256 
Annals of the Transvaal Museum 
Cormocephalus anceps Porath. 
Habitat: Venterskroon (Distr. Potchefstroom) (G. van Dam); Woodbush 
Village (P. Methuen); Doornkop, near Belfast (Tvl.) (R. Gerhardt); Port 
Elizabeth; Capetown; Kimberley and Natal; Roodepoort Dist., Pretoria 
(G. P. F. van Dam); Grahamstown (G. P. F. van Dam). 
Cormocephalus calcar atus Porath. 
Habitat : Sunnyside, Pretoria (P. Penfold). 
Fig. 20. 
Femur of anal leg of Cormocephalus 
calcaratus Porath, indicating the 
armature. (From Revision der 
Scolopendriden, Kraepelin.) 
20 
Cormocephalus dispar Porath. 
Habitat : Sunnyside, Pretoria (B. Penfold); and several other localities in 
the Transvaal. 
Key to the South African species of the Genus C 0RM0CEPHALUS . 
1 . First tergite generally without even a trace of a pair of median sulci. 
Marginations never begin beyond 17th somite. Process of pleura 
bifid, head-plate very often with basal-plates and a pair of abbrevi- 
ated median sulci. Femur of anal legs armed on ventral outer surface 
normally with two rows of spines, which may number 2, 2 up to 4, 5. 
Claws of anal legs usually without spurs. Sternocoxal plate (pro- 
sternal plate) without fine undulating transverse sulci on anterior 
third ........... 2 
2 . Femur of anal legs on ventral outer surface armed normally with 2, 2 
spines. Last or anal tergite with single median sulcus ... 3 
Femur of anal legs armed on ventral outer surface normally with 2, 3 
(seldom 1, 3) up to 5, 5 spines. Last or anal tergite without median 
sulcus ........... 6 
3 . Marginations of tergites begin from third to sixth somite. Segments of 
antennae elongate, longer than broad ...... 4 
Marginations of tergites begin from eighth to thirteenth somite. Seg- 
ments of antennae generally scarcely longer than broad ... 5 
4 . All the legs (exc. 21st pair) carry spurs to claws; prosternal dentiferous 
plate separated by a narrow fissure . . . C. dispar Porath 
5 . Anal tergite with median sulcus. Porous area of pleurae a narrow oval, 
hardly broader than the smooth outer margin of the pleura, neither 
does it extend to the posterior margin usually without a spine. 
Femur of the anal legs on dorsal inner surface usually with one spine 
besides the terminal bifid spine. Length only up to 45 mm. 
G. setiger Porath 
6. From 5-8 segments of antennae naked, seldom 9 or 10, and in the latter 
case marginations begin from 6th-gth tergite .... 7 
11-16 segments of antennae naked (seldom only 9). Marginations of 
tergites begin from 12th- 17th somite (seldom from 9th). Anal 
tergite with or without faint median sulcus (often only an indication 
on posterior half) ...... C. anceps Porath 
