212 I\Ir. F. Walker on some new species of Clialcidites. 



reaching beyond the middle of the wing ; humerus long ; ulna short ; 

 radius very short ; cubitus rather short ; stigma large. Length of the 

 body i line ; of the wings \ line. 



Found at Holywood. In Mr. Haliday's collection. 



Trichogramma vitripennis. Fulva.fusco varia, pedibus flavis, alls 

 Utnpidis. 



Body tawny, linear, smooth, shining, paler and somewhat narrower 

 than that of T. evanescens : head and chest convex, slightly varied 

 with brown : abdomen obconical, depressed, apparently quite sessile, 

 a little broader but not longer than the chest, slightly keeled beneath : 

 feelers tawny, clavate, not half the length of the body ; the club is 

 pointed: legs yellow: wings colourless; fore -wings very broad; veins 

 tawny, not reaching beyond the middle of the wing ; humerus mode- 

 rately long ; ulna very short ; radius none ; cubitus long ; stigma 

 small. Length of the body ^ line ; of the wings 5 line. 



Holywood. In Mr. Haliday's collection. 



Oligosita coUina (Haliday MSS.), fern. Lntea, antennis pedibuS' 

 gue flavis, alls limpidis. 



Body rather narrow, bright pale luteous : head hardly broader than 

 the chest : eyes and eyelets piceous ; the former very large : feelers 

 pale yellow, subclavate, brown towards the tips, much more than 

 half the length of the body ; first joint very long ; second cup-shaped ; 

 third and following forming a spindle-shaped club : chest short, 

 nearly flat ; sutures of the segments indistinct : abdomen spindle- 

 shaped, depressed above, hardly keeled beneath, nearly twice the 

 length of the chest to which it is closely applied : legs yellow, slen- 

 der ; four hinder feet pale yellow with brown tips : wings colourless, 

 very narrow, deeply fringed ; veins yellow, reaching a little beyond 

 the middle of the fore-wing ; ulna rather longer than the humerus ; 

 cubitus a little longer than the radius, with which it forms a very 

 acute angle ; wing-brand small, pale brown. Length of the body 

 ^line ; of the wings ^ line. 



On a mountain heath near Belfast. In Mr. Haliday's collection. 



Synopsis of the Trichogrammini. 



" Trib. Trichogrammini. Tarsi trimeri. Tibiae anticse calcari apice 

 inciso. Antennae articulis 6, 3 extremis in clavam coarctatis (an 

 semper ?) : abdomen subsessile : statura Aphelini (^Myinee) fere, et 

 huic magis affines videntur quam Eulophinis ; Oligosita vere pedi- 

 bus gracilibus, tarsis 2^ paris elongatis, alls longe fimbriatis Thy- 

 sani speciem mentitur. 



" Generum conspectus. 



* Alae anticae seriatim pubescentes. 



f Vena costam sinu tantum attingens ad ortum radii. 1. Tricho- 

 gramma, Westwood. 

 ff Vena costam longius decurrens ante ortum radii. 2. Chaeto- 

 stricha, n. g. 



