548 • 



the compound eyes and above the clypeus, pale blue ; remainder of the 

 front, and the vertex, black ; postocular spots and the postgenae and 

 occiput yellow. 



Thorax blue and black ; pronotum largely black, the cephalic lobe 

 blue; large spots on each mesal lobe and a smaller one on each, near 

 the meson, blue, and a blue triangular mesal spot on the caudal lobe; 

 proepimera largely blue, the dorsal sutures indistinct and covered with 

 black ; mesostigmal plates elongate, the lateral angles covered by a 

 blue spot; dorsal carina with a broad, black stripe, which covers also 

 about one-half of the mesosupraepisterna on each side ; the dorsal stripe 

 is followed on each supraepisternum by a narrower blue stripe extend- 

 ing from the cephalic margin caudad to near the paraptera, the stripe 

 being narrowed at both ends ; the black stripe of the mesopleural 

 suture is broad, extends ventrad well onto the metepimera, and in 

 younger specimens is divided by a brown line which is directly over 

 the suture ; dorsal third of the mesinfraepisterna, and spots on the 

 metapleural sutures near the wing bases, dark brown or black; re- 

 mainder of the pleura blue, postcoxal areas brownish or buff; legs 

 pale blue, or brown and black, the coxae and trochanters pale, the 

 femora each with a faint dorsal carina on one side of which is an indefi- 

 nite line and on the other a row of spots, the hind femora, however, 

 often entirely pale ; tarsi and claws pale, dark at the tips ; wings with ten 

 to eleven postnodal cross-veins and IV'L, arising between the fourth and 

 fifth postnodal cross-veins in the front wings and between three and 

 four in the hind wing. 



Abdomen blue and black, the dorsum of terga 1-9 and ten with 

 longitudinal black stripes from base to apex, widened subapically on 

 segments 2-7 and narrowed to the meson on the apex of the eighth 

 tergum; lateral surfaces of terga 1-8 and ten, all of nine, narrow 

 apical ring on one, narrow basal ring on three, and a broad basal 

 ring on four, five, and six, blue or pale; anal appendages (Figs. 203, 

 210) black, the superiors bifurcate, the dorsal arms shortest and with 

 minute points directed mesad ; inferiors paler and shorter than the 

 superiors. , 



Female. — Color, pale green (pale viridine green), black, and 

 brown, tip of the abdomen blue. 



Head similar to that of the male except that the postocular spots 

 are connected with the narrow stripe caudad of the ocelli, and the 

 genae and stripe above the clypeus are usually more or less orange in 

 color. 



