Vol. XXviii] ENTOMOLOGICAL NEWS. 249 



dorsum completely encircling the apex of each segment; in older speci- 

 mens 7 seems entirely black; 8 to 9 blue; 10 black, slightly or distinctly 

 paler below: Appendages black, in younger specimens the inferior di- 

 latation of the superiors and the base of the inferiors brown; the inner 

 surface of the superiors with a large shallow excavation which is densely 

 clothed with long, soft, very light dull yellow hair. Ventral suture 

 yellowish or brown, darker on 6 and 7. 



Legs dull pale yellow or light brown; posterior external face and 

 apex of femora black; tibiae with a very narrow dark line on the an- 

 terior external face, sometimes wanting. 



Wings rarely clear, usually slightly tinged with brown; stigma dark 

 brown to black, encircled or not within the enclosing veins with pale, 

 rarely covering one cell, usually slightly less, shaped as in dcmararum. 

 In a male from Cumuto, in both front wings, the anterior side of the 

 quadrangle is distinctly longer than the proximal side. 



9 — Genae pale, yellowish or bluish; labrum brown, sometimes 

 somewhat darkened over much of its area ; rhinarium and nasus dull 

 bluish; frons in front as in the paler males. Head above as in the 

 male, except that the frons anteriorly is edged with reddish brown, or, 

 in a teneral specimen, is largely this color. Rear of head as in the 

 male. 



Prothorax in pattern similar to the male; front lobe slightly duller, 

 rust red replacing black on the middle lobe, and brown replacing black 

 on the hind lobe. Hind border with the lateral wings of the male 

 greatly reduced, scarcely evident, passing directly into the high, almost 

 semicircular middle part. Propleuron cream to light bluish. 



Thorax similar to the male ; the narrow posthumeral brown stripe 

 wanting or indistinct; the mesepimeron not becoming black; the dark 

 area on the metepisternum along the second lateral suture usually dis- 

 tinct and rust red in color, sometimes very distinct and occupying 

 nearly one-half the sclerite. Beneath and coxae as in the male, but the 

 coxae never showing more than a trace of bluish. Silvery white over 

 blue areas never as conspicuous as in the male. 



Abdomen seen from above similar to the male, except that 8 to 10 

 are black, very narrowly pale at apex. Seen from the side similar to 

 tha male, but the lower pale areas on 3 to 7 wider, of uniform width, not 

 dilated subapically ; 8 to 10 similar to the preceding segments, the 

 lower pale area becoming progressively narrower posteriorly, and being 

 continuous along the sides, reaching the apex of each segment. Ven- 

 tral suture darker than in the male, largely dark brown to black on 3 

 to 6. Vulvar spine wanting. 



Legs light yellow, a narrow line on the external angle and the apex 

 of the femora, black. 



Wings very slightly tinged with brownish ; stigma light brown, pale- 

 encircled within the- enclosing veins, covering rarely one cell, usually 

 very slightly less, shaped as in the male. 



