No. 22.] HYMENOPTERA OF CONNECTICUT. 8l 



10. Hind coxae elongated so that apex of hind femora reaches 

 to or beyond apex of abdomen; middle coxae much smaller 

 than hind coxae, reaching to or slightly beyond proximal 



end of hind coxae Macrophya p. 92 



Hind coxae not elongated, apex of hind femora not reaching 

 to apex of abdomen; middle coxae subequal in size to hind 

 coxae, reaching to and usually beyond middle of hind 

 coxae AUantus p. loi 



Pachyprotasis Hartig. 



P. rapae (Linnaeus). Pachyprotasis omega Norton. Synair- 

 ema americana Provancher. 



Female : body black, with clypeus, labruni, mandibles, postgenae, 

 inner and posterior orbits, antennae at base beneath, V-shaped spot 

 on mesonotun, tegulse, scutellum, postscutellum, plurae, spot at 

 base of hind wings, coxae, trochanters, front and middle femora 

 and tibiae and tarsi beneath, basal half of posterior femora, poste- 

 rior tibiae beneath, and lateral margin of abdomen, white. Male 

 differs in having the white more extended. Length 6-7 mm. 



Connecticut (E. N.). 



Lagium Konow. 



Key to Species. 



1. Head above lateral ocelli impunctate, strongly punctate 



below; median femoral pocket smooth, polished, impunc- 

 tate; body black, with apices of front femora and their 

 tibiae and tarsi beneath yellowish; second and third abdom- 

 inal segments above rufous; wings strongly infuscated. 



Length 13 mm cinctulum 



Head above and below lateral ocelli strongly punctate; me- 

 dian femoral pocket finely longitudinally rugose 2 



2. Abdomen wholly black; body black, with apex of anterior 



femora, their tibiae and tarsi beneath, yellow; a spot on the 

 posterior coxae white, sometimes wanting in males; wings 



strongly infuscated. Length 13 mm atroviolaceum 



Abdomen wholly rufous beyond the basal plates, except the 

 saw-guides atroviolaceum var. tardum 



L. cinctulum (Norton). Tenthredo atroviolacea var. ciiictula 

 Norton. New Haven, 13 July, 1904 (P. L. B.) ; Scotland, 25 

 July, 1904 (B. H. W.) ; Lyme, 5 August, 191 1 (A. B. C). 



L, atroviolaceum (Norton). Tenthredo atroviolacea Norton. 

 Tenthredopsis atroviolacea Norton. 



Connecticut (E. N.). 



