MONOGRAPHIA CHALCIDITUM. 



Art. I. — Monographia Chalciditum. By Francis Walker. 



(Continued from Vol. III. page 496.) 



the green myriads in the peopled grass. 



Pteromalus. 



Sectio XLIX— Mas et Fern. 



Gastracanthus et Hetroxys, Westwood. 



Mas. — Caput magnum, thorace latius : antennae filiformes, hirti, 

 corpore paullo breviores ; articuli 5°. ad 10 um . longitudine decre- 

 scentes ; clava fusiformis, acuminata, articulo 10°. multo longior : 

 mandibular quadratae, subarcuatae ; una 4-dentata, dens externus 

 mediocris incurvus acutus, 2 US . 3 US . et 4 US . breves obtusi ; altera 

 3-dentata, dens externus major incurvus acutus, 2 US . mediocris 

 subacutus, 3 US . brevis latus obtusus : maxillae breves ; laciniae 

 longae, angustae, subarcuatae, acuminatae, lobatae; palpi 4-articulati, 

 subclavati, articuli l us . 2 US . et 3 US . breves subaequales, 4 US . fusi- 

 formis longior: labium breve, obconicum ; ligula brevis, antice 

 lata et ciliata ; palpi 3-articulati breves crassi, articulus 2 US . 

 brevissimus : thorax ovatus : prothorax brevis : mesothoracis 

 parapsides convexae, prominentes ; suturae conspicuas : metathorax 

 mediocris : abdomen cochleatum, planum, thorace paullo longius ; 

 segmentum l um . longum, 2 um . et sequentia breviora subaequalia : 

 pedes subaequales : alae amplae ; nervus humeralis ramulum 

 brevem rejiciens ; radialis cubitali ramulum brevissimum emittente 

 plus duplo longior. 



Fern. — Antennae clavatae, corporis dimidio longiores ; articuli 5°. ad 

 10 um - longitudine decrescentes ; clava ovata, articulo 10°. paullo 

 latior et duplo longior : abdomen fusiforme, thorace paullo angus- 

 tius et dimidio aut duplo longius, apicem versus attenuatum 

 acuminatum pubescens, non angulatum ; segmenta subaequalia : 

 oviductus dum quietem agit occultus. 



Sp. 164. Pter. pulcherrimus. Fem. Viridi-ceneus, abdomen 

 cupreum subtus rufum, antennce nigrcz, pedes Jlavi, proalis 

 fascice 2fuscce. 



Gastracanthus pulcherrimus, Westwood, Loudon s Mag. Nat. 

 Hist. VI. 121. 



Caput viridi-aeneum, supra cupreum : oculi ocellique rufo-picei : 

 antennae nigrae ; articulus l us . pallide fulvus ; 2 US . nigro-aeneus : 



NO. I. VOL. IV. C 



