1872.] NEW SPECIES OF ERIGONE. 761 



The palpi are moderately long and strong ; the cubital joint 

 curves forwards, and has some coarsish dark hairs on its outer side ; 

 it is longer than the radial joint, and slightly clavate at its fore ex- 

 tremity : the radial, though shorter, is stronger than the cubital, 

 and is a little produced at its fore extremity, where it terminates in 

 two small reddish-brown prominent points, the outer one of these 

 being the longest and strongest ; this joint has also some longish 

 coarse hairs near its base on the outer side ; the digital joint is not 

 large; and the palpal organs are well developed and rather complex, 

 of a reddish-brown colour, and with a short, curved, black, corneous, 

 spiny process at their extremity. 



The abdomen is clothed rather more conspicuously with hairs 

 than is usual with Spiders of this genus ; but the form and structure 

 of the legs, falces, maxillae, and labium is of the ordinary character. 

 The colour of the cephalothorax and other fore parts is, in the 

 example described, of a pale yellowish white, the abdomen being of 

 a pale dull sooty black ; but as it had evidently not long effected its 

 last change of skin, the paleness of colouring cannot be taken as a 

 specific character. 



The position of the eyes of the upper pair, with the form and 

 clothing of the cephalic eminence and the structure of the palpi, 

 make this species easily recognizable. 



A single example was sent me for examination by Dr. L. Koch, 

 by whom it was found near Nuremberg. 



Erigone (Walckenaera) similis, sp.n. (Plate LXVI. fig. 18.) 



Male adult, length -Jj of an inch. 



The fore part of this Spider is of a rich deep brown ; the legs and 

 palpi (except the digital joints) orange-coloured, and the abdomen 

 dull greenish sooty black, with pale yellowish lines visible, probably 

 only after immersion in spirit of wine. The upper part of the 

 caput is elevated, and the clypeus bluff, rounded, and prominent ; 

 and a strong indentation, running backwards above and behind each 

 lateral pair of eyes, divides the elevation of the caput laterally from 

 the lower part, while a slight transverse groove divides it from the 

 lower part in front ; the clypeus and upper part of the caput is 

 smooth and glossy, and rather paler than the rest, all of which is 

 covered with minute punctures, as also is the sternum, on which, 

 however, the punctures are of a coarser nature. The eyes are in the 

 usual position — when looked at from the front, nearly a square, the 

 upper side being rather shorter than the lower, the other sides inter- 

 mediate in length between the two. The legs are moderately long and 

 strong, and are furnished with hairs and a few fine erect bristles. 



The palpi are moderate in length ; the cubital joint is short ; the 

 radial is greatly produced at its upper extremity, covering the greater 

 part of the digital joint ; its exact form near the extremity was very 

 difficult to be seen satisfactorily in the only example that has come 

 under my notice ; but it appeared to curve round from the inner to 

 the outer side, and terminate in a sort of point, there being within 

 the curvature a prominent pale and somewhat corneous projection ; 



