46 
Annals of the Transvaal Museum 
enlargement high, not much elongated, the anterior upper margin being 
rather lightly curved, but not forming an angle with the posterior ridge which 
is strongly curved. 5 . serraticornis Purcell. 
11. Similar thereto, but flagellum reaching as far as the ocular tubercle. 
A dense group of long strong spines on the upper and outer surfaces of the 
chelicera. S. serraticornis var. umtalica Hewitt. 
12. Flagellum reaching just beyond the middle of the mandible, spirally 
twisted, and carrying a spiral serrated crest over the distal two-thirds of its 
length except near to the tip. Basal enlargement short, with curved upper 
margin. On the upper surface of the chelicerae there are a few long slender 
spines and stiff bristles but practical^ no stout spines. 
5 . strepsiceros Kraepelin. 
13. Somewhat like serraticornis, but the denticulate crest on the flagellum 
feebly developed, being restricted to the inferior edge at the distal sinus. The 
flagellum is twisted as well as curved at the well-marked distal sinus : viewed 
from above, the portion beyond the sinus is quite straight, or nearly so, and 
parallel with the main portion of the shaft but distinctly external thereto: 
at the distal end of the sinus, the shaft becomes rather suddenly reduced in 
thickness, and thence to the apex is gradually drawn out to a fine point. Basal 
enlargement somewhat elongated, the upper margin being straight or nearly 
so for a considerable distance: shaft rather broad at the anterior bend, but 
otherwise not flattened. On the lateral and upper parts of the chelicerae there 
is a very strong development of straight stout spines. 
5 . spiralicornis Purcell. 
D. Recurrent portion of flagellum very short, not or scarcely 
extending back beyond the basal enlargement, and not strongly 
flattened over the greater portion of its length : procurrent portion 
very short, the anterior bend situated over the second tooth, or 
the interval between the first and second: on the inner dorsal edge 
of the upper jaw, just in front of the anterior bend of the flagellum, 
there is a small or minute tooth. 
14. Flagellum an upstanding process, shaped somewhat like the horn of a 
rhinoceros, broad and strongly flattened from front to back at the anterior 
bend, tapering gradually towards the apex which is truncate, the central core 
projecting out therefrom a little: tip of flagellum situated just above the 
middle point of the basal enlargement. 5 . schonlandi Pocock. 
15. Flagellum somewhat similar, but at the apex is an enlarged globose 
swelling, the cuticle of which is minutely pubescent, thin, and pale, thus 
markedly contrasting with the shaft : the shaft is continued on the inner side 
of the swelling into a sharp-pointed flanking spine : the shaft is short and stout, 
being very broad at the anterior bend where it is flattened from front to back. 
Long spines and stout bristles are fairly well developed on the upper surface 
of chelicerae. 5 . globicornis Kraep. 
E. Flagellum not, or only slightly, produced anteriorly, the 
anterior bend overlying the second tooth ; recurrent portion short, 
strongly flattened over the greater portion of its length: upper jaw 
on its inner dorsal edge, near to the anterior bend of the flagellum, 
furnished with a fairly conspicuous tooth, or two small teeth, against 
which the lower fang closes. 
