neic genera and species of Tenthredinid(B. 145 



clypeus, labrum and mouth pale luteous. Wings deep 

 purplish-black, with a few small " bullge," i. e. transparent 

 spots. Legs densely pilose. 



Length 5 lines; alar exp, 12^ lines. 



Hah. — Ega, Brazil. 



DiELOCERA, Curtis. 



The antennce are short, 3-jointed ; the 1st joint double 

 the size of the 2nd, truncated at its apex ; the 3rd is the 

 longest, and is grooved and keeled on the underside. 

 Head narrower than the pronotum ; the frontal sutures 

 and antennal fovege deep. Wings with one marginal, and 

 four submarginal cellules, the former with a small appen- 

 dicular cellule at its apex. The first submarginal cellule 

 is small ; the second long, narrow, and a little curved ; 

 the third small, not much longer than the first ; the 

 fourth is longer and very much wider than the three 

 preceding. The second cellule receives two recurrent 

 nerviu'es. The lanceolate cellule and the posterior wings 

 are as in Hylotoma. The legs are short and thick, the 

 tibia3 have no spines, nor calcaria, and are a little longer 

 than the femora ; the tarsi are a fourth shorter than the 

 tibiae. The first tarsal joint is as long as the succeeding 

 three, which are of equal size, and have the apices trun- 

 cated ; the last is as long as the preceding two, and is 

 shaped like a closed fist, and bears on each side short 

 single claws. The patellse are hollow leaf-like conical 

 expansions. The abdomen is broad, thick and truncated. 



Dielocera sulcicoryiis, sp. n. 



?. Luteous, smooth, shining, three irregular spots on 

 the vertex, the mesonotum (except two irregular luteous 

 spots in front), metanotum, the basal third of the back 

 of the abdomen, the sides of the posterior tibire and of the 

 basal joints of the posterior tarsi, black. Wings blackish, 

 clear hyaline at the marginal cellule. The cenchri are 

 large and clear white. 



Length 5| lines; alar exp. 13 lines. 



Hab. — Prainha, Lower Amazons. November (Prof. 

 Trail). 



The above description refers only to D. sulcicornis, 

 for the typical D. Ellisii differs from it in many respects, 

 and I think that sulcicornis may well be regarded as the 



