AMERICAN llYMENOPTERA. 241 



% . — The male has the antennae i-eddish-yellow ; a black spot on up- 

 per side of two basal joints ; apical segment of abdomen darkest ; ab- 

 domen slender, legs of one color, under-wings as in T. atroviolaccus. 



Connecticut, Pennsylvania. 



36. Tenthredo confusus, n. sp. 



Black; antennae partly red-yellow, a rufous band on abdomen. Length 

 0.2S. Br. wings 0.64 inch. 



S . — Black; body not stout; antenna? long and slender, about two- 

 thirds the length of body, setaceous, joints not enlarged at tips, third 

 and fourth joints equal, flattened; color piceous ; the four apical joints 

 whitish ; head black, nasus emarginate, piceous, labrum white, scu- 

 tel and mesothorax ferruginous, with vitta? on the side lobes; abdomen 

 rufous, the two apical segments black ; coxae, except at tips, apex of 

 hinder femora and tibia), black; tarsi white, remainder of legs ferru- 

 ginous; inner anterior spur long, of equal size throughout, obtuse, not 

 widely bifid; inner claw tooth not so large as outer; wings yellow- 

 hyaline, base of stigma white; under wings without middle cell, outer 

 cells incomplete, (as usual.) 



United States. (Smiths. Inst.) 



37. T. 14-punctatus. 



Tenthredo li-pimciaius, I^orton, Proc. Ent. Soc. Phil. I. 1862, 143, J %. 

 Greenish-white, thorax black, tergum rufous, with seven black dots on each 

 side. Length 0.34. Br. wings 0.68 inch. 



9 S . Body rather long, abdomen not flattened, antenna) long and 

 slender, whitish, the upper side black, third joint a little longer than 

 fourth; nasus not emarginate, a trilobed black spot on vertex; a spot 

 on each lobe of mesothorax and sutures of metathorax, black ; scutel 

 pale ; thorax white beneath ; abdomen tinged with rufous ; seven black 

 spots on each side of tergum ; legs pale, the upper side black, except 

 on the coxa), base of femora and an interruption near the base of tibiae ; 

 claws apparently bifid, the two teeth close together ; wings hyaline, 

 stigma and costa pale, underwings without middle cells, outer cells in- 

 complete, but the lanceolate and second brachial cells reaching the mar- 

 gin, an incomplete nervure springing from their upper tips. 

 Virginia. (Coll. Am. Ent. Soc.) 1 $ . 1 S . 



Uncertain species. 

 3S. T. nigro-fasciata, 



Tenthredo nigro-fasciata, Esch. Entomog. Berlin, 1822, 96. 64. 

 " Black ; body beneath, with spot upon the head and thorax, and the 

 scutelluni yellow; the vertex and flisciae upon the abdomen black, stig- 

 ma brown. Isle of Unataschka, Russ. Am. Length 4 lines. 



''This belongs to the division of Tenthredinidae, of which the bin- 



