260 NEWMAN ON TENTHREDININA. 



Sp. 1. Euura gallae. Nigra : antennis nigris, apice ferru- 



gineis : pedibus pallidis. 

 Black: mouth yellow ; antennae rust-coloured at the tip ; the legs 



entirely pale. 



The insect is the size of Nematus pallipes : the only specimen 

 I have observed was taken by Mr. Walker, in Scotland. 



Sp. 2. Euura cynips. Nigra : antennis mare ferrugineis : fem. 

 nigris: pedibus pallidis, tarsis fuscis. 



Black : mouth ferruginous : antennae of the male dull ferruginous* 

 with the exception of the basal joint, which is jetty black ; of the 

 female, very obscurely ferruginous towards the apex : legs pale 

 yellow, with the tarsi fuscous. 



This insect is abundant, and appears universally distributed : 

 it is less than half the size of the preceding ; may be beaten off 

 willows, in the leaves of which the larva forms excrescences, in 

 the neighbourhood of London throughout the summer. On 

 referring to Mr. Stephens's species Nematus gallicola, I find 

 the description would suit my insect very tolerably ; but yet 

 that insect, (I speak of Mr. Stephens's specimens,) has no 

 other characters than size and distribution of colour in common 

 with Euura. 



Genus. — Nematus. Leach. 



Sp. 1. Nematus tibialis. Flamts : ocidis, antennis, dorsoque 

 nigris ; pedibus flams ; metatibiis metatarsisque nigerrimis. 



Yellow : eyes, upper side of the antennae, crown of the head, and a 

 large block occupying the dorsal portion of every segment, black ; 

 the mesoscutellum alone yellow : the legs are yellow, with the ex- 

 ception of the hind tibiae and tarsi, which are jet black : the nervures 

 of the wings are intensely black. 



This insect is from the Isle of Wight, where it was taken by 

 Mr. Walker. The black hind tibiae are very conspicuous, and 

 distinguish from the other species I possess : its size corre- 

 sponds with that of Nematus luteus, Fab. In the species nearly 

 allied to the one before me, I fear Messrs. Stephens and Le 

 Pelletier St. Fargeau have carried division much too far ; but I 

 must not attempt the task of reducing this fearful group. 



