markings. 

 Spire long-conic, obtuse ; suture lightly margined, whorls 8, a little 

 convex, the last slightly exceeding two-fifths the total altitude, 

 tapering at base. Columella calloused, strongly folded above. 

 Aperture' subvertical, elliptical oblong, subangulate at the base, 

 bluish-white inside ; peristome thickened, narrowly expanded, the 

 margins joined by dull flesh-colored callus. Alt. 82, diam. 32, 

 length of aperture inside 32, width 15 mill. (Pfr.). 



Peru: Moyobamba (Yates, type locality); Tarapoto (Moricand, 

 type loc.ality of latevittata); Tambo Yumbite, near Moyobamba, 1479 

 meters above the sea (Stiibel). 



Bulimus yatesi PFR., P. Z. S. 1855 p. 93, pi. 31, f. 5; Novit. 

 Conch, i, p. 63, pi. 18, f. 1, 2 ; Monogr. iv, p. 371 Porphyrobaphe 

 yatesi SHUTTL., Notitise, i, p. 90. Orthalicus (Porphyrobaphe) 

 yatesi MARTENS, Conchol. Mittheil. p. 159. Not B. jatesi Hupe. 

 Porphyrobaphe latevittata SHUTTLEWORTH, Notitia? Malac., i, p. 71, 

 pi. 5, f. 2, 3 (1856) Porphyrobaphe sublabeo Dohrn, ANCEY, Bull. 

 Soc. Malac. France vii, p. 153. 



The thick lip is fleshy or brownish ; and the columella either white 

 with a strong fold above (figs. 15, 17), or brown and straight below, 

 white and weakly folded above (fig. 16). The nepionic shell is 

 large, composed of 3J whorls, sculptured with fine more or less 

 anastomosing longitudinal wrinkles, forming a striolate pattern over 

 part and a pitted pattern over the rest of the surface. In 0. kelletti 

 only 2^ whorls compose the pitted nepionic shell. 



The original description of yatesi is given above, and fig. 17 is a 

 copy of the original figure. It is an extremely variable species, dis- 

 tinguished from the closely allied 0. kelletti by its bolder markings, 

 and the subangular production of the aperture at the base of the 



