40 University of Michigan 



part of vertex brilliant reddish orange; rear part of vertex 

 black; the transverse line between orange and black at ap- 

 proximately the level of the posterior edge of the median 

 ocellus, which is nearly surrounded by black; an anterior spur 

 of black on either side toward the antenna, rarely wanting; 

 the area posterior to the frons and between the antennae 

 brilliantly metallic with a fine granular surface; the area is 

 divided into two by a narrow non-metallic bar from the median 

 ocellus to the frons; rarely the black is reduced in front by 

 withdrawal along the anterior line between the median ocellus 

 and the lateral ocelli and on the outer side of each lateral 

 ocellus. Antenna with the first two joints and the base or 

 more of the third yellow, the remainder brown. Profile as 

 figured, figure 63. 



Front lobe of prothorax black, posterior lateral margins 

 yellow; the black posteriorly V-shaped, the apex reaching the 

 black of the posterior lobe; remainder of middle lobe yellow, 

 with a more or less developed brown or black area on each 

 side ; posterior lobe black, a more or less distinct posterior pale 

 area on either side. Propleuron yellow, black edged below in 

 front. 



Thorax rich black above, sides yellow, a narrow orange line 

 on either side of the middorsal carina, disappearing below and 

 joined above with a wider humeral stripe which ends on the 

 mesinfraepisternum but does not cross it; the humeral stripe 

 is posthumeral above and antehumeral below; mesepimeron 

 with a wide black bar, parallel to the yellow humeral stripe 

 and hence occupying the posterior part of the sclerite above 

 and the anterior part below-; near its upper end this black 

 area is more or less distinctly joined with the dorsal black, thus 

 dividing the humeral pale stripe which is joined above and be- 

 hind with the pale area of the metathorax; below the mes- 



