BULIMULUS-BOSTRYX-LISSOACME. 165 



B. SCUTULATUS Broderip. PL 47, figs. 71, 72, 73. 



Shell umbilicate, ovate-turrited, solid ; opaque white, with several 

 (p to 7) spiral chestnut bands formed of closely arranged, square or 

 narrow spots ; the earlier whorls yellowish, brown or whitish. Sur- 

 face with irregular growth-wrinkles. Spire elongated, apex mamillar, 

 smooth. Whorls 7^-8, convex, especially below the sutures. 



Aperture oblong-ovate, less than half the total length, showing the 

 bands within. Outer lip sharp, columellar lip straightened, broadly 

 dilated above. Alt. 24, diam. 12 ; alt. of aperture 10 mill. 



Islay, Peru (Cuming). 



Bulinus scutulatus BROD., P. Z. S., 1832, p. 106. Bulimus scutu- 

 latus ORB., Voy., p. 282. DESH. in An. s. Vert, viii, p. 265. PFR., 

 Monogr., ii, p. 213 ; Conchyl. Cab., p. 223, pi. 62, f. 1, 2. HUPE in 

 Gay, Hist. Chile, viii, p. 112, pi. 2, f. 5. REEVE, Conch. Icon., 

 f. 110. 



The solidity of this species distinguishes it from B. modestus group. 

 There is much variation in coloring, some specimens being very pale. 



I refer to this species a very slender shell, alt. 23?, diam. 10 mill., 

 which has the same coloration. 



B. LIMONOICUS Orbigny. PI. 50, figs. 42, 43. 



Shell elongated, pyramidal, subumbilicated, thin, substriate ; trans- 

 lucid, whitish-rufescent, varied with narrow brown longitudinal 

 lines. Spire subinflated, the apex acute. Whorls 6, rounded, short. 

 Aperture oval, angulose ; lip thin, acute. Alt. 16, diam. 7 mill. 

 (Orb.-). 



Southeastern part of Prov. Chiquitos, Bolivia, at the ruins of the 

 ancient mission of San Juan (Orb.). 



Helix limonoica ORB., Mag. de Zool., 1835, p. 13. Bulimus lim- 

 onoicus ORB., Voy., p. 284, pi. 33, f. 15-17. PFR., Monogr., ii, p. 

 111. ? B. limonoicus REEVE, Conch. Icon., pi. 56, f. 371. ?jB. 

 limonoicu* PFR., Mouogr., iii, p. 425. B. cinereus REEVE, Conch. 

 Icon., pi. 56, f. 372. 



This species has some resemblance to B. scutulatus ; but it is dis- 

 tinguished by the visibly swollen spire, more elongated, by the nar- 

 rower and angular aperture, smoother texture, and finally the com- 

 pletely different tint. However, it should be placed near B. scutula- 



tv*. (Orb.}. 



