100 Annals of the Carnegie Museum. 



carina, and a pair of small round metasternal spots near the hind end 

 of the mid-ventral groove. 



Dorsum of abdominal segments 2-4 dark metallic-green, of 5-10 

 blackish-brown, 9 pruinose ; most of 1 (except a basal dorsal metallic- 

 green spot), sides of 2-7 inferiorly, a narrow transverse basal ring on 

 3-6, and a fine mid-dorsal longitudinal line on 2-4, pale blue. 



Superior abdominal appendages longer than 10, not as long as 9, 

 curved toward each other in their apical halves, black. In dorsal 

 view the inner margin bears an acute tooth, directed caudad, at one- 

 fourth length, followed by a distinct interval, beyond which the inner 

 margin again enlarges into a lamina with a straight minutely denticu- 

 lated edge terminating without any distinct tooth where the appendage 

 contracts to its narrower terminal two-fifths, apex truncated and 

 rounded. In profile view the appendage is nearly straight in its 

 proximal two-thirds, curved downward in its distal third. 



Inferior appendages paler brown ; in dorsal or ventral view barely 

 reaching to the hind end of the lamina of the superiors ; abruptly nar- 

 rowed on the inner (mesial) side of each ; distal half half as wide as 

 the proximal half, of uniform width, moderately hairy. In profile 

 view the inferiors taper less rapidly than in some of the other species 

 here described, so that the contrast between proximal and distal halves 

 is less marked. 



Legs pale yellowish, femora with two superior and inferior longi- 

 tudinal dark lines, tibiae inferiorly and tarsi black. 



Wings almost clear, stigma surmounting two cells or less, with a paler 

 line just inside the margins (except the posterior), proximal and distal 

 edges almost parallel, 10-11 postnodals on the front wing, 9 on the 

 hind. Dimensions of the type: abdomen 28.5; hind wing 18; 

 costal edge of stigma, front wing, 1 mm. 



Variations. — A Cuyaba male lacks the pale blue spots near the 

 lateral ocelli, frons and nasus darker, some metallic-green reflection on 

 the top of the head ; rear of the head, much of the prothorax, and of 

 the under parts of the thorax pruinose. 



In all of the three specimens other than the type, the metallic-green 

 mesepisternal stripe, instead of contracting into a line just above its 

 middle, remains nearly as wide as in its lower half, but widens at its 

 upper end to the dimension above given • it remains at the same distance 

 from the mid-dorsal carina, but tends to become margined with black 

 in the oldest male at hand (that from Cuyaba the head of which is de- 



