Occasional Papers of the Miiscimi of Zoology 41 



epimeral black extends across the mesinfraepisternum, the 

 posterior lower portion of which is yellow, and joins the black 

 area of the mesepisternum ; metepisternum with a black bar, 

 wider above, not reaching the wing base, tapering and ending 

 below at or near the stigma ; metepimeron broadly livid along 

 its anterior suture; some small black spots and lines at wing 

 bases. In darker, and presumably older individuals, the dorsal 

 and humeral pale stripes darken and, in extreme cases, en- 

 tirely disappear; the dorsal stripes go first, and they may 

 be scarcely discernible, except at the extreme upper end, in 

 individuals in which the humeral stripes remain bright yellow. 

 Beneath and coxae yellow, the latter more or less darkened in 

 front. 



Abdomen above reddish orange and black; i yellow with 

 a median black or brown spot, more or less divided in the 

 median line; 2 black or brown, paler apically with a long- 

 itudinal median yellow stripe ; 3-6 with a narrow basal pale 

 ring, followed by a brown or black area shading out into pale, 

 followed by a narrow apical black ring; 3 with a median 

 longitudinal pale line, continuous with the basal ring and 

 disappearing posteriorly in the subapical pale area ; 7-9 red- 

 dish brown, 7 the darkest and dullest; 10 black without definite 

 pattern. Seen from the side, i yellow, lower posterior border 

 black ; 2 black or dark brown above, shading out below into 

 brown, wider basally, which shades out leaving about the 

 lower half or more yellow, the extreme lower border and apex 

 black; 3-6 similar to dorsal view, the subbasal brown on 3 

 paler than on 4-6, not reaching the lower border; on 4-6 the 

 pale basal ring is lengthened or expanded below thus short- 

 ening the subbasal dark area ; this dark area suffers a greater 

 reduction posteriorly by the lengthening of the subapical pale 

 area which is shortest on the middorsum and longest in the 



