104 
Transactions of the Royal Society of South Africa. 
3. B. AHENACEUS Purcell, Ann. S. Af. Mus. li, p. 137, 1901. 
Distribution : The type from Little Bushmanland ; Prof. Kraepelin (12) 
records it from Gibeon in Grreat Namaland. 
Key to the Species of Buthus recorded from South Africa. 
Sternites smooth at least over their mesial areas, the fourth sternite 
without median keels and with only indication of a pair of smooth lateral 
keels ; pectinal teeth 25-27 ..... 5. trillneatus Ptrs. 
Sternites smooth, but the fourth, like the fifth, with 4 subgranular keels ; 
pectinal teeth 14 ; digit with 12 granular rows . . B. conspersus Thor. 
All the sternites, including the first, densely and finely granular over the 
whole surface, the fourth with 4 finely granular keels, the medians being 
very weak and short : pectinal teeth 17-18 ; digit with 10-11 granular rows. 
B. arenaceus Pure. 
Gen. PAEABIJTHUS Pocock. 
1. P. PLANicAUDA Pocock (PI. XXI, fig. 31), Ann. Mag. Nat. Hist. 6, 3, p. 344, 
1889, female only. 
— P. capensis Purcell (not Hemp, and Ehren.), Ann. S. Af. Mus. ii, 
p. 143, 1901, male and female. 
Distribution : Southern districts of Cape Province, from Tulbagh, 
Worcester, and Caledon in the West to Albany and Cathcart districts in 
the East. See Purcell (17), Pocock (8), and Hewitt (19). 
la. P. PLANicAUDA var. FRENCHi Purcell (PI. XXI, fig. 32), Ann. S. Af. 
Mus. ii, p. 148, 1901. 
= P. capensis var. frenchi Purcell, loc. cit. 
Distribution : Graaff Reinet, Burghersdorp, Klerksdale near Middel- 
burg (B. Marais). 
2. P. CALVus Purcell, Ann. S. Af. Mus. i, p. 28, pi. iv, 1898, male ; vol. ii, 
p. 148, 1901, female. 
Distribution : Calvinia and Clanwilliam Districts ; also recorded from 
Kamaggas by Kraepelin (11). 
3. P. BREviMANus Thorell, Actes Soc. Ital. Sci. Nat. xix, p. 110, 1877. 
Distribution : Great Bushmanland, German S.W. Africa, and north- 
wards to the Congo ; Pocock's species cristatus (Ann. Mag. Nat. Hist. 7, 7, 
p. 284) from the last-mentioned region being apparently a synonym of 
hrevimanus. See Purcell (17), and Kraepelin (11) and (12), also Pocock 
(8). We have it from Kakamas (Miss H. C. Olivier). 
4. P. LAEviFRONs Simou, Ann. Soc. Ent. France, 6, 7, p. 379, 1887 
(female?). W. P. Purcell, Ann. S. Af. Mus. ii, p. 151, 1901 (male 
and female). 
