18/2.] NEW SPECIES OF ERIGONE. 763 



A single example of this species was received for examination from 

 Dr. L. Koch, by whom it was captured at Nuremberg. It is nearly 

 allied to W. picina (Bl.), but differs in the structure of the palpi, 

 as well as slightly in the form of the cephalothorax. 



Erigone (Walckenaera) saltuensis, sp. n. (Plate LXVI. 

 fig. 20.) 



Male adult, length 1 1^6=^ of an inch ; female adult, ^ of an 

 inch. 



This species is closely allied to Walckenaera minima (Cambr.) 

 (JV.pusilla, Westr.), but is larger, and, though resembling it a good 

 deal in general appearance, differs in some well-marked characters. 



The cephalic eminence is broad, but not very high. The trans- 

 verse line of the summit (when looked at from the front) is slightly 

 hollowed ; it is also constricted laterally at its base, and has a well- 

 marked longitudinal indentation, which runs backwards from each 

 lateral pair of eyes, besides a considerable excavation on either side 

 beneath the occiput. The clypeus is nearly perpendicular from a 

 very little way below the fore central eyes ; and its height is nearly 

 two thirds of that of the facial space. The sloping and vertical space 

 between and below the four central eyes is clothed with short, strong, 

 divergent hairs. 



The eyes of the hinder or upper pair occupy the fore corners of 

 the cephalic eminence, and are thus very wide apart, as wide 

 apart as, or even wider than, the two lateral pairs ; these and the 

 eyes of the hinder pair form a rectangle whose transverse diameter 

 is nearly double that of its longitudinal one. The eyes of the fore 

 central pair are the smallest of the eight, near together, and situated 

 a very little above the straight line of the lateral pairs. 



The legs of the fourth pair are perceptibly longer and slenderer 

 than those of the first ; their relative length is 4, 1, 2, 3 ; and 

 their colour is a dull orange-yellow tinged with brown ; they are 

 furnished with hairs ; and a short, erect, black, spiny bristle issues 

 from near the centre, on the upperside, of the tibise of the fourth pair. 



The palpi are strong ; the cubital joint is clavate and rather 

 gibbous on the upperside : the radial joint is shorter and less 

 strong than the cubital, and has its upper extremity slightly pro- 

 duced ; the produced part is emarginate at its extremity, and has a 

 small tubercular prominence near its base, on the inner side ; this 

 production and prominence are of a deep red-brown colour, the rest 

 of the joint being pale yellow-brown : the digital joint is rather 

 large, and has a conical prominence at its base, on the inner side. 

 The palpal organs are rather complex ; they have a curved corneous 

 process at their base near the extremity, on the outer side, of the 

 radial joint, and a short, prominent, tapering black spine, curved in 

 a somewhat circular form, at their outer extremity. 



The falces are strong, straight, perpendicular, and equal in length 

 to the height of the clypeus. 



The colour of the cephalothorax is dark brown, mixed with 

 blackish and tinged with yellow, the upper part of the cephalic 



