18 MONOGRAPHIA CHALCIDITUM, 
ocelli 3 vertice triangulum fingentes: antennee 6-articulate, 
clavate, corporis dimidio longiores, ad os insert; articulus 1%. 
longus, gracilis, linearis, subarcuatus; 2". mediocris, longi- 
eyathiformis; 3". et 4", minuti; 5". latior; 6%. fusiformis, 
apice acuminatus, 4°, multo longior et latior: thorax ovatus, fere 
planus, apice insolito angustus: prothorax brevissimus, supra 
non conspicuus: mesothoracis scutum transversum, breve; para- 
psides non bene determinate ; scutellum latum, breviobconicum : 
metathorax mediocris: abdomen ovatum, cochleatum, basi an- 
gustum, thorace paullo angustius vix brevius; segmentum 1". 
magnum; 2°”. et sequentia breviora, transversa, subsequalia : 
oviductus occultus: pedes graciles, simplices, sat longi; tar- 
sorum articulus L"*. longus, 2"*. et 3"*. breves, 4"*, longior; ungues 
et pulvilli minuti: ale longs, iridescentes, pubescentes, ciliatee : 
proalis nervus solitus coste triente fere duplo longior; ulnaris 
humerali multo longior cillis nonnullis rigidis armatus; cubitalis 
longus, crassus, in alee discum abrupte declivis et radiali bre- 
vissimo angulum fere rectum fingens; stigma vix conspicuum: 
metalis nervus unicus simplex. 
Sp. 7. Ptero. Menes. Mas. Cyaneo-ater, abdomen flavum, 
antenne flava, pedes flavi, ale limpide. 
Cyaneo-ater: oculi et ocelli picei: antenna lete flava; articulus 
1"*. albidus; 2"*. pallide fuscus: abdomen flavum; discus fusco 
tricinctus : pedes lete flavi; coxa basi nigrae; ungues et pul- 
villi fulvi: alee limpide ; squamulz et nervi fulva: metalis nervi 
flavi. (Corp. long. lin. $5 alar. lin. 3.) 
Var. 3.—Abdomen omnino flavum. 
Found near London. 
Secrio VIII. 
Fem.—Corpus minutum, angustum, sat validum, nitens, leeve, parce 
hirtum: caput mediocre, transversum, breve, thorace fere latius ; 
vertex sat latus; frons abrupte declivis: oculi magni, vix ex- 
tantes: ocelli 3 vertice triangulum fingentes: antenne 6-articu- 
latee, fusiformes, corporis dimidio paullo longiores ; articulus 1". 
longus, gracilis, fusiformis ; 2"*. mediocris, cyathiformis; 3", 4°. 
et 5". breves; 6". fusiformis, acuminatus, 5°. multo longior : 
thorax subquadratus, convexus, latitudine non longior: pro- 
thorax minimus, supra non conspicuus: mesothoracis scutum 
et scutellum transversa: metathorax brevissimus: abdomen 
