On the South African ‘* Theraphoside.”’ 341 
are directed downwards and forwards. Sternal sagilla marginal. 
Tibia of first leg in g furnished with a strong spur bearing one 
of the two apical spines as in Harpactira, but the spine longer 
than the spur. 
Type.—H. treleavent, n. sp. 
On the outer surface of the chelicerz a horizontal row of 2-4 long 
red sete, resembling the upper series of stridulating bristles of 
Harpactira, is frequently found. They are situated more forward 
in the anterior part of the middle third at a little distance from the 
red inferior fringe, just above where the hairs of the latter are most 
abbreviated. These setze may be absent, or hidden amongst other 
but darker hairs, or they may stand out isolated and very conspicuous. 
The outer surface in a very young Harpuctira, before the scopula 
and the lower group of stridulating notes have been formed, is very 
similar to that of an adult’ Harpactirella, having a similar posterior 
patch of fine hairs, but it may be distinguished at once by the position 
of the upper series of stridulating bristles. In the young Harpactira 
this series is always well developed, with the posterior bristles 
situated some distance behind the middle of the chelicera, whereas 
in Harpactirella the posterior bristle, when distinguishable, is 
situated in the middle or, more generally, some distance anterior 
to the middle. 
The absence of scopule from the sides of the chelicerz is apparently 
the only character which distinguishes this genus from Harpactura, 
with which it would fall in Simon’s table of the Selenocosmiee. 
The genus includes the four small species described below from 
the south-western parts of Cape Colony, and also several other 
forms from Cape Colony, Natal, and the Transvaal, of which, 
however, we possess at present only female examples. The largest 
specimen (from Dunbrody, Uitenhage Div.) measures 35 mm. in 
length, but this length appears to be quite exceptional in the 
genus. 
1. HARPACTIRELLA TRELEAVENI, 0. sp. 
Locality.—One $ (type, No. 4496) found by Mr. F. Treleaven on 
the Cape Town side of Table Mountain; also 1 ¢ and a large number 
of @ and juv. from various parts of the Cape Peninsula, mostly 
under stones (Signal Hill, Cape Town, slopes of Devils Peak and 
Table Mountain, Camps Bay, collected by F'. Treleaven, C. L. 
Leipoldt, and myself). 
-g. Colowr.—Carapace and limbs chestnut-brown ; carapace clothed 
with olivaceous or greenish-black hairs, but without paler radiating 
stripes, the marginal fringe paler; the short hairs on the legs also 
