110 WEST AFRICAN GLESSULA. 



Length 15 to 20, diam. 8 to 9 mm. Animal dirty buff, 25 

 mm. long. (Rang). 



West Africa: Malaguetta (Liberian) coast, under bushes 

 and in crevices of the rocks (Rang). 



Helix malaguettana BANG, Annales des Sciences Naturelles 

 xxiv, 1831, p. 39, pi. 3, >f. 4. Achatina m., DESK, in Lam., 

 An. s. Vert, viii, p. 307. PFR., Monogr. ii, 257. Subulina 

 malaguetana BECK, Index, p. 77. 



This shell, according to Rang, is long, conic, thin, almost 

 diaphanous, very finely and regularly striate; the very thin 

 cuticle covering it is of a dirty yellowish brown, resembling 

 that of Subulina striatella. The summit is obtuse, and its 

 whorls, 6 in number, are quite rounded. The aperture is 

 oval, little oblique. The columella is very concave and trun- 

 cate in front; the right margin is straight and thin, fragile 

 and acute. Deshayes gives the dimensions 22 x 8 mm. The 

 systematic position is unknown, and it may prove to be a 

 Pseudoglessula. The spire is more slender above than in 

 G. paritura. 



92. G. SERICINA (Jonas). PI. 14, figs. 13, 14. 



Shell ovate-turrite, rather thin, longitudinally closely pli- 

 cate, pellucid, glossy, straw-colored. Spire turrited, the apex 

 very obtuse. Whorls 6 to 6%, convex, the last about three- 

 sevenths the total length, obsoletely angulated in the middle, 

 smooth below the angle. Columella very arcuate, highly and 

 widely truncate, the aperture suboval. Length 17, diam. 7 

 mm., aperture 7y 2 mm. long, 4 wide in the middle. (Pfr.) 



West Africa: Guinea (Jonas). 



Glandina sericina JONAS, in Phil., Abbild. I, p. 134, pi. 1, 

 f. 11 (July, 1844). Achatina s., PFR., Monogr. ii, 292; iii, 

 494; iv, 606; Conchyl. Cab. p. 308, pi. 24, f. 12, 13. Homorus 

 (Pseudoglessula) s., KOBELT, C. Cab. p. 104. 



This snail has a beautiful appearance from its very regular, 

 pretty and strong striation, and its silky luster. (Jonas) . 



