ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 357 



much the longest joint ; metathoracie spiracles oblong-oval ; abdomen often very long, conically 



pointed, much longer than the head and thorax united Sympiesis Forster 



(type Eulophus sericeicornis Nees). 



Antennse 10-jointed, with one ring-joint, the flagellum not compressed, the funicle joints cylindrical ; 



metathoracie spiracles minute, rounded ; abdomen ovate or oval, depressed, not as long as the head 



and thorax united Dimmockia Ashmead,' g. nov. (type Eulophus incongruus Ashm.) 



8. Thorax not robust 9 



Thorax robust. 



Metathorax with a median carina, the spiracles small, rounded ; antennae 9-jointed, with one ring- 

 joint, the funicle 3-jointed, the club 3-jointed, abdomen oval or subrotund, depressed, usually 

 shorter than the thorax Cratotrechus Thomson (type Ichneumon larvarum L.). 



9. Wings hyaline, the flagellum not compressed 10 



Wings dusky, the flagellum compressed, the funicle very short ; metanotum.with a median carina. 



Microplectron Thomson (type Entedon fascipennis Zeterstd.). 



10. Antennae 9-jointed (scape pedicel, one ring-joint, 3-jointed funicle and a 3-jointed club). 



Funicle black ; metanotum with a distinct median carina, the lateral folds usually present. 



Eulophus GeofFroy (type Ichneumon pectinicornis L.). 

 Funicle white ; metanotum with a delicate median cai-ina, the lateral folds always absent. 



Microlycus Thomson (type M. heterocerus Thoms.). 



11. Scutellum with dorsal grooved lines 12 



Scutellum withoxit dorsal grooved lines 13 



12. Thorax not long, the pronotum anteriorly rounded ; .antennse inserted below the middle of the face, the 



flagellum without branches, filiform. 



Stigmal vein not more than half the length of the marginal vein ; antennae 8-joiuted. 



Diaulus Ashmead. 

 Stigmal vein longer, at least two thirds the length of the marginal vein ; antennae 9-jointed. 



Diaulomorpha Ashmead. 



13. Thorax not long, the pronotum of normal length 14 



Thorax long, the pronotum long, conical and much narrower than the mesonotum ; antennae 10-jointed, 



with one ring-joint Notanisomorpha Ashmead. 



14. Marginal vein very long, three or more times longer than the stigmal vein 15 



Marginal vein shorter, not thrice as long as the stigmal vein 16 



15. Antennae 10-jointed, with one ring-joint. 



Flagellum compressed or subcompressed ; metathoracie spiracles oval or subovate ; abdomen long. 



Sympiesis Forster. 

 Flagellum filiform, cylindrical ; metathoracie spiracles small, round ; abdomen oval. 



Dimmockia Ashmead. 



16. Thorax not robust 17 



Thorax robust. 



Metanotum with a median carina and lateral folds ; antennae 9-jointed with 3 long branches. 



Cratotrechus Thomson. 



17. Wings clear hyaline ; flagellum not compressed 18 



Wings dusky ; flagellum compressed ; funicle with 3 short branches Microplectron Dalman. 



18. Funicle with 3 long branches Eulophus Geoflfroy. 



Funicle with 3 short branches. Microlycus Thomson. 



^ Named in honor of Dr. Geo. Dimmock. 



