50 EDWARD NORTON. 



yellowish on the basal disk; blackish brown at tip; venter more or 

 less yellowish white, dusky or blackish at tip ; feet and coxae whitish 

 green. 



Va): a. Feet and part of the costal rib green ; scutel and posterior 

 portion of the stethidium whitish. 



Var. h. Thorax and abdomen entirely black." 



Indiana, (Say.) New England, Maryland. 



Wings with one marginal and four submarginal cells. 



Second and third submarginal cells eaeli with a recurrent nervure. 

 11. SYZYGONIA, Klug. 

 Syzi/gonia, Klug, Jahrbucher, die Ins., 1834, 229. 



WiiKjs with one marginal and four submarginal cells, of which the 

 first and second are the smallest, and the second and third each receive 

 a recurrent nervure ; wings rounded at apex. 



Antennse. six-articulate, the sixth clavate, the third longest. 

 Legs. Anterior inner tibial spur at apex bifid ! 



a.) Antennae 5-articulate before the club, (third submarginal cell 

 not receiving the recurrent nervure.) 



1. S. cyanoptera, Klug., Monogr. 1S24, 171, 9; Perty, Siii.x. and Mart. Delect., 



Ill, l.-'.O, PI. xxvi, 4.— Brazil. 



2. S. cyanea, Klug, BruUe, Hym. iv, 671, PL 48, 2.— Brazil. 



a. S. aenea, Perty, Spix. and Mart. Delect. 1830. 130, PL xxvi, fig. 3. — BraziL 



/3.) Antennae 4-articulate before the club, (third submarginal wing 

 cell receiving one recurrent nervure. 

 4. S. cyanocephala, Klug, Monogr. 1824, 180,2; Jahrb. 229, 2, PI. 11,6,1.— 

 Brazil. 

 The figure drawn by Klug has the marginal wing cell appendiculate. 



12. PERGA, Leach. 

 Perga, Leach, Zool. Misc. Latr. Xorw. Diet., 2d ed. 



Wings with one marginal, appendiculate cell and four submarginal 

 cells ; the first and second very small, the second and third each re- 

 ceiving a recurrent nervure. 



Antennse. six-articulate, the first five short, the last long and more 

 dilated within than without. 



Inliabits New Holland. 



The following genus is thought by Brulle and Klug to belong more 

 properly to Ilylotomidiie. 



13. CEPHALOCERA, Klug. 

 Cephalocera, Klug, Jahrbuch., 1843. 2d2. 



Wings with one marginal, appendiculate, and three or four submar- 



