Annals of the Transvaal Museum 
69 
Hexisopus, that does not appear to be present in the better known 
S. African genera: this is the median tracheal stigma of the fourth 
abdominal sternite, which however is quite small. The same stigma 
occurs in Galeodes, but not in Rhagodes according to H. M. Bernard 1 . 
I have noticed it in female examples of the genus Lipophaga. 
Hexisopus lanatus C. L. Koch [PI. VIII, fig. 41], 1842. 
Purcell in Annals S. Af. Mus. 1. p. 384, figs. 1-7 b, also n. p. 221. 
Recorded by Dr Purcell from localities in Namaqualand, C.P., viz. Gras- 
mond between Steinkopf and Ramond's Drift, and from Vuurdood near 
Ramond’s Drift, also from Bladgrond in Gt Bushmanland. Kraepelin records 
it from Keetmanshoop and Kabus in Gt Namaland. 
Hexisopus crassus Purcell, 1899. Annals S. Af. Mus. 1. p. 387, figs. 8 and 8 a. 
This is founded on a single female example from Worcester. C.P. 
Hexisopus nigrolunatus Kraepelin, 1899. 
Das Tierreich, p. 15 1, fig. 117. 
Founded on an adult male from Damaraland. 
Hexisopus infuscatus Kraepelin, 1899. Das Tievreich, p. 151, fig. 118. 
The type is an adult male from Walfish Bay. 
The species does not seem to be very different from lanatus judging from 
the description. 
Hexisopus reticulatus Purcell, 1901. Annals S. Af. Mus. n. p. 222, fig. 9 a and b. 
The type is an adult male taken near the Orange River between Bysteek 
and the Great Falls at Aughrabies. 
Hexisopus fodiens Simon, 1887. Ann. Soc. Ent. France, 6. 7, p. 374, PI. VI, 
figs. 6 and 7. 
The type is an immature example from the Kalahari, and presumably the 
species is indeterminable. Dr Purcell has remarked on certain peculiarities (9) 
in Simon’s figure of this species, and I may add also that the distal portion of 
the palp is represented with quite unique features — having apparently a lobe 
on the tarsus, and the latter freely articulated with the tibia — which however 
are not referred to in Simon’s description. The figure is probably hopelessly 
inaccurate. 
Key to the species of the Genus Hexisopus . 
1. From the anterior edge of the basal cup, the shaft of the flagellum 
passes forwards, upwards, backwards and finally downwards in a bold 
curve, terminating just behind the base of the lower jaw, not far from 
the basal cup : the shaft is more or less cylindrical and tapers gradually 
to a slender apex. H. lanatus C. L. Koch. 
1 According to Sorensen’s account, the median spiracle would seem to be normally 
present in Solifugae. Hansen recorded it in the genus Rhagodes. 
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