EAST AFRICAN HOMORUS. 145 



oblique, ovate; peristome unexpanded, acute; columella short, 

 curved, abruptly truncate; with no parietal callous. Length 

 20, diain. 3.5, alt. aperture 3.5, width 2.5 mm. (Bgt.). 



East Africa: Wooded districts of Ubembe, on the west 

 coast of Tanganyika. 



Subulina joiiberti BGT., Moll. Afr. Equat. p. 115, pi. 5, 

 f. 4 (1889). 



t 



20. H. SOWERBYANUS (Morelet). PI. 59, figs. 72, 73, 74. 



Shell imperforate, subulate-turrite, thin, smooth, glossy, 

 striatulate, deep chestnut-colored. Spire elongate, the apex 

 obtuse. Whorls 11, plano-convex, joined by an impressed 

 suture, the last whorl scarcely one-fifth the total length. 

 Columella short, slightly arcuate, obliquely truncate, not 

 reaching the base. Aperture small, oblong-semioval, sub- 

 angulate at the base; columellar margin straightened, the 

 other simple and unexpanded. Length 32, diam. 7 mm. 

 (Morel.) . Length 33.5, diam. 7 mm. ; whorls 11% (Specimen) . 



Near Tanganyika (Sowerby.). 



Stenogyra soiverbyana MORELET, Journ. de Conch. 1890, p. 

 67, pi. 1, f. 3. Homorus s., KOBELT, Conchyl. Cab. p. 114. 

 Subulina (Subidona) s., MARTENS, Beschalte Weichthiere 

 p. 120. 



The original figures, one of which is copied in my fig. 74, 

 do not represent the type specimen, but a much smaller one. 

 Figs. 72, 73 are from a specimen similar to the type. The 

 color is yellowish-brown with scattered narrow dark oblique 

 streaks. The whorls are moderately convex, finely, irregularly 

 striate, and under the lens are seen to be decussated on the 

 last 5 or 6 whorls. The last whorl is not angular, but there is 

 an obscure line at the periphery giving it an angular appear- 

 ance. Below this line it is extensively denuded in front. 

 The cylindric embryonic shell consists of 3% whorls, the 

 first one smooth, then begin short, acute subsutural folds, 

 rather widely spaced on the second and third whorls, but be- 

 coming more crowded on the last part of the embryonic shell, 

 the termination of which is indicated by an oblique brown 

 line (see pi. 59, fig. 73) . 



