54 STROPHOCHEILUS-THAUMASTUS. 



GO, Viaje al Pacif., p. 63, pi. 6, f. 2, 3. MARTENS, Conch. Mittheil 

 ii, p. 157. COUSIN, Bull. Soc. Zool. Fr. 1887, p. 211, 212 (varr. 

 olivacea, nigricans, lutea, zebra. 



When immature, this species has a subtruncate columella, like S. 

 hartwegi. It is well distinguished by the pitted embryo and the 

 coloration. 



S. YANAMENSIS Morelet. PL 27, fig. 97. * 



Shell imperforate, oblong, solid, rugulose, in part granulated, 

 shining. Greenish-tawny, irregularly streaked with darker. Spire 

 short-conic, the apex obtuse, a little concave. Suture very narrowly 

 white-edged, irregularly crenulated on last whorl. Whorls 4i, 

 slightly convex, the earlier denuded of cuticle, impressed-granulate 

 under a lens, roseate ; penultimate whorl dot-banded ; last whorl 

 larger than spire. 



Aperture ample, semi-oval, white inside ; peristome somewhat 

 thickened, the right margin nearly straight ; columella calloused, 

 short, joining the basal margin at an angle. Alt. 58, diam. 25 ; 

 aperture, alt. 31, width 16 mill. (Morel.). 



Yanama, Peru (Angrand). 



Bui. yanamensis MOREL., Ser., Conch., iii, p. 171, pi. 8, f. 3. 

 PFR., Monogr., vi, p. 87. 



More ventricose than 8. thompsoni and hartwegi with fewer 

 whorls and larger aperture. 



S. VIRIATUS Morelet. PI. 27, fig. 99. 



Shell imperforate, ovate-conic, solid, longitudinally wrinkled" 

 Ashey-violaceous, marked with a few wide livid streaks. Spire 

 rather long, the apex obtuse, reddish. Whorls 4, convex, the ear- 

 lier smooth ; last whorl slightly longer than the spire. 



Columella thread-like, rather straight. Aperture oblong-oval,, 

 concolored within ; peristome simple, unexpanded, the right mar- 

 gin with a wide livid border inside and out ; columellar margin 

 somewhat thickened, narrowly reflexed, appressed. 



Alt. 57, diam. 28 mill. (Morel.). 



Niguapata, in the hot, dry land prevalent in the Santa Anna Val- 

 ley, Peru (Angrand"). 



Bulimus viriatus MOREL., Ser. Conch, iii, p. 170, pi. 7, f. 4. 

 PFR., Monogr., vi, p. 105. 



Described from two specimens wanting the epidermis. Although 

 the early whorls appear smooth, the lens shows them to be engraved 



