626 REV. O. p. CAMBRIDGE ON [NoV, 18, 



The eyes are in the normal position, but those of the hind central 

 pair are much nearer together than each is to the lateral eye on its 

 side in the same row, the interval being nearly double the extent of 

 that between the centrals. 



The legs are moderate in length and strength, 1, 4, 2, 3, destitute 

 of spines, but pretty densely clothed with hairs, those beneath the 

 metatarsi and tarsi almost amounting to a scopula ; terminal claws 

 strong, those of the superior pair furnished with 6-7 small close-set 

 teeth towards their base. 



The palpi are rather long, slender. The radial joint is double the 

 length of the cubital, and has a bifid projection at its outer extremity, 

 the lower limb being longest and strongest. The digital joint is long 

 narrow-oval. The palpal organs are simple, not very prominent, with 

 a slender reddish filiform spine round their margins on the outer side. 



The abdomen is densely clothed with short pale brownish hairs. 

 Spinners normal. 



The sexes resemble each other. 



This fine Spider is nearly allied to Robsonia marina, Hector, a 

 New-Zealand species (P. Z. S. 1879, p. 687, pL lii. fig. 4), 

 resembling it closely in general form and structure ; but it may easily 

 be distinguished by its larger size, stouter form, much denser hairy 

 clothing, and (notably) by the total absence of spines on the legs, 

 and the relative position of the eyes, those of the posterior row in 

 B. marina being separated from each other by equal intervals, while 

 in the present species the interval between the central pair is nearly, 

 if not quite, double that between each and the lateral eye next to it. 



I have no information respecting the habits of this Spider, but 

 from its near alliance to the New-Zealand species I should imagine 

 it to be semi-aquatic like that one. 



Hab. Cape of Good Hope. 



Fam. ERESiDiE. 

 Genus Stegodyphus, Sim. 



Stegodyphus gregarius, Cambr. P. Z. S. 1889, p. 42, pi. ii. 

 figs. 4, 5. 



Several adult females of this Spider were among those submitted 

 to me by Mr. F. Taylor from S. Africa, and forwarded to him by 

 the Rev. Nendick Abraham. Nests of this species appear, from Mr. 

 Abraham's account, to attain a great size, sometimes as much as 12 

 feet in extent. Their habits in nature, from Mr. Abraham's account, 

 seem to correspond very closely with those evidenced by them in 

 captivity in the Society's Gardens (see I. c. supra). 



Fam. EpEiRiDiE. 



Genus Argyroepeira. 



Argyroepeira blanda, sp. u. (Plate LIII. fig. 6.) 



Length of an immature female, 4 lines. 



This species is of the ordinary form. The whole of the fore part 

 (including the cephalothorav, legs, and fakes) yellow. Legs rather 



