PSEUDOTROCHUS. 239 



coloring of P. saulcydi or -nor mails, and it is a smoother, 

 thinner, less obese shell than P. kobelti; 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 creuulate ; aperture ovate, coluniella thin, 

 lip subreflexed, somewhat thickened within. Length 1.5, 

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

 like some varieties of B. concinnus Brod." (Old.}. 



West Africa : Cape Palrnas. 



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

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

 interstinctus) . Peridcris rubicundula SHUTTLW., Notitite, i, 

 p. 83. 



Gould subsequently referred this form to B. inter strictus 

 as a variety; and Pfeiffer 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 . 3676 ? PETIT, Journ. de Conchyl., 

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

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



