Annals of the Transvaal Museum 
103 
ones, mostly situated near to the fovea, and these in passing along the inter- 
radii become brownish. Ventrally, the black colouration occurs over the 
sternum, the coxae of the legs and palp, the basal portions of the first two 
pairs of legs as far as the basal half of the first tibia and the basal third of the 
second tibia and over the whole of the palp except the tarsus. 
Measurements. Total length 50-5, length of carapace 20, breadth of cara- 
pace 14-25, distance from fovea to anterior margin of carapace 13, distance 
from fovea to posterior margin of ocular tubercle io-i, length of metatarsus I 9, 
of metatarsus IV 11-75, of tibia I 9-35, of tibia IV 9, of apical segment of 
posterior spinners 3, of middle segment thereof 2, of basal segment 3-6, length 
of ocular tubercle 2-2, breadth of ocular tubercle 2-4. 
There are other female specimens in the Transvaal Museum from Hector- 
spruit (F. Streeter). 
Ceratogyrus brachycephalus sp. nov. (PI. I, figs. a-c). 
The types of this species are four female examples collected at N’jelete 
River, Zoutpansberg dist., by Mr G. van Dam during August 1916. 
Colour. The general colour of carapace and appendages is light brown. 
Anteriorly, the upper surface of the abdomen is dark brown with numerous 
small pale spots, but more posteriorly it is pale brown with indications of thin 
dark cross stripes. Ventrally, the sternum and coxae of the appendages are 
blackish : the femora, and to a less extent the remaining segments of the first 
two pairs of legs and of the palp, except the scopulated segments, are deeply 
infuscated : the abdomen also is deeply infuscated except on the lung opercula 
and genital sternite. 
Carapace. This is decidedly longer than the metatarsus and tarsus of the 
fourth leg, and much longer than the tibia and metatarsus of the first leg. No 
trace of pale radial stripes. The horn arising from the fovea is very large and 
is directed horizontally forwards, the apex being not much elevated above the 
level of the carapace anterior thereto: it reaches forwards to a point not far 
from the ocular tubercle, its distance therefrom being subequal to § of the 
breadth of the horn. The excavation of the fovea also extends forwards con- 
siderably, the horn being partly sunk therein and not rising freely from the 
carapace except slightly just at the apex (in one specimen however not even 
at the apex) . The horn varies in size, being sometimes considerably longer than 
metatarsus I, at other times subequal thereto. 
Legs. Tibia I very slightly longer than metatarsus I and subequal to 
tibia IV. 
Measurements. Total length about 53 mm., length of carapace 19-5, 
breadth of carapace 15, length of horn 8, breadth of horn 4-5, length of tibia I 
8- 8, length of metatarsus I 8-2, of metatarsus IV 11, of tibia IV 8-8, length 
of apical segment of posterior spinners 3-2, breadth of ocular tubercle 2-15. 
In another specimen with carapace 18-8 mm. long, the horn measures 7-2 x 
4-35: a third example with carapace 18-5 mm. long has a horn measuring 
9- 3 x 4-4. 
The Albany Museum has specimens of this form from Tsessebe (E. C. 
Wilmot), and it is noteworthy that another species was taken in the same 
neighbourhood by Mr Wilmot: this latter seems very near to C. darlingi 
Pocock, described from Enkeldoorn, a locality no miles S. of Salisbury ( Proc . 
Zool. Soc. 1897, p. 754, PI. XLII, fig. 5 and PI. XLIII, figs. 1-1 a). 
