

446 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



19. Submarginal vein either ornate or provided with two bristles; 

 metapleurae very small; scutel with two bristles near the 



middle .ENTEDONTID^E p. 455 



Submarginal vein with from one to five bristles; meta- 

 pleurae triangular, not small; postmarginal vein usually ab- 

 sent; scutel with four bristles, all behind the middle, often 

 with two longitudinally impressed lines; abdomen sessile 



TETRASTICHID.E p. 451 



MYMARIDyE. 

 To this family belong some of the smallest of insects. All 

 of its species, so far as known, are parasites in the eggs of other 

 insects. 



Key to Genera. 



1. Tarsi 4-jointed 2 



Tarsi 5-jointed , 3 



2. Abdomen distinctly petiolate; female with its antennal club 



not jointed, but solid; marginal vein punctiform; antennae 

 9-jointed; marginal vein in male as in female; antennae 



in male 13-jointed Polynema p. 446 



Abdomen sessile or subsessile; marginal vein lengthened; an- 

 tennae 9-jointed in female, 12-jointed in male. .Anaphes p. 447 



3. Abdomen not petiolate 4 



Abdomen petiolate; antennae 9-jointed in female, 10-jointed 



in male Camptotera p. 448 



4. Females 5 



Males 8 



5. Antennae with more than eight joints 7 



Antennae 8-jointed 6 



6. Marginal vein long Leimacis p. 448 



Marginal vein short Alaptus p. 448 



7. Antennae 9-jointed ; marginal vein long Litus 



Antennae n-jointed; marginal vein short . . . . Gonatocerus p. 449 



8. Marginal vein short 10 



Marginal vein long 9 



9. Antennae n-jointed Leimacis p. 448 



Antennae 13-jointed Litus 



10. Antennae 10-jointed Alaptus p. 448 



Antennae 13-jointed Gonatocerus p. 449 



Polynema Haliday. 

 Cosmocoma Foerster. 

 P. howardi Ashmead. Cosmocoma elegans Howard. 

 Male : length 0.9 mm. ; antennae distinctly longer than the 

 body, pedicel bulbous, much broader than the succeeding joint; 



