86 
Annals of the Transvaal Museum 
Posterior spinners with the apical segment about half of the length of the 
penultimate segment. 
Carapace about as long as the metatarsus and three-fourths of the tarsus of j 
the first leg, and as long as the metatarsus and one-fourth of the tarsus of the 
fourth leg. The deep part of the fovea has a short median posterior prolonga- | 
tion, being more or less T-shaped. The ocular tubercle is well marked off from 
the general surface of the carapace. The lateral margins of the carapace are 
fringed with stiff bristles which are strongest and most numerous in the 
posterior half. The greater portion of the carapace is glabrous but there are a 
few setae in the mesial region between the ocular tubercle and the fovea, and 
scattered stiff setae or weak bristles occur generally over the posterior portion 
of the carapace. 
Colour. Carapace, abdomen, chelicerae and basal part of palps and legs as 
far as the patellae are very dark brown : patellae and more distal segments of 
legs and palps pale brown. The abdomen is infuscated inferiorly. 
Measurements. Total length 13-2, length of carapace 5-3, breadth of cara- 
pace 4-1, length of metatarsus I 3*35, of metatarsus IV 4-8. 
Spiroctenus londinensis sp. nov. (text fig. 7 a and b). 
This species is based on an adult male and a series of females collected at 
East London by Dr Rattray and Master Rattray. The adult male was taken 
during August 1916: it resembles the male described by me from Pt. Alfred 
(. Records Albany Mus. 11. p. 467) under the name of Spiroctenus armatus but 
differs therefrom in the characters of the first leg. The female resembles those 
of Bessia fossoria Poc. and Bessia minor mihi, differing from the latter in the 
dentition of the chelicerae and from the former in the smaller number of cusps 
on the labium. 
Legs. Tarsus IV scopulate to the base on each side. Metatarsus I slightly 
bowed in side view, with two spines at the apex inferiorly, one or two long 
stout spines on the anterior surface, also three on the posterior surface, two 
of the latter being situated inferiorly: it is thickly scopulate in the distal third. 
Metatarsus II has two spines at the apex inferiorly, one or two on the anterior 
surface and two inferoposteriorly : it is thickly scopulate in the distal third. 
Metatarsus III has several scopular hairs near the apex inferiorly but IV is 
quite devoid thereof. Tibia 1 with a pair of distal spur-bearing tubercles, the 
more distal tubercle with two stout flattened spurs at the apex, one of which 
is about twice as long as the other: the other tubercle is only slightly elevated, 
and bears at the apex a strong flattened spur: in addition, this segment bears 
a number of spines, viz. six on the lower surface including one at the apex, a 
row of two or three on the anterior surface but none on the posterior surface. 
Tibia II with three spines at the apex inferiorly, three on the lower surface, 
and two or three on the anterior surface but none on the posterior surface: 
III with three spines at the apex inferiorly, also three on the lower surface, 
two on the posterior surface and one or two dorsally but none on the anterior 
surface. Patella I with one or no spines at the apex inferiorly, II likewise, 
III with a single very short spine on the anterior surface, IV without spines. 
Labium and basal portions of the maxillae armed with rather numerous 
minute cusps. Altogether there are thirty-eight such cusps on the labium. 
Chelicerae with about thirteen teeth in the inner row: the outer row is 
composed of minute teeth and extends not quite half-way along the main series. 
Posterior spinners with the apical segment about three-fifths as long as the 
penultimate segment. 
