88 Annals of the South African Museum. 



no internal spines ; metatarsus almost straight or very slightly 

 curved, without concavity or thickening near base on inner surface, 

 and furnished with 1-2 internal and 3-4 external spines ; tarsus 

 with 0-1 internal and 0-3 external spines. All the tarsi scopulate 

 to the base. Metatarsi not scopulate. 

 Total length 8*-ll|- mm. 



2. ACANTHODON SPIEICOLA n. Sp. 



Types. 2 ad. 5 $ (Nos. 12413-4, one with young) and 6 nests, 

 found by the Eev. F. C. Kolbe under the shelter of roots in forests 

 near the village of Kentani, Cape Colony, in 1902. 



? 5 . Colour yellow ; abdomen pallid, with the dorsal surface 

 infuscated ; cephalic portion of carapace slightly brown in places in 

 one specimen. 



Carapace (measured across outer side of frontal eye-tubercle) as 

 long as the tibia, metatarsus, and tarsus of fourth leg and as the 

 patella, tibia, and metatarsus of first leg. 



Ocular area as long as wide, its width f or slightly more of the 

 length of the metatarsus of first leg. The area formed by the 

 anterior lateral and anterior median eyes wider in front than behind 

 and nearly twice as long as its posterior width, the median eyes 

 about an eye's diameter apart ; the anterior lateral eyes and the 

 eyes of the posterior row like those of A. kolbei Pure. (Trans. S. A. 

 Phil. Soc., v. 11, p. 354). 



Legs much as in A, kolbei, but the tibia of third leg with 5-10 

 spines in the posterior dorsal band. 



Ldbium with 2-4 apical teeth. 



Abdomen not tuberculate above. 



Total length 18 mm. ; length of carapace 5'8, width 4^. 



Nests. The silken tube is cylindrical, and always descends 

 spirally to a depth of 6-8 cm. in the manner represented in the 

 accompanying figure, which shows the nest in section seen with the 

 hinge on the left. In the deeper part the tube is gradually widened, 

 while at the upper end it becomes compressed and has an oval 

 opening. The edges of the tube-lining are spread out horizontally 

 on the surface of the ground, forming a flat rim about 1 mm. wide 

 all round, except at the middle of the hinge. The latter is broad 

 and situated along one of the longer sides of the oval rim. The lid, 

 which is D-shaped in outline, is peculiar. Its upper surface is 

 strongly but irregularly convex and covered with earth and a 

 minute green vegetable growth and often also tiny pieces of moss- 



