368 On a neio Genus and Spsciea o/Sollfugae. 



Abdomen. — Third segment furnished, on either side of the 

 stigmata, with a transverse series of curved spines (five in 

 number on each side in perfect specimens?), some of which 

 are much stouter than the others. Fourth segment with a 

 transverse series of fine set£e. 



Chelicera furnished with two strong spines at the side 

 above. Immovable finger strongly curved at the end ; its 

 edge is armed- with a series of about twelve minute teetli, 

 commencing at a considerable distance from the point ; the 

 first (front) tooth is the largest and the fourth is the next 

 largest ; the anterior of the two intermediate teeth is very 

 minute. Dorsal process of immovable finger slender and 

 much shorter than the terminal part of the finger. Edge of 

 movable finger furnished in the middle with two slight and 

 inconspicuous teeth, which are placed at some distance from 

 one another. 



A thin, hairy, wing-shaped plate is present on the inner 

 side of the chelicera ; the flagellum, which arises just below 

 this plate, is shorter than it, and is rather narrow and shaped 

 rather like a horn (fig. 2). 



Maxillipalp. — Tarsus unarmed and fairly short. Tibia 

 shorter than the patella and swollen on the inner side, the 

 swelling being furnished with seven or eight spines, which, 

 with the exception of the two upper ones, are rather long ; 

 another fairly long spine is present a little in front of the 

 others at a short distance from the apex of the segment. 



Colour yellowish; ocular tubercle black; abdomen appa- 

 rently a little darkened both above and below ; patella, tibia, 

 and tarsus of maxillipalp pale brown, the tibia and tarsus 

 being a little darker than the patella ; distal end of the femur 

 and the patella of the fourth leg also pale brown in colour. 



Size. — Length of the body 11*25 mm. 



Material. — A single male example, captured near Biskra, 

 Algeria, in 1903 by Lord Walsinghara. 



Remarks. — This new genus is closely allied to the Egyptian 

 genus Barrus and to the genus Rhinippus^ Werner (in- 

 habiting Asia Minor), each of which contains only a single 

 species. It differs from Barrus in having the anterior mar- 

 gin almost straight and in having the spines of the head-plate 

 placed on a sliglit eminence, their bases being situated close 

 together. From Rhinippus it differs in the larger number of 

 the spines on the ocular tubercle, in the presence of spines on 

 the head-plate, and in the possession of a flagellum. 



