No. 22.] HYMENOPTERA OF CONNECTICUT. 557 



Has been bred from the eggs of the Carolina locust (Dissos- 

 teira Carolina). 



Waterbury, 10 July, 1879 (W. H. P.). 



S. calopteni Riley. 



Black, rugose, the mesonotum with faint but distinct furrows. 

 Antennae brown-black, the scape and pedicel yellow. Tegulse 

 pale rufous. Legs, including coxae, pale brownish yellow. 

 Length 3-3.4 mm. 



Parasitic on the eggs of (Caloptenus) Melanoplus atlanis. 



S. luggeri Riley. 



Black, rugose, differs from the preceding only in the presence 

 of a short stigmal vein and the entirely brown-black antennae. 



Parasitic on the eggs of Caloptenus sp. 



CERAPHRONID^. 

 Key to Genera. 



1. Marginal vein stigmated, antennae ii-jointed in both sexes 2 

 Marginal vein not stigmated, male antennae with one more 



joint than in female 9 



2. Males . ., 6 



Females 3 



3. Metathorax not spined at base 4 



Metathorax with a forked spine at base Megaspilus p. 558 



4. Thorax much narrowed; completely apterous 



Eumegaspilus p. 559 

 Thorax as usual 5 



5. Mesonotum narrowed anteriorly, eyes pubescent 



Conostigmus p. 558 



Mesonotum not narrowed in front, eyes usually bare 



Lygocems p. 558 



6. Metathorax with a forked spine at base.. Megaspilus p. 558 



Metathorax not thus armed 7 



7. Apterous Eumega^ilus p. 559 



Fully winged 8 



8. Antennae dentate or ramose Lygocerus p. 558 



Antennae filiform, not dentate Conostigmus p. 558 



9. Males II 



Females 10 



10. Scutellum flat or subconvex, with a frenum Ceraphron p. 559 



Scutellum convex, without a frenum Aphanogmus p. 560 



11. Scutellum depressed or flat, with a frenum; antennae simple, 



not serrate Ceraphron p. 559 



Scutellum convex, acuminate, without a frenum; antennae 

 serrate Aphanogmus p. 560 



