SYNONYM. 



SiREx CoLTJMBA. Fdbr, Sijst. Piez. p. 49. 



Jimoen. Acad. vol. vi. p. 412. (Fabr.) 

 SiREx Pennsylvanica. Degeer. Ins. vol. iii. 



p. 393. pt. 1. pi. 30. fig. 13. (Fabr.) 



DESCRIPTION. 



Head ferruginous: vertex a little grooved, a 

 blackish line through the stemmata passes upon 

 the posterior orbits : antennse black, four basal 

 joints pale ferruginous, tv\^o terminal joints ful- 

 vous : thorax ferruginous, sutures blackish : wings 

 blackish : carpus ferruginous : tergum deep black ; 

 first segment w^ith a small obsolete spot each 

 side, yellow ; second segment yellow, with an in- 

 conspicuous longitudinal black line; remaining 

 segments with an oblong-triangular yellow spot 

 on the base of each ; terminal spine, and valves 

 of the oviduct, ferruginous : pectus black, a large 

 ferruginous spot beneath the anterior wings : feet 

 pale ferruginous ; thighs above, and posterior pair 

 entirely, black : venter, with the segments slightly 

 tinged with piceous. 



PLATE XXXII. Q 



