118 PSEUDOPEAS. 



This species differs from the others by its flattened whorls, 

 terraced at the sutures. 



5. P. PULCHELLUM Putzeys. PI. 25, fig. 13. 



" Shell imperf orate, ovate-turrite, thin, yellow, diaphanous, 

 with obtuse submamillafte apex. Whorls 5%, convex, the first 

 two smooth, the rest ornamented with raised, sublamellose, 

 slightly oblique ribs, and parted by a deep suture, the last 

 whorl a little swollen. Aperture oval; columella straight, 

 reflexed, nearly reaching the base, and forming an angle with 

 the lip anteriorly; margins joined posteriorly by a very thin 

 callus. Length 3.5, diam. 1.6, length of aperture 1.33 mm." 



Congo Valley: Nseudwe, Manyema. 



Pseudopeas pulchellum PUTZ., Ann. Soc. E/oy. Malac. 

 Belgique xxxiv, 1899, Bull, des seances p. lix, fig. 11. 



Although Dr. Putzeys states that the first two whorls are 

 smooth in this species and the next, I do not doubt that when 

 seen under a high power they will be found to be 

 spirally engraved. 



6. P. SCALARIFORME Putzeys. PI. 25, figs. 9, 10. 



" Shell imperforate, turriculate, elongate, thin, yellowish, 

 the apex obtuse. Whorls 61/2, convex, quite regularly increas- 

 ing and joined by a deep suture, the first two whorls smooth, 

 the rest ornamented with many longitudinal lamellar riblets. 

 Aperture oval, the lip acute; columella twisted, subplicate, 

 columellar margin reflexed, continuous with the anterior lip- 

 margin. Length 4.5, diam. 1.7, length of aperture 1.5 mm." 

 (Putz.). 



Congo Valley: Nseudwe, Manyema. 



Pseudopeas scalariforme PUTZ., t. c., p. lix, f. 12, 13. 



7. P. ISSELI (Jickeli). PI. 25, fig. 11, 12. 



Shell oblong-ovate, thin, rather glossy, whitish, glassy- 

 fliaphanous, under the lens seen to be strongly ribbed length- 

 wise, the upper whorls ornamented with spiral strise. Spire 

 long-iconic, the apex obtuse. Whorls scarcely 5, inflated, 



