ACHATINA,, EAST AFRICA. 71 



A. passargei MARTENS, Sitziingsber. Ges. naturforsch. 

 Freunde zu Berlin, 1900, p. 119. 



Group of A. pfeifferi (see p. 24). 

 67. A. ELLIOTI E. A. Smith. PI. 14, fig. 3. 



Shell elongate, narrow, whitish, covered with a glossy de- 

 ciduous epidermis, buff streaked and maculate with black; 

 striated with delicate growth-lines, delicately fold-like below 

 the suture. Whorls 9, slightly convex, slowly increasing. 

 Spire lengthened, obtuse at the apex. Aperture piriform, 

 blue- whitish, hardly one-third the length of the shell. Colu- 

 mella arcuate, truncate below ; lip very thin, curved. Length 

 38, diam. 13.5, aperture 12x7 mm. (Smith). 



At the Albert Edward Nyanza, 3,000-4,000 ft. (G. Scott 

 Elliot). 



Achatina ellioti SM., Proc. Malac. Soc. London, i, p. 325, 

 fig. 3 on p. 323 (Oct., 1895). 



"This species is very distinct from all known species of 

 Achatina. The narrow, elongate form and the remarkable 

 shining epidermis, blotched and streaked with black and buff, 

 are the most important features." 



The columellar truncation is not sufficiently indicated in 

 my copy of Mr. Smith's figure. In the general shape the 

 shell approaches A. pfeifferi. 



Spurious and Undetermined Species of Achatina, etc. 



Oncaea crenata. Ventricose-ovate, 4 whorls flamed brown 

 and dark; aperture white, 4 inches long. In Guinea 

 (Gistel, Handbuch der Naturgeschichte aller drei Reiche, 

 1850, p. 550). 



Oncaea marginata. Yellowish-white with brown streaks 

 around 4 upper whorls, reddish columella and inner lip, 

 and several gray, transverse striae. Seven whorls, 1% inches 

 long. Habitat unknown (Gistel, 1. c.). 



This is evidently not A. marginata Swains., and it may 

 be a form of Liguus fasciatus. 



Achatina serpentina Beck, Index Moll., p. 76. Nude name. 



Achatina crotallaria Schumacher, Essai d'un Nouv. Syst. 

 Vers Test., p. 202 (1817) = Stylifer sp. 



