Sphyracepliala is compounded of the words 

 s^t/$«, malleus^ and Y^i<p»xn, caputs in allusion to 

 the form of the head. 



SPHYRACEPHALA BREVICORNIS. 



SPECIFIC CHARACTER. 



Dusky ; wings bifasciate, with brown j scutel, 

 spines, and feet yellowish. 



SYNONYM. 



Diopsis BREVICORNIS. NoUs. Joum. Jlcad, 

 Nat. Sciences, vol. i. p. 23. 



DESCRIPTION. 



Head pale rufous, vertex and each side before 

 the eyes dusky; peduncles of the eyes not 

 longer than the distance between their bases, a 

 distinct seta on the superior part of the peduncle 

 near the tip, and another each side of the vertex 

 above the antennae, rather larger than the seta 



PLATE 52. 



