163 



Congo Valley : Forest of Waregga (zone of Manyem*), 

 Psevdoglessvla f pkaa PUTZ., Bull, des Seancea, Soc. Boy. 

 Malac. Belgique, 1898, p. IYYYV, f. 22. 



A large, stout species, with the columellar truncation some- 

 what obsolete. 



8. P. HUMIOOLA Dupuis et Putzeys. PL 57, figs. 35, 36. 



Shell elongate-turriculate, perforate, rather solid, translu- 

 cent; yellow or purple-chestnut, covered with a densely and 

 very minutely granulate brown cuticle, the last whorl more 

 glossy and darker, generally pale at the sutare. Spire elon- 

 gate, conic, the apex obtuse. Whorls 7 to 8, a little convex, 

 separated by a rather deep suture, closely rib-striate, the rib- 

 lets more distant on the first two whorls, in the rest regnlarly 

 decreasing, becoming similar to growth-striae on the last whorl, 

 which is minutely but distinctly subangulate. Lip areaate, 

 slightly reflexed. Aperture moderately thickened within, 

 violaceous, acute behind ; columella sub vertical, usually lightly 

 retreating in front, reflexed at the perforation, violaceous, 

 obliquely folded with a white fold below the middle; peris- 

 tome brown with reflexed edge. Length 32, di&m. 15, length 

 of aperture 14, width 8 mm, (D. t P,). 



Congo: Nsendwe (P. Dupuis), 



Pseudoglessula hwnicola DUP. et Purz., Bull, des Seances 

 Soc. Roy. Malac, Belg, 1901, p. xxxv, f. 3, 4 (shell), 5, 6 

 (living animal). 



The characteristic sculpture of the embryonic whorls 

 caused us to place this species in the genus 

 It approaches Bulimus (Cerastus} ptyckaxis Sm^ taut 

 in color, the smaller number of whork *nd the largier 



The foot i* vsry flat, bifid behind (pi. Q % 26), 

 foot is distinctly bordered, the border vertieAlly tmt<e, It 

 is rose-gray, deeper on the tentacles, tfc* Matte 

 shell) vermiculate with white s^vts \isibk tkrottgk, ^y 

 parence. It lays 10 subspbri<^l eggs, LiTO* <A 



ground, generally under prostrate tt*Mraakft (IHi|)^ 



The eggs d- -: v>f th typical sp of 



genus. 



