No. 22.] HYMENOPTERA OF CONNECTICUT. 545 



Second abdominal segment one and one-half times as long as 

 wide at apex, head very wide; antennae ii-jointed 13 



2. Pedicel large, distinctly longer and thicker than first flagellar 



joint 3 



Pedicel not longer than first flagellar joint nigriscapus 



3. Antennal scape in part pale lO 



Antennal scape entirely black 4 



4. Second and third joints of flagellum longer than thick persimilis 

 Second and third flagellar joints rounded, not longer than 



thick 5 



5. First abdominal segment striate 6 



First abdominal segment not striate 8 



6. Legs piceous or brown-black, trochanters, knees, tips of tibiae, 



and tarsi pale or yellowish 7 



Legs dark brown, tarsi whitish heliothidis 



7. Marginal vein one-third length of stigmal graptas 



Marginal vein nearly one-half length of stigmal . .spilosomatis 



8. Legs piceous or brown-black, trochanters, knees, tips of tibiae, 



and tarsi pale or yellowish 9 



Legs yellow or brownish yellow > bifidus 



9. Eyes distinctly pubescent orgyiae 



Eyes bare, or only faintly pubescent ichthyurae 



ID. Scape in part piceous or black : 11 



Scape wholly pale 12 



11. Coxae black or piceous rileyi 



Coxae pale geometras 



12. Second abdominal segment smooth arzamae 



Second segment striate at the base podisi 



13. Head two and one-half times as wide as thick dimmocki 



Head three times as wide as thick sphingis 



Males. 



1. First and second flagellar joints equal or nearly so 2r 



Second and third joints equal, longer than first 5 



Second and third joints equal, shorter than first 10 



2. Coxae black, legs partly piceous II 



Coxae pale, or dusky only at base, legs lighter 3 



3. Third flagellar joint half length of second dimmocki 



Third flagellar joint only a little shorter than second 4 



4. Legs yellow, first to third flagellar joints stout and elongate, 



joints beyond moniliform podisi 



Legs brownish yellow, first to third flagellar joints not espe- 

 cially elongate, joints beyond transverse bifidus 



5. Coxae black 6 



Coxae pale 8 



6. Pedicel shorter than first flagellar joint graptae 



Pedicel longer than first flagellar joint 7 



35 



