372 Annals Entomological Society of America [Vol. XV, 



below. On each side of the antennal process, with their bases against 

 the eyes, are two triangular areas with microscopic, almost white 

 pubescence. 



Thorax a faintly shining black with five, dorsal, narrow, obscure 

 metallic golden green stripes, merging into similarly colored area both 

 at the anterior end and just before the scutellum, which gives to the 

 black of the thorax a greenish cast. Scutellum shining; entirely metallic 

 greenish black. Pile of medium length, rather thick and yellowish. 

 Humeri opaque yellow, yellow pilose. Mesopleuras black, with an oval 

 yellow spot, yellow pilose. Squamae yellow. 



First segment of abdomen black, feebly shining. Second, third and 

 fourth segments black, nearly opaque, each with a pair of opaque 

 yellow spots and a shining, metallic, brassy band on posterior margin. 

 Dorsum of abdomen short yellow pilose throughout. The posterior 

 band of second segment is uniform in width, does not quite reach the 

 lateral margin but turns up along the sides and reaches the anterior 

 margin of the segment. The metallic part of the third segment is sim- 

 ilar except that the posterior band is much wider in the middle and 

 narrower on the sides. On the fourth it covers practically the whole of 

 the segment and the black is limited on the posterior side to a narrow 

 band encircling the spots.' Fifth segment wholly shining metallic. 

 Hypopygium feebly shining brownish or reddish. The spots of the 

 abdomen are well separated, do not reach the lateral margin and are 

 much smaller and more transverse than those of Soniula decora. Those 

 of the second segment are oblong and slightly narrowed on the inner 

 end, and not quite twice as long as wide. Those of the third segment 

 are not pyriform but are oblong, nearly three times as long as wide, 

 slightly concave on the anterior and convex on the posterior side. The 

 spots of the fourth segment are similar but somewhat smaller and a 

 little more concave. A small yellow oblique triangle has its base on the 

 anterior margin, touching lateral margin of the second segment, and a 

 much smaller but similar pair of spots on the third segment. Venter 

 shining black with yellow posterior margins to the segments, those of 

 the first and fourth being widest. Legs light brownish yellow and 

 covered with thick yellow pile. Hind femora along the inside with a 

 number of short black bristles like hairs. 



Last three joints of all the tarsi blackened; with blackish pile. 

 Wings dark brown before the fourth longitudinal vein, becoming 

 yellow near the base, hyaline posteriorly. 



Female: Very similar to the male. The posterior metallic band of 

 the second segment is nearly wanting, the yellow triangles in the 

 anterior corners of the second are smaller, those of the third segment 

 obsolete. The hind femora lack the black bristle like hairs on the inside. 

 The black facial stripe extends narrowly to the tip of the antennal 

 process; in one male paratype this is also true. 



Length, including the antennal process: 17 mm. 



