BULIMULUS-PLECTOSTYLUS. 



In contour B. chilensis is much like B. peruvianus, but it is far 

 smoother, finely granulose, with less twisted columella and different 

 color-scheme. It is oviparous. 



The locality, " Ilo, Peru," given for this species in d'Orbigny's 

 Prodrome and repeated by Pfeiffer, was evidently an error, as he 

 does not mention it in the " Voyage," and the place lies far to the 

 north of the known range of the species. Partula flavescens King 

 was apparently based upon the young of this species. 



B. REFLEXUS (Pfeiffer). PI. 6, figs. 93, 94, 95. 



Shell imperforate, thin, fusiform -ovate ; yellowish corneous with 

 obliquely longitudinal streaks of white and narrow, spaced chestnut 

 streaks, sometimes interrupted into girdle of narrow vertical lines, or 

 occasionally accompanied by dots on the white streaks, all dark 

 marking abruptly discontinued below, the baso-columellar tract light, 

 not streaked. Surface smooth and shining to the eye, but under the 

 lens showing a delicate granulation produced by fine growth-wrinkles 

 crossed by most minute, irregular and partly obsolete spiral striae; 

 the apical whorls sculptured with minute, close, zigzag-waved lon- 

 gitudinal striae. Spire long-conic ; whorls 5, very feebly convex, 

 the latter half of the last suture descending obliquely to the others. 



Aperture long-ovate, somewhat oblique, marked within ; peristome 

 thin and simple ; columella concave below, straightened above, its 

 edge reflexed and appressed. 



Alt. 36J, diam. 16 mill.; alt. of aperture 19 mill. 



Alt. 37, diam. 14f mill. ; alt. of aperture 18 mill. 



Pichidanque, near Coquimbo, Chili, on leaves of Puya coarctata 

 (Bridges). 



Succinea reflexa PFR., P. Z. S., 1842, p. 187 ; Symbolse, ii, p. 56. 

 Bulimus reftexus PFR.,Symbolse, iii, p. 56 ; Monogr., ii, 147 ; Con- 

 chyl. Cab., p. 215, pi. 60, f. 9, 10. REEVE, Conch. Icon., pi. 85, f. 

 628 (1850). GAY, Hist, de Chile, viii, p. 105, pi. 1, f. 3, 3a. 



A delicate form of the B. chilensis group, which Bridges found 

 living on the leaves of a Bromeliaceous herb. It differs from chil- 

 ensis in the thinner texture, more delicate granulation, slender con- 

 tour and the pattern of coloration. In B. chilensis the dark streaks 

 when present are not abruptly discontinued at the base, leaving a 

 oircum-columellar clear area such as seems invariable in this species. 



B.perelegans is a smoother shell, with more white strigation and 

 without the immaculate baso-columellar tract of reflexus. 



