274 THE CANADIAN ENTOMOLOGIST, 



line passing between the labial palpigers to the basal portion of the 

 labium. Gula luteous, clouded with darker. 



Antennje somewhat clavate, as long as head and thorax, fuscous, 

 darker before tip, sparsely covered with very short stiff black hairs ; first 

 two joints piceous, luteous at articulations ; a luteous crescent bounds 

 base of first joint in front. 



Vertex elevated behind, rounded, luteous ; in front, on depressed 

 portion, dark fuscous ; behind, on elevated portion, two dark fuscous 

 bands*, the posterior irregular and spread out each side so as to approach, 

 sometimes to meet, the anterior band. Behind this a median, oval, 

 black or rufo-piceous spot. 



Pronotum dark fuscous ; a longitudinal median luteous line and one 

 each side"!". Sides of pronotum luteous, divided by a fuscous linej. 

 Lateral carinae luteous. Below luteous, marked on each side with dark 

 fuscous. 



Mesonotum fuscous ; lobes moderately elevated ; anterior lobe with 

 a longitudinal median line and a dot or two luteous ; each lateral lobe 

 marked with two luteous lines on its inner side ; a luteous spot or two 

 also near articulation of wing ; posterior lobe with a longitudinal median 

 luteous line, sides and rear of the lobe also margined with luteous. 

 Sides and beneath fuscous, marked with luteous. 



Metanotum fuscous ; anterior lobe margined in front with luteous, 

 with a longitudinal median luteous line ; patterned similarly to meso- 

 notum, the inner luteous line of lateral lobe forming a rough triangle, the 

 apex of which is near middorsal line. Sides and beneath fuscous, 

 marked with luteous. 



Abdomen fuscous, articulations luteous ; segments luteous above, 

 especially at base, with a longitudinal median fuscous line. 



Appendages one-half the length of seventh segment, slender, arcuate 



for their posterior halves, somewhat flattened laterally ; fuscous, luteous 



near tips ; clothed with coarse black bristles ; there is the usual triangular 



fuscous plate between the appendages below ; this plate is luteous 



apically- 



*In one male specimen, collected at Dunsmuir, California, by Mr. H. F. 

 Wickham, the anterior band is very indistinctly separated from the fuscous depressed 

 portion of the vertex. 



tThis line is usually most distinct in front of the transverse furrow, where it 

 becomes a good-sized spot ; it is interrupted at the furrow and in the male specimens is 

 only faintly indicated behind it. 



:J;This line is divided into two parts in the females. 



