128 Mr. F. Walker on some new species 0/ Chalcidites. 



the base, tapering towards the tip, keeled beneath, about twice the 

 length of the chest ; metapodeon bright coppery green along the 

 hind- border, rather less than one-fourth of the length of the abdo- 

 men ; octoon coppery green, not half the length of the metapodeon ; 

 ennaton a little longer than the octoon, coppery, purplish blue at 

 the base ; decaton a little longer than the ennaton, with which it 

 agrees in colour ; protelum coppery, much shorter than the decaton ; 

 paratelum spindle-shaped, slightly compressed, much longer than the 

 decaton ; telum about half the length and breadth of the paratelum : 

 oviduct springing from the base of the abdomen and reposing in a 

 groove from thence to the tip : legs bluish green ; shanks armed with 

 two spines at their tips, those of the four hinder shanks long ; tro- 

 chanters piceous ; knees and feet tawny ; tips of the latter piceous : 

 wings pubescent, but nearly naked at the base, and along two nar- 

 row lines which have a common source and pass along nearly the 

 whole length of the wing ; there is a large pale brown spot in the 

 disc of each fore-wing beneath the ulna ; veins piceous ; ulna a little 

 more than half the length of the humerus ; radius about one-fourth 

 of the length of the ulna; cubitus thick and extremely short, not 

 half the length of the radius ; brand none. Length of the body 1^ 

 line ; of the wings 2 lines. 



Prussia. In the British Museum. 



Pachyneuron Pruni (Foerster MSS.), fern. Viridi-cyaneus, abdo- 

 mine angusto, antennis nigris, pedibus fulvis, mesotarsis et mettt' 

 tarsis flavis, alis limpidis. 



In structure like P. formosum : head and chest greenish blue, 

 finely shagreened : feelers black : abdomen oval, smooth, shining, 

 green or bluish green, depressed above, keeled beneath, mucli nar- 

 row^er but not longer than the chest : legs tawny ; hips green ; middle 

 and hind feet yellow with piceous tips : wings colourless ; veins 

 piceous ; ulna thick, less than half the length of the humerus ; radius 

 nearly twice the length of the ulna; cubitus as long as the ulna; 

 brand small. Length of the body i— J line ; of the wings ^-1^ line. 



Prussia. In the British Museum. 



Pteromalus laticeps (Foerster MSS.), fem. jEneo-viridis, capita et 

 scutello cyaneis, ahdomine purpureo-cupreo, basi viridi, anten7iis 

 nigris, pedibus jlavis,femoribus protibiis et jwotarsis fulvis, alis 

 limpidis. 



Head and chest convex, finely shagreened : head dark blue, a little 

 broader than the chest : eyes and eyelets red : feelers pubescent, 

 black, clavate, as long as the chest ; first joint long, linear, bright 

 pale yellow ; second piceous, shining ; third and fourth very small ; 

 the following joints from the fifth to the tenth successively increasing 

 in breadth and decreasing in length ; club conical, hardly broader 

 than the tenth joint, but about twice its length : chest coppery green, 

 nearly oval, narrower behind : fore-chest rather short, convex in 

 front, concave behind ; its length about one-fourth of its breadth : 

 shield of the mid-chest broader than long ; sutures of the parapsidea 



