244 



DESCRIPTION OF A NEW SPECIES OF ACHATINA FEOM THE 



ZAMBESI. 



By H. B. Pkeston, F.Z.S. 



Read lith January, 1905. 

 ACHATINA MOEEELLI, n.Sp. 



Shell elongate, yellowish white, irregularly painted with hroad 

 reddish - brown flame - markings and blotches, a thin white line 

 appearing below the suture ; transversely sculptured with closely- 

 set ridges, crossed by spiral striae, presenting a cancellated appearance, 

 except on the lower half of the body-whorl, where the sculpture 

 becomes obsolete ; whorls 9-10 ; spire somewhat slender ; suture 

 impressed ; aperture inversely auriform ; peristome simple, a dark 

 band about 2 mm, broad extending into the interior of the shell ; 



columella slightly curved outwards, extending into a slight callosity 

 which reaches the lip above. Alt. 63-5, diam. maj. 25 mm. ; aperture, 

 alt. 26, diam. 10 mm. 



Hal. — Changa Changa, Lusempha Yalley, about 100 miles north of 

 Zumbo on the Zambesi Biver. 



This species appears most nearly to approach A. glaucina (Ancey), 

 Smith, ^ from Zomba on the Shire Biver, but differs from that species 

 in possessing an additional whorl, in its more slender spire, the whorls 

 being less convex, and in the shape of the aperture, the parietal side 

 of the whorl bulging further into the opening ; moreover, the distinct 

 flame-markings readily distinguish it from A. glaucina. 



> Proc. Zool. Soc, 1899, p. 590, pi. xxxiv, figs. 2, 3. 



