PSEUDOTROCIIUS. 239 



coloring of P. saulcydi or normalis, and it is a smoother, 

 thinner, less obese shell than P. kobelii; it is further distin- 

 guished by the pale interior. 



22. P. RUBICUNDULUS (Gould). 



Shell oblong-conic, thin, with a roseate blush; whorls 7, 

 a little convex, the last obsoletely carinate ; suture marginate, 

 whitish, elegantly crenulate ; aperture ovate, columella thin, 

 lip subreflexed, somewhat thickened within. Length 1.5, 

 width .7 inch. Allied to B. boholensis Brod., and is colored 

 like some varieties of B. concinnus Brod. 77 (Old.). 



West Africa: Cape Palmas. 



Bulimies rubicundulus GLD., Proc. Boston Soc. N. H., i, 

 p. 158 (Dec., 1843) ; Otia, p. 192, 210 (stated to be a var. of 

 interstinctus). Perideris rubicundula SHUTTLW., Notitize, i, 

 p. 83. 



Gould subsequently referred this form to B. inter strict us 

 as a variety ; and Pf eiffer also placed it in the synonymy of 

 that species. The name precedes that of interstinctus on the 

 same page; but their specific identity needs confirmation. 



23. P. INTERSTINCTUS (Gould). PL 12, figs. 30, 31. 



Shell ovate, the apex mamillate, imperforate, pale flesh 

 color, variegated with streaks and letter-like purple and pale 

 markings here and there. Whorls 7, ventricose, the last 

 large, half the length of the spire ; suture margined, whitish, 

 very noticeably crenulate. Aperture small, subquadrate; 

 columella roseate, evolute, posteriorly sinuous; lip acute, 

 thickened with a rosy callous within. Length one and three- 

 fourths, width nine-tenths [=44x22.5 mm.] (Old.). 



West Africa: Liberia at Cape Palmas (Drs. Savage and 

 Perkins), and Hilltown (Buttikofer) ; Bourbouri, Grand 

 Bassam (Vignon). 



Bulimus interstinctus GLD., Proc. Boston Soc. N. H., i, p. 

 158 (Dec., 1843) ; Otia, pp. 192, 210. REEVE, Conch. Icon., 

 v, pi. 55, f . 367 ; pi. 89, f . 3675 ? PETIT, Journ. de Conchyl., 

 1851, p. 368, pi. 10, f. 8 (vsLT.).-Achatina i., Gld., PFR., 

 Monogr., iii, p. 479 ; Conch. Cab., p. 317, pi. 25 ? f . 27. Via- 



