102 
Annals of the Transvaal Museum 
pace 8-75, length of first leg 32, of second leg 29, of third leg 27-5, of fourth leg 
34-8, of fourth metatarsus 7-4, of fourth tibia 5-6, of first metatarsus 4 - 8, of 
first tibia 4-9, distance from fovea to anterior margin of carapace 7-5, distance 
from fovea to hind border of ocular tubercle 6-i. 
According to Mr van Dam’s note, this species is also a trap-door maker, 
the nest being “like that of a large Acanthodon, the hinge of the lid 20 mm. 
long.” 
The numerous densely disposed cusps on the maxilla would appear to be 
the most distinctive character of the species. In this respect it differs from the 
Malelane specimens of nigrofulvus and from a Tsessebe specimen which pre- 
sumably belongs to crassispina : in a large female from Barkly West, however, 
there are also numerous cusps on the maxilla but hardly so many as in the 
form now described. The type of pluridentatum is perhaps immature but the 
cusps on the maxilla are not likely to decrease with age. 
In the Tsessebe specimen of crassispina, the carapace is 15-5 mm. long and 
the distance from the fovea to its anterior margin slightly exceeds the length 
of the fourth metatarsus: the Barkly West specimen, with carapace 16 mm. 
long, has the length of the fourth metatarsus subequal to the distance from 
the fovea to the anterior margin of the carapace. In both specimens the 
ventral surface of the abdomen is blackened like the sternum. 
Pterinochilus breyeri sp. nov. 
This species is founded on one large female and a half-grown specimen 
taken at Malelane, Barberton dist., by Mr A. Roberts, the former dated Feb. 
1915, the latter 19. vi. 1916. 
The smaller example is about the same size as the type female of P. 
nigrofulvus Pocock, but is clearly different therefrom in the shortness of the 
fourth metatarsus. The most noteworthy feature of the species is however 
the absence of heavy fringes of hairs on the legs : such heavy fringes are specially 
well developed on the lower surfaces of the tibiae of the first two pairs of legs 
in the large species of Pterinochilus 1 found in the Zoutpansberg, Waterberg 
and Rustenburg districts. The ventral surfaces of the sternum and coxae bear 
numerous long red-brown hairs projecting at right angles from the surfaces, 
but there is no velvet such as occurs in the Zoutpansberg species, these red- 
brown hairs being much more sparsely disposed than the shorter hairs which 
compose the velvet of the latter species. The slit of the fovea is narrow and 
quite shallow : at its anterior margin the surface of the carapace rises up con- 
siderably above the bottom of the fovea, but posteriorly the level of the 
carapace scarcely rises above the lowest part of the excavation. In the large 
specimen, radiating lines on the carapace are not sharply indicated for the 
general surface is covered with yellow hairs which occur over the interradial 
regions as well as along the radii, but are not so thickly disposed in the former 
areas : in the small specimen the radiating lines are decidedly well developed 
and besides the numerous golden yellow hairs the carapace bears some whitish 
1 I presume this is the same as P. junodi Simon, described from the Zoutpans- 
berg dist. (Rev. Suisse Zool. xit. p. 66, 1904). It may possibly be the same as P. vorax 
Poc., which, according to E. Strand, is a synonym of P. constrictos Gerst., the species 
being of very wide range in East Africa and recorded by Strand from Bulawayo, 
Victoria Falls and various localities in Mozambique. 
For a list of the recorded species of this genus and a key to the specific characters 
see L. Berland in Voyage de Ch. Alluaud et R. Jeannel en Afrique orientale (1911-1912) . 
Resultats scientifiques. Arachnida in. Paris, 1914. 
