44 ACHATINA, EAST AFRICA. 



p. 482 (1853), as a variety of A. zebra, was based upon 

 A. eburnoide of Sganzin, in his Catalogue des Coquilles trou- 

 vees aux des iles de France, de Bourbon et de Madagascar, 

 p. 17, in Memoires de la Societe du Museum d'Histoire 

 Naturelle de Strasbourg, III (1840-1842). Sganzin omitted 

 the Latin name of this species, which was supplied by Pfeif- 

 fer. The description follows: I have given this shell the 

 name of the eburnoide because its whorls are projecting and 

 cut into like the Eburnas, instead of being rounded as in 

 the preceding Agate shell ["A. zebra"]. For the rest, it 

 has the greatest resemblance to the zebra Agathine, and seems 

 to be only a sport of nature. It has also a little more elon- 

 gated shape. I found two at Sainte-Marie. This shell is 

 rare and lives with the preceding ["A. zebra" of Mada- 

 gascar] . 



In Mauritius, where it is said to have been introduced 

 about 1847, A. panthera is reported to have almost supplanted 

 A. fulica (Dupont, J. de C., 1878, p. 171). 



In the Seychelles the typical form thick-shelled with ros- 

 eate columella has been found at Mahe in the cultivated 

 district only. 



The specimens from Zomba (pi. 38, fig. 30), near Lake 

 Nyasa, are "small and rather slender in comparison with the 

 typical form figured by Ferussac. The largest specimen is 

 only 125 mm. in length, although consisting of 8^/2 whorls, 

 the number possessed by a large typical example from Mozam- 

 bique 157 mm. long. A very small specimen, which prob- 

 ably would not have grown larger, has a length of only 93 

 mm." (Smith}. 



40a. Var. nasimoyensis Bgt. 



This form, which I consider a variety, is relatively very 

 small (length 90, diam. 47, aperture 50x26 mm.), differing 

 from the type only in the reduced proportions of every part. 

 The last whorl, however, seems to be more convex and the 

 spire is a little more acute (Bgt.}. 



It occurred at Nasimoya, Zanzibar, with typical panthera, 

 123 mm. long. 



