MONOGRAPHIA CHALCIDITUM. 209 
Nigro-zneus: oculi et ocelli rufi: antennz fuse; articulus 1”. 
luteus: abdomen cupreum, basi viridi-zeneum: pedes lutei; coxze 
nigro-zne; femora fulva; tarsi apice fulvi: ale subfulve ; 
squamulze fulvee ; nervi proalis fulvi, metalis flavi. (Corp. long. 
lin. 33 alar. lin. 4.) 
Found by Mr. Haliday, at Holywood, near Belfast, Ireland. 
Genus.—Gastrancistrus, Westwood. 
Fem.—Corpus crassum, nitens, scitissime squameum, parce hirtum : 
caput transversum, breve, convexum, thorace non latius: antennze 
clavate, corporis dimidio paullo longiores; articulus 1"*. gracilis, 
sublinearis ; 2"*. longicyathiformis; 3". et 4°, brevissimi; 5". 
et sequentes transversi, usque ad 9¥™. Jatescentes; clava ovata, 
articulo 9°, latior et plus duplo longior: thorax ovatus, convexus: 
prothorax transversus, brevissimus: mesothoracis scutum longi- 
tudine paullo latius; parapsidum suturze conspicuz ; scutellum 
ovatum: metathorax transversus, mediocris: petiolus brevissi- 
mus: abdomen compressum, depressum, lave, subtus carinatum, 
thorace angustius non longius: oviductus exertus; vagina: ab- 
dominis dimidii longitudine: pedes simplices, subaequales: ale 
mediocres ; nervus ulnaris humerali multo brevior, radialis ulnari 
brevior, cubitalis radiali paullo brevior; stigma mediocre. 
Sp. 1. Gast. Dryas. Fem. Viridis, abdomen cupreum, an- 
tenne nigre, pedes piceo-virides, tarsi flavi, alee limpide. 
Viridis: oculi et ocelli rufi: antennz nigra; articuli 1". et 2”. 
virides: abdominis discus cupreus: oviductus vagine nigree : 
pedes virides; trochanteres lutei; genua lutea; tibiz piceze ; 
tarsi flavi, apice fusci; propedes tibiis tarsisque fulvis: ale lim- 
pide ; squamulze piceze ; nervi proalis fulvi, metalis flavi. (Corp. 
long. lin. 2; alar. lin. 14.) 
July ; South of France. 
Grnus.—PTERoMALUus, Swederus. 
Mas. — Corpus latum, nitens, scitissime squameum, parce hirtum : 
caput magnum, transversum, breve, convexum, thorace paullo 
latius: antenne filiformes, graciles, corpore breviores; articulus 
1“, linearis, gracilis; 2". cyathiformis; 3". et 4". vix conspicui; 
5™. et sequentes pubescentes, usque ad 10. curtantes; clava 
EE 
