18 PROCEEDINGS OF THE NATIONAL- MUSEUM vol. 70 



genae, and occiput not or only slierhtly pubescent, but with numer- 

 ous erect golden hairs, somewhat punctate. 



Thorax: Surface of prothorax punctate, covered with long, erect, 

 golden hairs; dorsal surface almost completely covered with a yel- 

 low spot, which usually extends downward on each side nearly to the 

 coxa. Mesonotum black, hairy, densely punctate, minutely striate ; 

 scutelium with a large transverse yellow spot, longitudinally striate : 

 iegulae yellow; an area just below the tegulae yellow; rest of 

 mesopleural region black ; whole mesopleural and mesosternal region 

 hairy, punctate, sometimes minutely striate. Metathorax black ex- 

 cept the metanotum, which has a transverse yellow spot; upper and 

 anterior portion of metapleural region almost entirely smooth and 

 without hairs; posterior portion of metathorax not very definitely 

 marked off above from the propodeum. 



Propodeum: Black, with three yellow spots — one on each side at 

 the anterior end, each of these extending posteriorly and downwards 

 to a point ; and one at the end of the propodeum extending forwards 

 on the dorsum, leaving a central black band, which in front widens to 

 the full width of the dorsum; surface of propodeum punctate and 

 finely striate. 



Abdomen : Petiole smooth, nonpunctate or nearly so ; minutely 

 sericeous ; black dorsally and yellow ventrally, the limits of the two 

 colors varying greatly; main portion of abdomen ovate, pointed at 

 end ; first segment yellow, with a fuscous stain above petiole ; rest of 

 segments fuscous to black, posterior margins yellow ; surface smooth, 

 no more than slightly sericeous except the last dorsal and ventral 

 segments, which are sparsely hairy and punctate. 



Legs: Anterior four: Coxae black; trochanters black with a yellow 

 apical rim on outside; femora black basally, the remainder yellow; 

 tibiae yellow; tarsi yellow at base, the outer segments becoming 

 fuscous. Hind legs : Coxae black ; trochanters yellow with a fuscous 

 apical rim; femora yellow basally, the remainder black; tibiae 

 yellow basally, black distally ; tarsi yellow and fuscous, first segment 

 usually fuscous at base and apex, the others yellow at base and 

 fuscous at apex, outer segments becoming entirely fuscous. Coxae 

 and trochanters of all legs very sparsely hairy; entire surface of 

 legs more or less sericeous ; tarsal claws fuscous, with a minute tooth 

 near middle on the inner surface ; spines on legs varying from yellow 

 to fuscous. 



Wings : Transparent, with a yellowish to ferruginous tinge ; outer 

 margins slightly infuscated; wings sometimes with an extremely 

 slight violet or purple reflection. 



Male. — Differs from female as follows : Slightly smaller ; abdomen 

 shorter and less acute ; teeth of clypeus more pointed than in female ; 



