BULIMULUS-BOSTRYX-LISSOACME. 1 57 



light bauds. Surface rudely, coarsely and irregularly wrinkled by 

 growth-lines. No spiral sculpture. Spire conic, rather attenuated 

 above, apex mamillar, smooth, brownish or white. Whorls 6J to 

 7, convex below the deep sutures. 



Aperture ovate, lilac tinted within, oblique, usually not half the 

 length of shell. Outer lip thin and sharp, unexpanded ; columella 

 slightly concave, lilac tinted, the coluruellar lip dilated above. 

 Parietal callus thin, roseate or white. 



Alt. 29, diam. 16 mill. ; alt. of aperture 12f mill. 



Alt. 23J, diam. 14? mill.; alt. of aperture 12 mill. 



Peru, at Arica (Hennah) and Tacna (Angrand, Paz), on cacti in 

 sandy places. 



B. hennahi GRAY, Spicil. Zool., i, p. 5, pi. 5, f. 5 (1830). FER., 

 Bull. Sci. Nat, xvi, 1829, p. 468. ORBIGNY, Voy. dans 1'Amer. 

 Merid., p. 283, pi. 30, f. 3, 4. PFR., Monogr., ii, p. 197; vii, p. 

 163 ; Conchyl. Cab., p. 198, pi. 55, f. 7, 8. REEVE, Conch. Icon., 

 pi. 88, f. 148 b. MORELET, Ser. Conch., iii, p. 184. HIDALGO, 

 Viaje al Pacif.. Mol., p. 87 ; Journ. de Conch., 1870, p. 52. MAR- 

 TENS, Conch. Mittheil., pp. 162, 209. B. rubescens REEVE, Conch. 

 Icon., pi. 23, f. 148. Bulinus hjchnorum SOWB., Conch, lllustr., f. 

 81, 82 (not Bui. lictienorum Orb., see p. 145 of this vol.). Helix 

 cactorum ORB., Revue Zool., 1835, p. 10. B. virginalis MOREL., 

 Journ. de Conch.. 1860, p. 372. 



The coloring varies a good deal, as the figures show. The surface 

 is more rudely wrinkled than in the allied species. Morelet's B. 

 virginalis is a white specimen, orange within aperture, the lips roseate. 

 He subsequently united it with hennahi, as did Reeve his rnbescens. 



B. METAMORPHUS n. sp. PI. 1, figs. 6, 7. 



Shell umbilicated, ovate, with produced, concave-conic spire ; rather 

 solid ; whitish or light brown with numerous oblique chestnut 

 streaks. Surface lusterless, with rather coarse but not conspicuous 

 wrinkles of growth, without spiral strite. Spire turrited, attenuated 

 above, with obtuse, smooth apex and comma-shaped axial dimple. 

 Whorls 8, the first rapidly increasing and rather bulbous, the rest 

 narrowly convoluted, moderately convex, the last rather dispropor- 

 tionately large and convex, obtusely angular around the capacious 

 umbilicus, which penetrates to the apex and is dusky inside. 



