190 Annals of the South African Musewm. 
1897 Limicolaria (Livinhacia) nilotica, Pfr, von Mts., D.-O.-Afr. 
pp. 94-98. D.F. Varr. and Synonymy. 
1898 Livinhacia arnoldi, Stur., S.A. Moll. p. 59. pl. 2, f. 41. DP’ 
1904 Burtoa arnoldi, Stur., Pilsb., Man. of Conch. xvi. p. 307. pl. 26, 
fa) DF 
nilotica, Pfr., Pilsb., ibid. p. 300. pl. 26, f. 15, 16. pl. 27, 
f. 5, 6. pl. 29, f. 7, 8. pl. 30, £ 18. pl 35,4. 22,23... Dor, 
1906 ,,  nilotica, Pfr., Reynell, Proc. Mal. Soc. vii. p. 197. pl. 17, 
f,1-3. A.R. 
1907 Burtoa nilotica, Pfr. (=arnoldi, Stur.), Melv. & Standen, Man- 
chester Memoirs, li, 4. p. 11. N. 
Type of nilotica in British Museum; arnold: in Naturh. Hofmus. 
” ”? 
Vienna. 
Hab. Marrsinimanp. Near the Amanze Inyama River (arnoldt, 
Penther). 
RuopesiA. Salisbury (Oakley). Victoria Falls (Soper). Insiza 
(French). 
A most variable form, originally described from The Source of the 
White Nile (Petherick), and occurring in many parts of Hastern 
Africa. Crosse (1889) places Bul. giraudi, Bgt., in the synonymy, 
to which von Martens (1897) adds jowberti, sebasmia, bridouxiana, 
and lavigeriana, Bgt. The last-named author also identifies pethericke, 
Bet., with var. schweinfurthi, von Mts., and describes varr. emint, 
crassa, obliqua, and oblonga. Pilsbry (1904) brings in as further 
varieties reymondi, Bgt., and grandidiert, Pilsb. (= Limicolaria 
bourguignati, Grandidier). 
Genus ACHATINA, Lamarck, 1799. 
(Mém. Soc. Hist. Nat. Paris, p. 75.) 
(=Oncea, Gistel, 1850; Urceus (Klein), Jousseaume, 1884, and 
Parachatina, Serpea, and Pintoa, Bourguignat, 1889.) 
Type of Genus, A. achatina (Lin.). 
Pilsbry (1904) places most of the South African forms previously 
attributed to this Genus in Cochlitoma, Fér. (Tabl. Syst. Moll. pt. 3, 
1821, pp. 28, 52 (or 24, 48), Type A. zebra, Chem.), and Kobelt (1909) 
follows his example. Apparently there are no anatomical grounds 
for the subdivision, which rests on a very fragile conchological basis. 
As many of the leading British and South African authorities are 
averse to the change, I prefer to retain the older classification. 
