1883.] REV. O. p. CAMBRIDGE ON NEW gPIDERS. 359 



anterior surface is flattish, with an exterior angular margin or edge, 

 and their colour is similar to that of the cephalothorax. The colour 

 of the maxillse and labium is like that of the legs, while that of the 

 sternum resembles the cephalothorax. 



The palpi M-e short and strong ; the radial joint is a little shorter 

 than the cubital, and its outer side iias two strong obtuse apophyses ; 

 the anterior is the longest, prominent, and somewhat bent ; from' 

 some points of view these apophyses look like one large bifid pro- 

 jection. The digital joint is large and oviform ; the palpal organs 

 are simple, with a strong corneous process, or spine, round the inner 

 margin. 



The abdomen has its flattened upperside covered with a kind of 

 coriaceous shield, of a deep blackish hue ; around the margins are 

 some short dull golden hairs (possibly these may originally have 

 been more numerous and more widely spread over the surface) ; the 

 sides are of a warm purplish brown, deeply and longitudinally rugu- 

 lose, and the colour of the underside is similar. The spinners are 

 very short and counter-sunk in a sort of pit or depression, heyond 

 the margin of which they scarcely appear. 



An example of this Spider was given to me among tho^e found in 

 CafiFraria by Mr. Mansel Weale. It is a very remarkable one, not 

 only on account of its general form, which gives it some resemblance 

 both to the Drassidee and Palpimanidse, but also in respect to the 

 structure of the legs, especially the long tarsi, which are, as above 

 noticed, scarcely divided from the metatarsi. 



Casturopoda, g. n. (Kaarup, a beaver, oiipa, tail, voSa, feet). 



Cephalothorax broad, rather longer than broad, only slightly con- 

 vex above, broadly truncate in front, and considerably constricted 

 laterally on the margins of the caput, the other normal indentations 

 being obsolete. 



Eyes placed much as in Xysticus, but occupying a wider trans- 

 verse area ; they are small and seated on tubercles ; the fore-laterals 

 are largest, the four centrals very small, and form nearly a square, 

 of which the posterior side is slightly longest ; the hind-central eyes 

 are the smallest. 



Legs moderately long, 2, 1, 3, 4, the difference between 2 and 

 1 very slight. They are strong, especially those of the first and 

 second pairs, whose anterior joints are of a6normal size. The form 

 of the tarsi bears no small resemblance to a beaver's tail. The 

 legs are furnished with short hairs only, those beneath the tarsi 

 forming a scopula ; the tarsi end with two curved (and apparently 

 noupectinated) claws. 



Fakes moderate in length, subconical, massive ; but the fang is 

 short and weak ; on the inner side of the anterior extremity of each 

 falx is a short row of small but distinct denticulations regularly 

 diminishing from the fore extremity. 



Palpi short, ending with a small curved claw. 



Maxilla long, straight, pointed at their extremity on the inner 



