416 REV. O. P. CAMBRIDGE ON NEW DRASSIDES. [June 2, 



underside is bright reddish yellow-brown, sparingly clothed with 

 short white hairs ; the fore part of the underside is covered with a 

 continuous kind of red-brown shield, comprising the two spiracular 

 plates. The spinners are short, blackish, tipped with pale yellowish ; 

 those of the inferior are rather longer and much stronger than those 

 of the superior pair. 



A single adult male was received several years ago from the 

 Andes of South America. 



Agrceca walsinghami, sp. n. 



Adult male, length rather more than 3 lines. 



This species is very nearly allied to the foregoing, which it re- 

 sembles in size, form, and general structure ; the colour and mark- 

 ings, however, of the foregoing will distinguish it at once from the 

 present Spider. 



The eephalothorax is deep black-brown, uniformly clothed with 

 short whitish hairs ; the legs of the first two pairs have the femora 

 deep black -brown, thinly clothed with short white hairs, the rest 

 dull yellowish, tinged with olive ; the femora of the third and fourth 

 pairs are the same in colour and clothing as those of the first and 

 second ; but the remainder is of a dark red-brown, the metatarsi 

 of the fourth pair having a few white hairs dispersed over them ; 

 all the legs are armed with a few fine spines ; and the tarsi have two 

 terminal claws, beneath which is a claw-tuft ; the coxal and exin- 

 guinal joints of all the legs are deep blackish brown, as also is the 

 sternum. 



The falces are stronger than in A. pulcherrima, and are of a deep 

 blackish red-brown colour. 



The maxilla and labium are dark red-brown, tipped with pale 

 yellowish. 



The palpi are short, of a dark yellowish-brown colour, the humeral 

 joint the darkest ; the radial is stronger and slightly longer than 

 the cubital, of a similar form beneath, as in the foregoing species, 

 but the angularly prominent portion is rather more marked ; the 

 digital joint is large, long, and like that of the foregoing in form ; 

 the palpal organs are also very similar, but there are no sinuous 

 lines apparent on the surface of the main lobe, and the part pro- 

 duced forwards appears to terminate more obtusely, without the 

 spiny point visible in that species. 



The abdomen is of an oblong-oval form ; the greater part of the 

 upperside is covered with a well-defined, oval, coriaceous distinct 

 epidermis of a reddish yellow-brown colour ; the fore part is darker 

 than the rest, and is clothed thinly with short white hairs, the rest 

 with short bright yellow-red ones ; the sides and hinder part are of 

 a foxy red, clothed with red hairs, and some white ones between the 

 sides and underside ; the underside is dark yellowish brown, clothed 

 thinly with short pale whitish hairs. A coriaceous covering of a 

 deep red-brown colour beneath the fore part, similar to that in the 

 foregoing species, comprises the spiracular plates ; the spinners are 

 very short, scarcely perceptible without difficulty. 



