ACHA1INA, EAST AFRICA. "7 



sc'iilptured than the type, and some have the stripes more 

 zigzag than as represented in the cited figure. On the con- 

 trary, other specimens are uniformly greenish-yellow, with- 

 out any striping at all" (pi. 7, figs. 16, 17). 



60. A. FULMINATRIX Martens. PI. 15, figs. 5, 6. 



Similar to A. craveni, but decidedly more slender, the 

 stripes also narrow, numerous and rather vertical on the 

 upper whorls but on the lower most of them take a very 

 oblique direction from above and right (of the observer) 

 downwards and to the left. Cuticle pale yellow, readily 

 deciduous. Length 59, diam. 28.5, length of mouth 31 mm. 



Tanganyika, with A. craveni (Boehm and Reichard) ; near 

 Jipe lake (Dr. Volkens) ; Kauli, Ussagara (Ancey). 



A. fulminatrix MART., Sitzungsber. Ges. nat. Freunde zu 

 Berlin, 1895, p. 146 ; Beschalte Weichthiere D. Ostaf r., 1897, 

 p. 91, pi. 5, f. 32, 38. ANCEY, Journ. de Conch., 1902, p. 

 276, fig. 3. 



As eggs were found in one of the specimens they may be 

 assumed to be nearly full-grown. The eggs are 6 mm. long, 

 nearly 5 wide, and of the usual pale yellow color of Acha- 

 tina eggs. Description and figures are from von Martens. 



61. A. ARCTESPIRATA Bourguignat. PI. 14, fig. 2. 



Shell obese-swollen, ventricose in the middle, rather 

 opaque, somewhat glossy, uniform pale buff, lightly light- 

 ning-streaked with reddish-chestnut fiammules; chalky- white 

 under the cuticle. Spire acuminate-pyramidal, obtuse at the 

 summit, the apex large, obtuse, somewhat mammillate. 

 Whorls 8, a little convex, closely coiled, parted by a rather 

 deep suture; the last whorl large, more than half the total 

 alt., oblong-convex, tapering downwards. Aperture slightly 

 oblique, elongate, rather narrow, very angular above, rela- 

 tively narrow below. Columella short, straight, abruptly 

 truncate. Peristome unexpanded, acute; callous thin, diaph- 

 anous. Length 57, diam. 32, aperture 31x16 mm. (Bgt.). 



Around the southern end of Tanganyika (Bgt.). 



A. arctespirata BGT., Moll, de 1'Af. Equat., p. 83, pi. 5, 

 f. 7 (1889). 



