16 STROPHOCHEILUS-BORUS. 



? Var. kremnoicus d'Orbigny, (pi. 5, fig. 28). Two of d'Orbigny's 

 figures of B. kremnoicus agree with maximus; the third is decidedly 

 more elongated with smaller mouth. If this proves to be racially 

 constant, the name var. kremnoicus may be retained for it. 



S. HUASCARI Tschudi. PI. 5, fig. 27. 



Shell elongated, the suture hardly constricting, the last and greater 

 part of the next earlier whorl dark yellow-brown, strongly wrinkle- 

 striate, with more or less numerous malleations and traces of fine 

 spiral striae ; last whorl not swollen sack-like beneath. Aperture 

 half the shell's length or a little less, its breadth (measured inclusive 

 of the rather narrow columellar reflection) three-fifths the length. 

 Angle between columella and parietal wall 140. (Martens). 



Alt. 105, diam. 53 mill. (Tschudi). 



Alt. 99, diam. 51 ; apert. alt. 52, width 32 (inside 24). 



Eastern spur of the Peruvian Cordillera between Chanchamayo and 

 Tullumayo (Tschudi) ; Chanchamayo (Thamm). 



Balimus huascari TSCHUDI, Archiv f. Naturg. xviii, 1852, p. 186. 

 MARTENS, Novit. Conch, v, p. 5, pi. 141, f. 3,4. B. maximus var. 

 minor PFR., Monogr. ii, p. 19, and iii, p. 303. B. lacunosus Orb.^ 

 REEVE, C. Icon, v, f. 208. HUPE in Casteluau, p. 27, pi. 5, f. 1. 

 B. sanctce Crucis Orb., MARTENS, Mai. Bl. xiv, p. 138, 1876. 



Seems closely allied to S. maximus, but is smaller with less gibbous 

 base. 

 S. SANTACRUZII d'Orbigny. PL 4, fig. 3. 



Shell narrowly ovate-conic with rather slender, and comparatively 

 acute spire. Cuticle dark brown or chestnut, the surface when it i& 

 removed purplish-red, with a white band below the suture. Spire 

 regularly tapering ; suture somewhat constricting, the latter part of 

 penultimate whorl rather bulging. Nepionic shell composed of 31 

 whorls, the first one smooth, the others with strong narrow radial 

 riblets, which on the latter half of the last nepionic whorl hardly 

 reach the suture below, and become unequal, every second, third or 

 fourth riblet being stronger and much longer than those intervening. 

 Following whorls less than two, irregularly wrinkle-striate ; penult- 

 imate and antepenultimate whorls finely spirally granulated. 



Aperture slightly more than half the shell's length, narrowly 

 ovate-pear-shaped ; outer lip evenly curved, narrowly subreflexed 

 and thickened, white ; columella concave with a weakly convex 



