94 THE CANADIAN ENTOMOLOGIST. 



Vertex elevated behind, rounded, luteous ; post-antennal area fus- 

 cous ; two transverse fuscous bands on elevated portion ; these bands 

 merge into one along the middle third*; a short fuscous prolongation 

 posteriorly along the longitudinal median furrow. 



Pronotum as broad as long, narrowed anteriorly, sparsely clothed 

 with rather long white hairs, more thickly so on margins ; sides sinuate, 

 front emarginate ; anterior angles rounded ; luteous, a longitudinal fuscous 

 band each side of middle line; these. bands are approximate or coales- 

 cent behind the transverse furrow, more widely separated before it ; 

 another longitudinal fuscous band on the outer side of each middle one, 

 behind the transverse furrow. Lateral carinae luteous. Beneath luteous, 

 a longitudinal fuscous streak on each side near carina. 



Mesothorax sparsely clothed with white hairs ; lobes of dorsum 

 strongly elevated ; anterior lobe fuscous, a spot each side, and one at 

 posterior margin medially, luteous ; lateral lobes fuscous, a few luteous 

 spots near the articulation of wings ; on each of these lateral lobes a 

 luteous triangle whose apex terminates near the mid-dorsal line; posterior 

 lobe luteous, a longitudinal median fuscous streak which is wider 

 anteriorly ; posterior angles luteous, each with a U-shaped fuscous streak. 

 Below mostly fuscous, at base of wings and legs luteous. 



Metathorax sparsely clothed with white hairs ; dorsum with lobes 

 less elevated than those of mesothorax ; anterior lobe luteous, with a 

 U- or V-shaped fuscous marking ; lateral lobes each with a luteous 

 triangle similar to those on corresponding lobes of mesonotum ; base of 

 wings above fuscous ; posterior lobe similar to that of mesonotum. Sides 

 and below mostly fuscous ; bases of legs and wings, and a few spots, 

 fuscous. 



Abdomen longer than wings, slender, thickly clothed with white 

 hairs, a few black ones apically, fuscous, the basal segments above 

 luteous with a median black line. 



Appendages short, half as broad as long, one-fourth the length of 

 last segment, cylindrical, obtuse on tip, luteous ; clothed with long black 

 hairs or bristles ; between the appendages below, a short triangular 

 luteous plate. 



*In one specimen, a co-type, collected in Los Angeles County, California, by Mr. 

 Albert Koebele, the bands are interrupted at the longitudinal median furrow ; in 

 another co-type, collected July 5, 1897, at San Simon, Arizona, by Mr. H. G. Hub- 

 bard, these bands are almost enterely merged into one. 



