34 PROCEEDINGS OF THE NATIONAL MUSEUM vol.79 



sometimes covering the whole vertex, rarely extending over the 

 superior half of the occiput ; when black, vertex with at least a band 

 along the eye and another oblique from the latter toward top of 

 antennal scrobe, yellowish like most of head ; front, cheeks, and back 

 of head below at times lightly inf uscate ; scape dull yellow to lemon 

 yellow, pedicel pale ochreous-yellow, sometimes brown to black above 

 funicle and club unicolorous, pale, honey yellow, light brown or 

 rufous, pronotum uniformly ochreous-yellow or with posterior 

 margin black, or dorsal area with a subquadrate or otherwise shaped 

 black patch sometimes covering as much as middle half or even with 

 only the sides not black ; ground color of mesonotum ochreous-yellow 

 but more or less heavily infuscated, sometimes black, with lower part 

 of scapulae, almost all the axillae, lower edges of scutel, and sutures 

 yellow or rufous, mesopleura usually not marked with black, meta- 

 pleura sometimes entirely or not at all black; propodeum ochreous- 

 yellow, or groove and anterior median surfaces black; coxae and 

 trochanters usually plain yellow, hind coxae at times with one or two 

 rather faint longitudinal black bands behind, otherwise unmarked, 

 femora and tibiae colored like coxae but superior face of femora 

 black, front femur least so, black area increasing on middle and hind 

 femora, outer face of femur almost always mostly ochreous-yellow, 

 front tibiae lightly infuscate or immaculate, middle tibiae moderately 

 fuscous but still only on outer face, hind tibiae entirely brownish 

 black, except base and apex, tarsi whitish yellow; stigma dark 

 brown or black, the submarginal band " bottle-shaped," somewhat 

 lighter brown than stigma, rarely reduced in size or deviating from 

 the form here described, in extreme reduction about one-half as wide 

 as long, reaching two-thirds across the wing, usually about two-thirds 

 as broad as long, in one specimen only one-ninth longer than broad, 

 proximal edge almost continuous with base of stigma and irregularly 

 straight, apex fairly straight and forming a right angle with the 

 proximal edge, distal margin broadly rounded and its farthest point 

 usually extending beyond end of stigmal vein; secondary band very 

 faint; abdomen mostly dark, basal third often honey yellow to 

 rufous, shading caudad into reddish brown or brown and black, 

 sheaths honey yellow to light brown. 



Head from above almost two-thirds as long as broad, vertex, front, 

 and eyes broadly rounded, or eyes not sharply set apart from their 

 surroundings, temples prominent, rounded, or head, except the 

 moderately concave occiput, almost ovate in transverse outline ; face, 

 including genae, reticulate, and with small circular depressions, malar 

 space narrowly smooth and finely wrinkled, groove narrow and in- 

 complete, broader at eyes, face sparsely and inconspicuously hairy; 

 antennae rather densely hairy and broadening gradually and slightly 

 from Fl to middle of club, as a whole relatively stout, scape (not 



