166 PSEUDOGLESSULA. 



callous. Length 42, diam. 15.5, mm. aperture 14 mm. long, 

 8.5 wide (d'Ailly). 



West Africa: Bonge, Bibundi, Itoke, Cameroons (Sjostedt). 



P. sjostedti d'AiLLY, Bihang etc., p. 104, pi. 5, f. 6, 7. 



Though excessively close to P. keteracra Bttg., this species 

 presents peculiarities which do not permit us to consider them 

 identical. The last whorl, which does not descend to the 

 aperture, always has an obtuse, thread-like angle, bordered 

 below by a noticeable depression, crossed by the fold-like 

 striae, which continue to the base. The spire is more con- 

 cave than in other species of the group, the whorls less con- 

 vex, etc. 



It lives like the other species among dead leaves, most 

 specimens having a thin but solid and adherent coat of earth 

 on the upper surface. 



East African Species. 

 13. P. KIRKII (Craven). PL 61, figs. 90, 91. 



" Shell turriform, obliquely lirate, of a yellowish-brown 

 color, sometimes marked with chocolate-colored spiral bands; 

 epidermis glossy; apex very obtuse; spire rather elongated; 

 whorls 7!/2, convex, the last occupying rather more than one- 

 third of the entire length of the shell; labrum thin, simple; 

 columella obliquely curved; the generic fold small, but well 

 denned ; suture deep. Length 26 mm., breadth of last whorl 

 12, height of aperture 10, breadth of aperture 6 mm." 

 (Craven). 



East Africa : Magila, with Helix usambarica in woods near 

 a waterfall (Craven). 



Achatina kirkii CRAVEN, Proc. Zool. Soc. Lond. 1880, p. 

 218, pi. 22, f. 9. Pseudoglessula kirki MARTS., Beschalte 

 Weichthiere p. 115. 



Conradt found specimens also in Usambara, with four red- 

 brown spiral bands, and others without bands. Most of 

 them show an obtuse keel along the periphery in continuation 

 of the suture, but more or less obsolete towards the lip. Be- 

 low the keel the vertical striae are weaker though still present; 



