17i;J MONOGRAPIIIA CHALCIUITUM. 



fuscus : metathorax obscure viridis : abdomen subcompressum, 

 basi obscure viride : pedes flavi ; coxae nigrse ; femora nigro- 

 fusco fasciata ; metafemora nigro-fusca, basi apiceque flava ; 

 metatibae fusco fasciatae ; tarsi apice fusci : alae hyalinse ; nervi 

 nigro-fusci ; stigma parvum. (Corp. long, i — ^ lin. ; alar. 

 4-i lin.) 



Far. /3. — Femora omnia nigro-fusca, basi apiceque flava. 



Vai\ y. — Pro- et mesotibise fulvse, basi apiceque flavae. 



June and July ; on grass beneath trees ; near London. 



Sp. 2. Gast. compressus. Mas. Obscure viridis, antennis 

 fuscis, pedihus flavis,femorihus nigrisy alls hyalinis. 



Obscure viridis, nitidus, fere glaber : caput magnum : oculi ocelli- 

 que obscure rufi : antennae fuscae ; articulus \^^. obscur^ viridis : 

 mesothoracis scutellum viridi-Eeneum : abdomen aeneum, basi 

 viride, valde compressum : pedes flavi ; coxae virides ; trochan- 

 teres fusci ; femora nigra, apice flava ; protarsi fulvi ; meso- et 

 metatarsi straminei, apice fulvi : alae hyalinse ; nervus solitus 

 fuscus, ubi costam percurrit latus ; stigma parvum. (Corp. long, 

 f — I lin. ; alar, f — 1 lin.) 



Var. /3. — Mesothoracis scutellum cupreo-senevim. 



Var. y. — Pro- et mesofemora flava, subtus per longum nigro 

 maculata. 



Var. d. — Abdomen basi cyaneo-viride. 



June ; on grass beneath trees ; near London. 



Sp. S. Gast. tenuicornis. Mas et Fem. jFjneo-viridis , an- 

 tennis fuscis, pedibus Jlavis fusco citigulatis, alis subfuscis. 



Mas. — Obscure aeneo-viridis : oculi ocellique rufi : antennae fuscae, 

 subtus flavae ; articulus l"^ nigro- viridis ; 2"^ nigro-fuscus : 

 pedes flavi ; coxae nigro-virides ; femora fusca, apice basique 

 flava ; metatibiae fuscae ; tarsi apice fusci : alae subfuscae ; nervi 

 fusci ; stigma mediocre. 



Fem. — Obscure viridis ; metathorax nitidior : abdomen obscure 

 aeneum, basi viride: antennae nigro-fuscae ; articulus 1"^ niger : 

 oviductus brevis. (Corp. long. \ lin. ; alar. 4 lin.) 



P ir. (j. — Mas, caput mesothoracisque latera viridia : pro- et meso- 

 tibias fusco-fulvae. 



May ; on grass beneath trees ; near Loudon. 



