402 HYMENOPTEEA. 



thorax united. Legs rather long, the hind tibiae more or less brown in front ; covered 

 with scattered whitish hair. Wings rather long ; the middle fascia on the fore pair 

 extending from the commencement of the transverse basal nervure to the base of the 

 stigma and of nearly equal width ; the apical cloud commencing at the end of the 

 stigma ; the areolet on the lower side as long as wide, the nervures not meeting at the 

 top ; the hind wings faintly clouded towards the apex. 



V 2. Microdus pulchripennis. 



Luteus, antennis, capite, mesonoto, abdominis segmentis 4°-8 ra , coxis, basi femorum, apiee tibiarum late 



tarsisque posticis nigris ; alis flavo-hyalinis, fusco-violaceo bifasciatis, stigmate iiigro cum apice flavo. 

 Long. 11 millim. 



Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 



Antenna? densely pilose, a little longer than the body, the tips involute ; the underside 

 of the flagellum inclining to fuscous, the apex of the scape testaceous. Face rather 

 strongly punctured, black only at the top ; the fovese above the clypeus rather long, 

 deep ; frontal depressions deep, triangular above ; the bordering keel acute, projecting. 

 Thorax shining; the mesonotum with a few scattered punctures, the middle lobe 

 depressed in the centre, the sides of the depression forming a keel. Metanotum with 

 two broad, deep, basal and five central arese (the outermost of these the largest, the 

 central arese of equal width, acutely pointed at the base, and transverse at the apex), and 

 five apical arese (the central of these small, A-shaped, the lateral ones longer than broad, 

 the innermost being the larger) ; the arese all very smooth and shining. Abdomen a little 

 longer than the head and thorax united. Wings : the lateral cloud extending from near 

 the termination of the transverse basal nervure to the areolet ; the apical cloud broader 

 and commencing beyond the apex of the stigma ; the areolet oblique, horseshoe-shaped, 

 and with the nervures curved, touching at the top. 



This is a stouter insect than M. championi ; with more black on the thorax, the black 

 extending down to near the end of the scutellum (which is itself not marked with black), 

 and there is a triangular black band on the front of the pronotum ; the hind femora are 

 only slightly black at the extreme base. The metanotal arese do not show any appre- 

 ciable difference, nor do the wings. 



/\ Microdus championi. (Tab. XVI. fig. 12, * .) 



Niger, antennis, capite, mesonoto, abdominis apice late, coxis, femoribus, apice tibiarum tarsisque posticis 



nigris, ore facieque flavis ; alis flavo-hyalinis, stigmate flavo cum basi nigra, c? • 

 Long. 10 millim. 



Hab. Guatemala, San Geronimo (Champion). 



Antennae stout, tapering very perceptibly towards the apex, densely pilose. Face 

 strongly punctured. Frontal depressions moderately deep, wide. . Mesonotum punc- 

 tured, but not strongly, the middle lobe with a broad V-shaped depression at the base. 



