48 University of Michigan 



treme lateral margins of the hind lobe dusky. Propleuron 

 bright yellow. 



Thorax above similar to ictericum, but brighter, clearer yel- 

 low, the two pale stripes, the one adjoining the middorsal 

 black and the antehumeral, equally bright; the dark area is 

 darker above, the inner and outer borders equally dark (thus 

 differing from ictericum), and shading out below, especially 

 on the outer border, leaving the outer half or more of the 

 sclerite below yellow; doubtless when more specimens are 

 known this dark area will be found to be variable in extent; 

 sides bright yellow; mesepimeron dusky, especially along the 

 humeral suture and below, indefinite and obscure but carried 

 across the mesinf raepisternum as a brown line ; metepisternum 

 with a narrow stippled line from near the top to the stigma ; 

 a small dusky stippled area above on the metepimeron. Be- 

 neath and coxae yellow. 



Seen from above abdominal segment i is largely yellow, 

 dusky at the base in the median line ; 2 brown above with a 

 longitudinal median yellow line, which does not reach the ex- 

 treme base or apex ; 3-6 brown above, apex broadly black, a 

 narrow yellow basal ring from which a narrow longitudinal 

 middorsal yellow line runs posteriorly to, but not across, the 

 black apex; this longitudinal yellow line Avidest on the anter- 

 ior segments; the brown, adjoining the basal yellow ring, 

 grows progressively darker posteriorly, so on 6 the re- 

 maining brown, adjoining the apical black, appears as a rela- 

 tively light colored area ; 7 brown, a basal yellow ring, the 

 extreme apex very narrowly black; 8 similar but paler, the 

 subbasal brown shading out at once posteriorly into dull 

 orange ; 9 similar to 8 but darker, a narrow median longitu- 

 dinal yellow line from the base for about three-fourths the 

 length of the segment, the narrow apical black of 8 wanting; 



