276 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



extending forward from the anterior ocellus. The ocellar area and 

 the area between the ocelli and the vertico-occipital suture black. 

 Suture between either end of tlie occiput and its postocular area 

 black. From each anterior angle of the occiput a black line extend- 

 ing forward to its corresponding antenna, and a narrow line extending 

 laterally to its corresponding eye. Postocular areas edged pos- 

 teriorly with black. Labrum, clypeus, frons, and occiput covered 

 with long white pile, which is longest on frons. Eyes very dark violet 

 above, almost black, shading into grayish violet below. Under sur- 

 faces of head pale violet, covered with scattering white pile. 



Prothorax violet above. Sides and coxae brownish with a heavy 

 coating of pruinose. The tergo-pleural sutures black; a broad black 

 line at the base of the posterior lobe comiecting the posterior ends of 

 the tergo-pleural lines; a black line along base of anterior lobe con- 

 necting the anterior ends of the tergo-pleural lines. Anterior edge of 

 anterior lobe black. A narrow longitudinal middorsal violet stripe 

 bounded on each side by a black stripe. Posterior lobe not marked. 



Mesothorax and metathorax with dorsal surfaces violet, shading 

 into brownish on lower-lateral and ventral surfaces; the brownish 

 areas heavily pruinose. Middorsal carina narrowly black, one-fourth 

 wddth of either antelmmeral pale streak, the black extending 

 around the edges of the antealar sinuses. Dorsal third of mesinfra- 

 episternum black. Humeral suture black, as follows: A rectangular 

 black spot below its anterior end, from which a broad line extends 

 dorsad to its middle point, wiiere it tapers to one-third its previous 

 width, extending thus narrowed to the dorsal fourth, where it abruptly 

 widens for the remainder of the suture. Dorso-posterior edge of 

 mesepimeron and upper third of first lateral suture black. Dorso- 

 posterior edge of metepisternum and second lateral suture black. 

 Femora pale brown with a heavy external and a heavy anterior black 

 stripe, between which lies a high brown keel. Tibiae mth an antero- 

 interior black stripe. Spines black. Tarsi dark brown. Wings 

 hyaline, stigma dark brown. 



Abdomen with segments 1-7 violet with black sterna; segments 

 8, 9, and 10 blue with black sterna, and abdominal appendages black. 

 (See figs. 27 and 28.) 



Segment 1 with sides and sternum brown overlaid with piniinose. 



Segment 2 with a lateral round-lobed, inverted T-spot on the pos- 

 terior half, followed by a narrow band encircling posterior end. 



Segment 3 with a narrow line along ventral edge of pleurite. A 

 narrow band around posterior end, just in front of which is a second 

 broader band encircling the segment, but rumiing obliquely down and 

 forward. 



Segment 4 marked similarly to segment 3, but with the broad 

 oblique band occupying the posterior fourth of the segment. 



