154 HOMORUS, WEST AFRICA. 



marked with, numerous unequal brown streaks. Whorls 9, 

 equally increasing, very slightly convex, the upper three uni- 

 colored whitish, more strongly striate, the first small, oblique, 

 second globose, more distinctly costulate, the last whorl 

 rounded basally. Aperture rhombic-oblong, acutely angu- 

 lar above, the outer lip thin, slightly arcuate ; the basal margin 

 rounded; columellar margin thickened, a thin callous cover- 

 ing the columellar and parietal margins. Length 16, diam. 

 6.5, length of aperture 5, width 4 mm. (Marts.) 



West Africa: Buea, Kamerun, in old forest, especially on 

 Marattia fraxinea (Dr. Preuss). 



Achatina (Homorus) pyramidella MARTS., Sitzungsber. 

 Gesellschaft naturforsch. Freunde zu Berlin, 15 nov., 1892, 

 p. 181. Cf. Beschalte Weichthiere D. O.-Af., p. 116. 

 Homorus (Pseudoglessula) p., KOBELT, Conchyl. Cab. p. 114. 



From the description of the apex, translated above, I would 

 be disposed to place this species in Pseudoglessula, following 

 Kobelt; but the pale and streaked coloration is unlike that 

 group. Moreover, von Martens has emphatically stated that 

 it is not a Pseudoglessula. 



34. H. LUGUBRIS (Morelet). PI. 60, figs. 76, 77. 



Shell turrited, solid, closely and irregularly granose-striate, 

 silky, chestnut-blackish obscurely striped with darker streaks. 

 Spire elongate, the apex rather obtuse. Suture impressed, 

 crenulate. Whorls 14, subplanulate, the first smooth, sum- 

 mit pale corneous, the rest decussate with hair-like striae, 

 larger at the sutures, and inconspicuous transverse impress- 

 ions; the last whorl angulate at base, less than one-fifth the 

 total length. Columella short, curved, abruptly truncate. 

 Aperture small, oblong, violaceous within; peristome simple, 

 unexpanded, the columellar margin denuded of cuticle, buff. 

 Length 61, diam. 10, length of aperture 11 mm. (Morelet.) 



West Africa : Landana, above the mouth of the Congo. 



Stenogyra lugubris MOREL., Journ. de Conchyl. 1883, p. 

 399, pi. 10, f . 4. 



This species is remarkable for the large number of whorls, 

 fourteen, and the solid texture. It is covered with a fine, 



