214 PSEUDACHATINA. 



rather deep sinus with the basal margin. Length 99.5, diam. 

 39.7 mm.; apert. 38.9 mm. long, 25 wide, 36 mm. high 

 (Eolle) . 



West Africa: Old Calabar, Kamerim (Berlin Mus.). 



Pseudachatina perelongata ROLLE, Nachrbl. d d. malak. 

 Ges., xxxiv, p. 211 (Dec., 1902). 



This seems from the description to belong to the downesii 

 group. Herr Eolle unfortunately did not mention the color 

 of the shell. Compare the following species. 



10. P. DAILLYANA Pilsbry, n. sp. PI. 1, figs. 7, 8. 



Shell moderately solid, the spire long, with nearly straight 

 lateral outlines. Surface smoothish, with some low, incon- 

 spicuous, oblique waves and ripples only. Pure white under 

 a fibrous, dirty yellow cuticle, which in large part persists 

 on the last two whorls. First 4% whorls convex with simple 

 suture, the following whorls less convex, impressed below the 

 suture, and bordered with a closely plicate band, limited by 

 an impressed line below, this border becoming obsolete on the 

 last whorl, which is more or less angular at the periphery, 

 the angle sometimes weakly tuberculate. Aperture small, 

 oblique, pure white or faintly pink-tinted throughout. Outer 

 lip well expanded and reflexed. Parietal callous rather thick, 

 white. 



Length 87, diam. 35, oblique alt. apert. 35.6 mm. ; whorls 

 8%. 



Length 84.5, diam. 33.5, oblique alt. apert. 33.5 mm. ; whorls 

 8%. 



West Africa. 



This form seems nearest P. gabonensis, but differs by its 

 long, narrow spire, comparative smoothness and more devel- 

 oped lip. It is named for Adolf d'Ailly, author of one of 

 the best papers upon the West African snail fauna. 



11. P. GABONENSIS Shuttleworth. PL 6, figs. 26-29. 



" Shell long ovate-turrite, rather solid, coarsely and re- 

 motely plicate, slightly glossy; pale flesh-color or roseate, 

 painted with wide purplish-rose streaks, the base pale chest- 



