Occasional Papers of the Museum of Zoology 1 1 



Abdomen slender; seen from above, basal half of i brown, 

 apical half dull blue, the same color as the dorsum of the 

 thorax ; 2 black, with a median dagger-shaped pale dull blue 

 spot, the point of the dagger at the apex of the segment ; 3-6 

 black with a pale dull blue basal transverse narrow ring; 3 

 with a median longitudinal light brown or yellowish dorsal 

 stripe the entire length of the segment ; 4 has this reduced to a 

 line, often interrupted but discernible at the apex as well as 

 the base of the segment ; basal half of 7 dull leaden blue ; 

 apical half of 7 and 8-10 black. In side view i has the lower 

 half, beginning at the level of the lateral apical tubercle, pale 

 greenish blue, the same color as the metepimeron ; 2 with the 

 pale area duller and bluer, and reaching dorsad to a slightly 

 higher level than on i, with some fairly defined black areas 

 near or along the inferior border ; 3-6 with extensive pale 

 basal areas joined basally with the basal rings, occupying the 

 basal half of 3, two-fifths of 4, and third of 5 and 6; basal 

 half of 7 pale dull blue, continuous with the dorsal color but 

 apparently of a difl^erent shade; 8 and 9 with ill defined re- 

 stricted pale basal areas at the extreme lower border; 10 

 entirely black. Appendages dark brown or black basally, 

 shading out to yellowish, the acute apex of the superiors and 

 the apex of the dorsal subapical spine of each branch of the 

 inferior tipped with black. 



Stigma black, covering 4, or a little more than 4, cells ; brace 

 vein scarcely developed. Wings hyaline, venation black; an- 

 tenodals of the front wings 12-14, of the hind wings 9-1 1; 

 postnodals of the front wjngs 9, of the hind wings 8-9; 5 

 spines or small plates on the posterior border of the wing 

 basally to the anal angle, the basal one the smallest and placed 

 distal to the basal cross-vein, the apical one on the anal angle; 

 the left hind wing with a cross-vein in the supertriangle ; the 



