MONOGRAPHIA CHALCIDITUM. 



Art. 1. — Monographia Chalciditum. By Francis Walker. 



{Continued from Vol. III. y;ag-e496.) 



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, 

 corpora paullo breviores ; articuli 5°. ad 10^™. longitudine decre- 

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

 mandibulae quadratas, subarcuatse ; una 4-dentata, dens externus 

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

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

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

 longae, angustse, subarcuatas, acuminatae, lobatae; parpi4-articulati, 

 subclavati, articuli l'^^ 2"^. et 3^^. breves subaequales, 4"^ fusi- 

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

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

 brevissimus : thorax ovatus : prothorax brevis : mesothoracis 

 parapsides convexee, prominentes ; suture conspicuas : metathorax 

 mediocris : abdomen cochleatum, planum, thorace paullo longius ; 

 segmentum 1"™. longum, 2^™. et sequentia breviora subagqualia : 

 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 

 lO"'"- 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 

 cicpreum subtus ruftim, antennae nigrce, pedes flavi, proalis 

 fasc'ice 2fuscce. 



Gastracanthus pulcherrimus, Westwood^ Loudon s Mag. Nat. 



Hist. VI. 121. 



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

 antennae nigrae ; articulus l"^. pallide fulvus ; 2"^. nigro-aeneus : 



NO. I. VOL. IV. C 



