No. 22.] HYMENOPTERA OF CONNECTICUT. " 83 



apex, and abdominal segments two to four, rufous. Male differs 

 in having more black on the posterior legs. Length 6-8 mm. 



Leucopelmonus MacGillivray. 

 °L. annulatus MacGillivray. 



Female : body black, with the labrum, antennal segments five 

 and six, the tegulae, the apices of the coxae, the trochanters, the 

 middle and posterior tarsi, and the stigma at base, white ; antennae 

 at base, the clypeus, mandibles, spot on supraclypeal area, pro- 

 thorax, mesonotum except spots on lateral lobes, scutellum, post- 

 scutellum, legs beyond the trochanters except parts named, meso- 

 pleurae and metapleurse in great part sometimes, and abdomen, 

 rufous. Male differs in having the entire antennae and only 

 abdominal segments one to five rufous, the posterior femora and 

 tibiae black at apex. Length 7-10 mm. 



Rhogogastera Konow. 

 °R. evansii (Harrington). Tenthredopsis evansii Harrington. 

 Body greenish-yellow, with the antennae above, a spot on the 

 vertex, the greater part of the mesonotum, the metanotum, the 

 apex of the scutellum, a broad band along the middle of the ter- 

 gum, the apices of the tibiae, and the apex of each tarsal segment, 

 black; wings hyaline; the head smooth, impunctate. Length 12 

 mm. 



Tenthredo Linnaeus. 

 Key to Species. 



1. Antennae wholly or in part pale 2 



Antennae wholly black 20 



2. Antennae wholly pale 3 



Antennae in part black 8 



3. Abdomen wholly black beyond basal plates 4 



Abdomen wholly or in part rufous 6 



4. Femora rufous 48 



Femora for the most part black 5 



5. Head uniformly finely punctate; body black, with clypeus, la- 



brum, mandibles at base, scutellum, legs beyond coxae except 

 posterior femora, and basal plates in part, yellow; antennas, 

 posterior orbits, tegulae, wings in great part, and anterior and 



middle femora, somewhat rufous. Length 11 mm femaldi 



Head impunctate, but finely, indefinitely wrinkled; body 

 black, with antennae, clypeus in part, front femora before, 



