30 MONOGRAPHIA CHALCIDITUM. 
Sp.12. Ent. Caesius. Mas. Nigro-purpureus, abdomen flavo 
maculatum, pedes flavi, ale limpide. 
Nigro-purpureus: caput cyaneo-viride: oculi et ocelli rufi: antenna 
fusca; articuli 1". et 2". nigri: petiolus ater; abdomen nigro- 
cupreum; discus luteus: pedes late flavi; coxe nigro-pur- 
puree ; ungues et pulvilli fulvi: alee limpide; squamule picez ; 
nervi fulvi. (Corp. long. lin. 3; alar. lin. 1.) 
October; near London. 
Mas.—Corpus breve, nitens, scitissime squameum, parce hirtum: 
caput transversum, convexum, sat magnum; yertex latus, non 
impressus; frons abrupte declivis: antennz 8-articulatz, sub- 
moniliformes, corporis dimidio vix longiores; articulus 1". longus, 
validus, sublinearis ; 2"*. eyathiformis; 3"*. parvus; 4". 5"*. et 6", 
transversi, lineares, subeequales; 7“. et 8". clavam fingentes coni- 
cam acuminatam setigeram : thorax ovatus, crassus, convexus ; 
prothorax brevis, supra conspicuus: mesothoracis scutum longi- 
tudine latius; parapsidum suture remote, bene determinate ; 
scutellum angustum, longi-obconicum: metathorax magnus, trans- 
versus, postice angustior: petiolus mediocris, gracilis: abdomen 
conicum, lave, planum, thorace multo brevius et angustius: pedes 
graciles, simplices, recti, subsequales: proale late, apice quasi 
truncate ; nervus ulnaris humerali longior, radialis longus, cubi- 
talis brevis. 
Fem.—Caput mediocre, quam mari brevius; vertex subimpressus: 
antennze graciliores, moniliformes; articulus 1". longifusiformis, 
robustus; 3"*. longus; 4”. et 5"*. breviores, subsequales: clava 
fusiformis, acuminata, articulo 5°. gracilior et multo longior: ab- 
domen quam mari paullo longius. 
Sp. 13. Ent. gemmeus. Maset Fem. uber, cupreo et pur- 
pureo varius, antenne nigre, abdomen flaco maculatum, pedes 
flat, ale limpide. 
Derostenus gemmeus. Westwood, Loudon’s Mag. Nat. Hist. 
VI. 495. 
Letissime rubro-cupreus: frons viridis: oculi et ocelli rufi: an- 
tenn nigra; articuli 1"*. et 2"*. obscure virides: metathorax 
zeneo-viridis: petiolus nigro-cupreus: abdomen aureo-viride ; 
discus rubro-cupreus, basi flavus: sexualia flava: pedes pallide 
flavi ; coxee cupree ; tarsi apice fulvi: ale limpide ; squamule 
fulve, antice cupreee; nervi proalis fulvi, metalis flavi. (Corp. 
long. lin. 3—1; alar, lin. 1—14.) 
