24 
Annals of the Transvaal Museum 
B. Fourth leg without tarsal claws. All the legs are short, the 
posterior three pairs very robust, their more distal segments strongly 
spined. In the fourth leg the combined length of coxa and of the three 
trochanter segments is about equal to that of the rest of the limb, the 
femur of this leg being shorter than the trochantin. Surfaces of body 
and appendages clothed with long silky hairs. Flagellum of male rota- 
tably attached at the small cup-like basal enlargement to the inner 
surface of the upper jaw. S. /. Hexisopodinae. 
Subfamily HEXISOPODINAE. 
11. The three distal segments of leg IV are terete, or only slightly com- 
pressed, and without angular edges. Pedipalps not spined. Stridulatory area 
of chelicerae with parallel ribs. In females, the mesial surface of the chelicera 
carries feathered bristles and stout simple bristles, but the males are devoid 
of feather bristles and have no long simple bristles, though dorsally near 
the base of the -fang there occurs a dense patch of short spiniform setae. The 
flagellum of the male is hidden between the mandibles, being attached to the 
jaw far back, but quite near to the cutting edge and not far from the angle of 
the jaws. H exisopus Karsch. 
12. The three distal segments of the fourth leg are broad and more or 
less strongly flattened with angular edges, and some of the distal segments 
of the third and fourth legs have their posterior surfaces hairless and densely 
covered with short granuliform or dentiform spinules. Distal segments of 
pedipalps strongly spined. Inner surface of chelicerae with a large smooth 
area marked with fine furrows, which are sometimes more or less reticulately 
arranged, and sometimes more or less in longitudinal lines. (Females of this 
genus unknown.) Chelypus Purcell. 
Genus Solpuga Licht. 
Solpuga lethalis C. L. Koch, 1842 [Text fig. 2 a], Kraepelin, in Das 
TierreicK, p. 56, fig. 14. Purcell, in Annals 5 . Af. Mus. 1, p. 405, figs. 19 
and 19 a. 
The form described by Dr Purcell, characterised by a well-marked distal 
sinus on the shaft of the flagellum, was recorded from the following divisions 
in Cape Colony: Malmesbury, Robertson, Swellendam, Paarl, Worcester, 
Clanwilliam and Namaqualand. In this form, now termed 5 . lethalis typicus, 
the shaft is devoid of minute serrations except for an oblique band on the 
anterior half of the sinus. 
Kraepelin records the species from various localities in S.W. Africa, viz. 
Ababis, Okasise, Okahandja, Windhuk, Rehoboth and Spitzkoppe near Keet- 
manshoop. It is not known from the eastern or central districts of the Cape 
Province. 
In the male, the spines on the upper surfaces of the chelicerae are not very 
stout. 
Solpuga lethalis C. Koch var. nov. rectus [PI. VII, fig. 37 and Text fig. 2 b\. 
This name is applied to a form which is chiefly distinguished from typical 
specimens, as described by Kraepelin and Purcell, in the complete absence of a 
distal sinus on the recurrent portion of the flagellum. The shaft is long, 
