Ii; AN'nRT!NlP-K. 



STILPNOSOMA, Siuith. 



Ilfiul as wido ns llu- tliurax, llio vertex very convex; i\xc oaUi 

 in a curve ; the „H'n(>nn mure tluin 1 wico the Icn-th of the labium ; 

 the hihium broadly obtuse at the apex ; the panujhssce rounded at ■ 

 their apex and as long as the labium ; the lahial i^alpi 4-jointed, 

 the biu>*al joint rather longer than the second, the third and fourth ^ 

 of about eqmvl length, the apical joint cylindiical, the joints short | 

 and stout : the imuvUlanj palpi (i-jointed, the tliree basal ones stout ; 

 and of nearlv the same length, the three apical ones much more ; 

 slender and clavate, the apical one pointed at the apex : the man- 

 dibles bidentatc. Thorax ovate ; the anterior ivings with one mar- 

 sinal and two submarginal cells ; the marginal as long as the two 

 submarginals : the tirst submarginal twice as long as the second, 

 which is subijuadrate, slightly widened to the apex, and receiving | 

 both the recurrent nervurcs, the first at its base, the second a little 

 before the apex. Abdomen ovate. The insect almost destitute of , 

 pubescence. | 



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In this genus the neuration of the wings is nearly that of the 

 second division of Prosopis, but the large subglobose head and the 

 form of the labium distinguish it from that genus ; the tongue in 

 the genus Lioproctus is very similar, but that genus has three sub- 

 margiual cells in the anterior wings. 



1. Stilpnosoma Isevigatum. 



Fonale. Length 5 lines. — Head and thorax bright green, the abdo- 

 men dark blue-green, highly polished, smooth, and shining. Head 

 with very line scattered punctures ; the clypeus convex ; the fla- 

 gellum fulvous beneath, the apical joint entirely so. Thorax with 

 very fine scattered punctures above, beneath more closely and 

 strongly punctured ; the legs dark obscure blue or blue-green, 

 tinted more or less vdth obscure rufo-piceous ; the legs with athin, 

 short, white pubescence, most dense on the tarsi, the apical joints 

 rufo-testaceous ; the posterior tibise serrated at their base above, 

 the calcaria pale testaceous. Abdomen impunctate above, the 

 fourth and fifth segments with a few scattered shallow punctures ; 

 beneath punctured, with the margins of the segments impunctate, 

 smooth, and shining. 



Hah. Queensland. 



