128 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 117 



tubercles prominent but not visible from above; eyes small, with short 

 erect bristles, ocular width about one-quarter that of vertex between 

 eyes (6:23), this distance two and one-half times as great as length 

 of head seen from above (23:9), head covered with pale pubescence 

 and longer tufts on apex and sides; frontal suture running very close 

 to base of head, sinuate, extending forward laterally, area between 

 it and eyes gently sloping, not distinctly flattened; clypeus prominent 

 between antenniferous tubercles. Antenna densely covered with 

 erect silvery hairs that are denser and longer on the first segment 

 than on second, relative lengths of segments 19:23:-:-. Rostrum 

 extending a little beyond the anterior trochanters, relative lengths of 

 segments 10:3:9:6. 



Pronotum very short, little more than half the width of an eye, 

 widening behind eyes, pubescence dense and fine. Fused meso- and 

 metanotum and abdominal segments covered with very dense white 

 pubescence becoming longer laterally and posteriorly. Suture be- 

 tween meso- and metasternum distinct, posterior margin of meta- 

 sternum (fig. 4) faintly but distinctly bilobed at middle with fine black 

 teeth between the lobes. 



Anterior trochanter armed with a tooth near apex; anterior femur 

 (fig. 3) strongly incrassate, slightly over twice as long as greatest 

 width; its imderside covered with long hairs, armed with a strong, 

 very prominent long spine at base, directed posterolaterally, a blunt 

 black tooth near apex followed by a small inwardly directed tooth; 

 a row of six short, curved spines between the basal and apical spines ; 

 anterior tibia covered with long hairs that are erect on outer side 

 and directed towards apex of tibia on mner side, base of tibia with a 

 black thickening ending in a tooth, followed by a deep depression 

 for the reception of the large tooth on apex of femur, beyond depres- 

 sion, a second thickening ending in a tooth, and a thii'd tooth near 

 apical third, followed by a row of small black triangular teeth that 

 extend to apex; outer side of tibia with three fau'ly evenly spaced 

 black pegs on apex, the usual pair of oblique combs of bristles present 

 on apex. Middle femur distinctly thickened on basal thu'd, densely 

 covered with long hairs, some of these as long as the width of the 

 segment at the point where they arise, a row of approximately 20 

 distinct hooked spines on under side; tibia and tarsus laterally com- 

 pressed, covered with long, white hairs, tarsus three segmented; 

 hindfemur unarmed, slightly thickened in middle, covered with long 

 hairs; hindtibia and tarsus laterally compressed, covered with long 

 hairs. Measurements (27.5 units = l mm.): anterior femur 42, 

 anterior tibia 40, anterior tarsus 2:4:11; middle femur 48, middle 

 tibia 28, middle tarsus 3 : 14 : 15; hindfemur 48, hhidtibia 28, hindtarsus 

 3:13:15. 



