Annals of the Tbansvaal Museum. 97 
below, tbe scopula increasing* in thickness from the first to the 
fourth 39 : in the Saltpan specimen, tarsus I has numerous short and 
fairly stout spines interiorly, scopular hairs being limited to a narrow 
lateral patch on each side in the distal third of the segment, II with- 
out distinct spines below, but with a narrow mesial strip of spiniform 
setae completely dividing the scopula, which is present in the distal 
2 to 3,/5ths of the length of the segment, III and IV with large 
undivided scopulae extending' almost to the base. The area formed 
by the frontal and anterior median eyes is much broader behind than 
in front : frontals very slightly more than £ of a diameter apart. 
Idiops Gunningi , Hewitt, var. nov. elongatus. (Records Albany 
Museum II, p. 417). 
This new variety is founded on 6 specimens, of which 4 are adult 
females, from Moorddrift, Waterberg District (C. J. Swierstra and 
A. Roberts). It differs from the typical form of Gunningi, as known 
to me from the single type specimen, in the following respects : 
Carapace a little longer than the tibia and metatarsus of the fourth 
leg (a little shorter than the tibia and metatarsus of the fourth leg in 
the type) : ocular area narrower, its width being very slightly less 
than the length of tibia II measured along the dorsal midline (very 
slightly exceeding the length of tibia II in the type : the spines on 
the anterior side of' patella IV more numerous, those in the distal half 
arranged in 3 or 4 rows (arranged in a double row in the type). Other 
characters are as follows: — Frontal eyes about J of a diameter apart, 
but in one specimen | of a diameter apart : quadrangle formed by the 
frontal and anterior median eyes broader behind and quite twice as 
long as the posterior width : quadrangle formed by the four median 
eyes either a trifle broader in front or subequal before and behind, 
or a trifle broader behind : distance between post median and post 
lateral eyes about II to times the distance between the post 
medians : posterior margins of posterior row of eyes about in the same 
transverse line. Anterior surface of patella IV spined over its whole 
length. Tibia IV usually without spines on its anterior surface, 
excluding those inferiorly situated, but one specimen has 2 spines on 
one side and 1 on the other, and another specimen has 1 spine on one 
side only. Tibia II with 11-13 spines on its anterior side, but only 
8 in a specimen which is apparently not quite mature. 
Measurements . — 
Total length 33 mm. 
Length of carapace 13.9 mm. 
Breadth of carapace 11 mm. 
Colour . — Carapace pale brown, appendages reddish brown. 
The following species of Idiops* have been described from South 
Africa : — 
/. Pretoriae (Poc.), said to have come from Pretoria (A.M.N.H. 
7, 1, p. 319). — Male. The supposed female of this species, 
found in Pretoria, was described by me (Ann. Transvaal 
Museum II, p. 74), but subsequently females belonging* 
* The first species recorded from South Africa under this generic name is I. tliorelli , O.P. 
Carb. (P.Z.S. 1870 p. 156). In P.Z.S. 1897, p. 781, Mr. Pocock refers this species to the 
genus Acanthodon, but subsequently (A.M.N.PT. VII. 1, p. 820) he includes with it in that 
genus a species, which we now refer to as Idiops, and evidently regarded the two genera 
as synonymous. I have examined the type of thorelli and find it to be a true Acanthodon. 
