546 



except a transverse stripe caudad of each postocular spot ; compound 

 eyes dark Ijrovvn above, the lirown area inckuhng a crescent-shajjed 

 paler stripe, the eyes pale yellow below. 



Thorax blue and black, buff below; pronotum black, the narrow 

 cephalic lobe and the caudal lobe largelv l)lue, the median lobes entirely 

 black; proepimera largely blue; mesostigmal plates narrow, the lateral 

 angles and the caudal margin with a broad l)lue stripe ; black stripe 

 of the dorsal carina covering one-third to one-half of each mesosupra- 

 episternimi ; sujiraepisternal l)luc stripe somewhat irregular, not reach- 

 ing the caudal margin of the sclerite, contracted at the caudal third 

 or fourth, and occasionally interrupted, forming an exclamation point; 

 mesopleural l)lack stripe of the suture widest adjacent to the infra- 

 episternum and covering the dorsal third of that sclerite; at the caudal 

 extremity the stripe extends ventrad along the caudal margin of the 

 mesepimera to the interpleural fold ; metapleural suture with a black 

 line; remainder of the pleura, including the ventral half of the mes- 

 epimera, all of the metepisterna, and the epimera, blue ; postcoxal 

 areas pale or buff; legs striped, black and blue or buff, the coxae and 

 the trochanters mostly pale, the coxae sometimes with dark spots; 

 femora each witli a l)road dorsal strijjc from base to the apex and 

 the tibiae with a brown or black stripe occupying half the dorsum and 

 frequently including the cephalo-ventral row of setae; tarsi and claws 

 black, the claws deeply bifid at the tip ; wings with seven to nine post- 

 nodal cross-veins and with Mo arising between the fourth and fifth 

 pcstnodal veins in the front wing and between three and four in the 

 hind wing. 



Al)domen blue, buff', and black; first tergum blue, a black basal 

 spot occupying half the dorsum, and the caudo-lateral margin black; 

 second tergum blue except a subapical dorsal spot, an apical ring, 

 and a longitudinal stripe near the lateral margin, which are black; 

 segments 3—7 with longitudinal black stripes on the dorsum from 

 near the bases to the apices, the stripes widened subapically, connecting 

 with the apical rings and extending to the lateral margin of the terga; 

 entire dorsum of tergum ten and a harrow lateral marginal stripe from 

 bases to apices of terga eight and nine black or dark I)rown, the 

 whole of the dorsum of the eighth and ninth terga pale blue ; lateral 

 margins and basal rings of terga 3-6 pale yellow or blue, the lighter 

 color connecting across the dorsum on the bases of the third and 

 fourth terga and extending onto the dorsum but interrupted on tlie 

 meson in terga 5-7; anal appendages (Figs. 204, 211) black and buff', 

 the superiors black, with paler tips, and curved ventrad and caudad ; 



