430 rev. o. p. Cambridge on [June 16, 



The cubital joint of the palpus is distinctly longer than the radial. 



From E. dentipalpis (Wid.) and E. promiscua (Cambr.), both of 

 which have a tooth-like spine beneath the radial joint of the palpus, 

 it may also be readily distinguished by being larger, as well as by 

 decided differences in the form of the fore extremity of that joint ; 

 and from all others it differs slightly in the structure of the palpal 

 organs. 



A single example was contained in Mr. Emerton's collection, and 

 was found by him at Beverley, U.S.A., in June 1873. 



Erigone interpres, sp. n. (Plate LV. fig. 1.) 



Adult male, length \\ line. 



The whole of the fore part of this Spider is yellow, the cephalo- 

 thorax and fakes being strongly tinged with orange ; the ocular region 

 and a small space around it is black, and furnished thickly with 

 bristly hairs ; the abdomen is a light drab colour, obscurely reticu- 

 lated with a paler hue, the spinners and a small margin round them 

 being black ; the fore part of the caput is somewhat produced ; the 

 clypeus is impressed, and exceeds in height half that of the facial 

 space ; looked at in profile the ocular region has a somewhat obliquely 

 truncate appearance. 



The eyes are small, dark, rather obscure, and not greatly unequal 

 in size ; they occupy the whole width of the extremity of the caput, 

 forming a pretty regular transverse oval figure double the length of 

 its width ; the foremost row is rather the shortest and least curved ; 

 those of the hinder row are equidistant from each other ; those of 

 each lateral pair are seated a little obliquely on a slight tubercle ; 

 those of the fore central pair are very obscure, small, and nearly con- 

 tiguous to each other, and the interval between each and the fore 

 lateral nearest to it is very nearly equal to that between each hind 

 central and the hind lateral next to it. 



The legs are long and slender ; their relative length appeared to be 

 1, 4, 2, 3, though those of the second pair are very nearly if not 

 quite as long as those of the fourth : they are furnished with hairs 

 and a few bristles ; one of these latter, stronger than the rest, or almost 

 more properly called a slender spine, arises from the fore side of each 

 genual joint. 



The palpi are strong but short, and similar in colour to the legs, 

 except the digital joints, which are brown, and the fore parts of the 

 radials, which are strongly tinged with black ; the cubital joint is 

 very short, rounded above, and somewhat nodiform in appearance : the 

 radial is of the same length as the cubital, strong, and rather spread- 

 ing ; its fore extremity is produced in a somewhat obtusely angular 

 form, and there is a small tooth-like projection directed downward 

 beneath its extreme point. The digital joint is rather large, of a 

 roundish form ; and the palpal organs are prominent and complex ; 

 at their extremity is a strong tortuously curved spine, and near it a 

 slender, filiform, curved, and more prominent one ; beneath their 

 hinder extremity on the outer side is also a strong and rather promi- 

 nent irregular bent corneous process. 



