274 LIMICOLARIA, N.-E. AFRICA. 



few straw-yellow streaks on the last whorl, covered with a 

 very thin pale corneous epidermis. Spire long, slender, the 

 apex obtuse; whorls 8, slightly convex, the last hardly ex- 

 ceeding one-third the total length, tapering at the base; 

 suture impressed, slightly crenulate; columella subarcuate. 

 Aperture oblong-oval, the peristome unexpanded, the colu- 

 mellar margin narrowly reflexed. Length 62, diam. 20, aper- 

 ture 23x10 mm. (Shuttl.). 



N. E. Africa: Kordofan (Kotschy, in Mousson coll.). 



Bulimus candidissimus PARREYSS on label. L. candidis- 

 sima SHUTTL., Notitise, p. 49, pi. 6, f. 7, 8 (1856). KOBELT, 

 'Conchyl. Cab., p. 53, pi. 17, f. 3. JICKELI, 1. c., p. 160, 

 pi. 6, f. 8. 



A rather long and slender form of the Upper Nile region, 

 probably related to L. flammata Caill. 



40. L. DHERICOURTIANA Bourguignat. PL 17, fig. 84. 



Shell narrowly perforate (almost completely covered), 

 swollen, little lengthened, rather solid, somewhat opaque, 

 glossy, uniform ochraceous; strongly costulate, the riblets 

 regular, produced, wide on the last whorl, and elegantly 

 encircled with very minute and numerous spiral lines. Spire 

 oblong, obtusely, rather shortly tapering, obtuse at the sum- 

 mit, the apex paler, smooth. Whorls 7, a little convex, regu- 

 larly increasing, parted by a suture moderately impressed, 

 subcrenulate-marginate on the last whorl. Last whorl ex- 

 actly half the total length. Aperture a little oblique, semi- 

 ovate, somewhat channelled at the base of the columella; 

 peristome acute. Columella straight, slightly twisted, widely 

 dilated and almost closing the perforation, not vaulted in the 

 middle but subarcuate, somewhat channelled above, acutely 

 attenuate below. Length 50, diam. 27, apert. 25 x 14 mm. 



N. E. Africa: neighborhood of Abdul Rassul, near An- 

 boker (Soleillet). 



L. d'Hericourtiana BGT., Moll. terr. et fluv. rec. par M. 

 Paul Soleillet dans son Voyage au Choa (Ethiopie merid- 

 ionale), Sept., 1885, p. 15, f. 20 of plate. L. hericourtiana 

 Bgt, KOB., C. Cab., p. 80, pi. 29, f. 2 (copy). 



