A Survey of the Scoiyion Fauna of South Africa. 
167 
caudal segment deeper than broad posteriorly ; superior 
crests of caudal segments II and III only feebly denticu- 
lated ; pectinal teeth of male 22-28, of female 18-22. H. troglodytes Ptrs. 
(2) Similar thereto, but with first caudal segment shorter and 
stouter, though not so broad as deep posteriorly, the 
denticulations of the fifth caudal segment inferiorly much 
more strongly developed; only 15 pectinal teeth (female). 
K. troglodytes var. nov. crassicaiidotus. 
(3) First caudal segment broader than deep posteriorly, or at 
any rate as broad as deep ; pectinal teeth of male 19-23, of 
female 15-19. Tail of male about 6-6| times, of female 
about 3f-4f times as long as the carapace. Vesicle 
coarsely granulated ....... H. granulatiis Pure. 
(4) A small species about 60 mm. long ; the setae near the 
lower hind edge of the brachium and hand arranged in a 
single row ; vesicle of female smooth, the caudal segments 
laterally compressed ; tail of male shorter than the trunk 
(26 : 32) ; pectinal teeth, male 13-15, female 9-10 . H. tityrus E. Sim. 
B. Anterior margin of carapace shalloxvAy excavated. 
(5) Similar to troglodytes, but superior crests of second and 
third caudal segments strongly denticulated and the 
terminal teeth subspiniform (male) . H. troglodytes var. nov. deyitatus. 
(6) Similar to troglodytes but tail a trifie stouter ; vesicle of 
female quite without granules laterally and inferiorly, but 
granular in the male ; fifth caudal segment of male hardly 
so long as the hand-back ; superior crests of caudal seg- 
ments without spiniform or even markedly subspiniform 
terminal teeth in either sex ; pectinal teeth, male 21-22, 
female 15-17 H. troglodytes var. nov. matoppoanus-. 
(7) Sides of vesicle quite smooth or with the finest dust-like 
granulation in the female, granular in the male ; tail of 
male about 6 times as long as the carapace, the first seg- 
ment in both sexes deeper than broad ; last tergite broader 
than long in both sexes ; superior crests of caudal seg- 
ments II and III in the male with spiniform terminal 
teeth, which in the female are more or less subspiniform. B. gunningi Pure. 
(8) Tail of male strongly compressed from side to side and 
about 8^ times as long as the carapace, the fifth caudal 
segment being very slender and about equal in length to 
the distance from the base of the hand-back to the lobe 
on the movable finger ; vesicle longer than in gunningi, 
finely granulated laterally in males, more or less distinctly 
so in females ; last tergite more elongated, being often a 
trifle longer than broad in the male . . . . H. gracilis Hew. , 
(9) Adult male with vesicle smooth on the sides, except 
inferiorly ; the granules of the supero-anterior crest of the 
humerus smaller than in gracilis but more numerous (18- 
20) ; fifth caiidal segment longer than the distance from 
