1899.] FROM BRITISH CENTRAL AFRICA. 589 



it is distinct from all he has described, but comes near his S. pin- 

 guis, being distinguished by its broader whorls and the diflPerent 

 form of the upper part of the spire. 



34. SucciifEA sp. inc. 



Rab. Mount Chiradzulu. 

 One dead specimen. 



35. AcHATiNA IMMACULATA Lamarck, var. 



Achatina immaculata, Lamarck ; Ferussac, Hist. Nat. Moll, 

 pi. cxxvii. 



Eab. Nyasaland. 



None of the specimens hitherto examined are quite like Ferus- 

 sac's figure, in which the aperture is unusually long. The spire 

 also is less conical than in specimens from Cape Delagoa in the 

 British Museum or in the specimens from Nyasaland. The latter 

 have the columella bluish white instead of pinkish, and are of a 

 darker colour, but otherwise are fairly normal. A. layardi Pfeiffer 

 is a variety of this species, rather more profusely spotted than the 

 type. 



36. Achatina panthera (Ferussac). (Plate XXXIV. fig. 1.) 

 Achatina panthera, Ferussac ; Eeeve, Conch. Icon. fig. 12. 

 Hah. Zomba. 



The specimens from this locality are small and rather slender in 

 comparison with the typical form figured by Ferussac (Hist= Nat. 

 Moll. pi. 126). The largest specimen is only 125 millim. in length, 

 although consisting of S? whorls, the number possessed by a large 

 typical example from Mozambique 157 millim. long. A very small 

 specimen, which probably would not have grown larger, has a 

 length of only 93 millim. 



37. Achatina glutinosa Pfeiffer. 



Achatina glutinosa, Pfeiffer, Conch.-Cab. ed. 2, p. 360, pi. xliv. 



fig- 1- 



Achatijiapetersi, Martens, Novitat. Conch, vol. iii. p. 452, pi. xcix. 



figs. 13-15. 



Hah. Zomba. 



I am unable to find any distinguishing characters between this 

 species, said to have been originally obtained in West Africa, 

 and A. petersi from Mozambique ; and I am of opinion that the 

 locality "W. Africa" is one of the many errors of this kind 

 occurring in Mr. Cuming's collection. The species is remarkably 

 constant in coloration, but varies somewhat in ventricosity. The 

 type is 97 millim. in length and 49 in diameter, whereas a more 

 ventricose specimen is the same length, but 6 millim. broader. A 

 smaller but adult example from Zomba (88 milhm. long and 45 

 wide) is rather more solid than the typical form. 



