MONOGRAPHIA CHALCIDUM. 465 



breves, filiformes ; articulus P'. brevis ; 2"'. longior ; 3"'. 2°. 

 longior, acuminatus : mentum elongatum, angustum, postice 

 conicum : labium breve, antice rotundatum : palpi labiales 2-arti- 

 culati, breves : thorax ovatus : prothorax parvus : mesothoracis 

 scutum breve, suturse vix conspicuae ; scutellum magnum, latum ; 

 paraptera magna : metathoracis scutellum magnum : petiolus 

 brevissimus : maris abdomen latum, fere rotundum, supra minime 

 convexum, subtus planum ; segmentum 2""". elongatum ; 3"". 

 brevius ; sequentia brevissima : fern, abdomen ovatum, supra 

 convexum, subtus carinatum ; pedes graciles ; tibiae rectse. 



Sp. 1. Micr. rufo-maculatus. Mas et Fem. Viridis aid 

 viridi-csneus, abdominis disco riifo, antennis fuscis, pedibiis 

 rufis, alis subfuscis aiit hyalinis. (Alarum longitude, 

 1-1 lin.) 



June ; grass in fields ; near London. New Lanark, Scot- 

 land. 



Sp. 2. Micr. pyrrhogaster. Mas et Fem. Viridis aid 

 viridi-ceneus, ahdomine rufo, apice nigro, antennis fuscis, 

 pedibus rufis , alis vix tdlis. (Corporis longitudo, I — 

 1 lin.) 



Pteromalus pyrrhogaster. Haliday. Curtis' Guide. 



Grass in fields ; throughout the year ; near London. New 

 Lanark, Scotland. 



Genus XIV. Isocyrtus,^ Walker. 



Caput magnum, thorace multo latins : oculi mediocres : antennae 

 12-articulatse, subclavatae, thorace breviores ; articulus 1"\ vix 

 elongatus ; 2"^ cyathiformis ; 3"\ et 4"% minimi ; 5"^ et sequen- 

 tes ad lO"". aequales ; clava triarticulata, elongata, apice conica, 

 articulis 8°. et 9". paullo longior : thorax elongatus : prothoracis 

 scutellum mediocre : mesothoracis scutum magnum, suturae 

 laterales indistinctae ; paraptera et epimera bene determinata ; 

 scutellum magnum, convexum : metathoracis scutellum conspi- 

 cuum, supra carinatum : petiolus brevis : abdomen elongato- 

 ovatum, supra depressum, subtus carinatum, apice acuminatum ; 

 segmenta 2"™. et 3"". magna ; sequentia parva : pedes sub- 

 aequales, graciles ; tibiae rectae. 



f "iffos sequalis, Kvpros curvus. 

 NO. V. VOL. I. 3 O 



