48 HYMENOPTEBA. 



Easily known from S. villosa by the short non-dilated third cubital cellule and black 

 coxae and femora, these being in 8. villosa yellowish, it having besides a distinct first 

 transverse cubital nervure. 



7. Sericocera leucopoda. (Tab. III. fig. 3.) 



Nigra, clypeo, labro, antennis basi pedibusque albidis, tarsis tibiarumque posticarum apice nigris ; pronoto, 

 mesonoto cum scutello mesopleurisque supra rufis ; alis fumatis, cellula cubitali tertia altitudine bre- 

 viore, apice non producto. 



Long. 7 millim. 



Hab. Panama, Bugaba (Champion). 



The frontal sutures are deep ; the frontal area is raised, and has a thick sloping 

 border, is hollow in the centre, and becomes narrower and shallower towards the apex ; 

 but the apex has a small depression which is separated from the upper hollow by a 

 shallow ridge. The apical ocellus is bounded by the deep furrow of the frontal area. 

 The front between the antennas is carinated ; the clypeus is truncated at the apex. 

 The middle lobe of the mesonotum and the base of the pronotum are marked with 

 black. The transverse median nervure is united to the accessory nervure, which ends 

 at the junction of the two ; the first recurrent nervure is received in the basal third of 

 the cellule, the second close to the second transverse cubital nervure ; the third cellule is 

 shorter than broad, the top a little narrower than the bottom ; the third transverse 

 cubital nervure is curved. The antennae are filiform, densely pilose, and nearly as long 

 as the abdomen ; the basal joints are white on the underside, as is also the face 

 between the antennae and the clypeus. 



8. Sericocera laeta. 



Nigra, facie palpisque sordide albidis ; protborace, mesonoto cum scutello, pleuris tegulisque rufis ; pedibus albis, 



tibiis dimidio apic^i tarsisque nigris ; alis fumatis, stigmate fusco. 

 Long. 6 millim. 



Hab. Panama, San Felix (Champion). 



The antennae are thin, as long as the thorax and head together, densely pilose, 

 tapering towards the apex ; sutures on vertex indistinct ; frontal and antennal areas 

 obsolete, the lower ocellus situated in a very shallow pit ; clypeus shortly and roundly 

 incised. Abdomen short, not much longer than the thorax, truncated at the apex ; 

 sheath covered with long hairs. Wings long ; third cellule almost square, not longer 

 than the first ; second dilated at apex, and with a horny point. 



Allied closely to 8. leucopoda, but is a shorter and broader insect ; the third cubital 

 cellule is longer, and the third transverse cubital nervure is not so bent ; the second 

 recurrent nervure is received further from the second transverse cubital ; the pit in 

 which the lower ocellus is placed is not so deep nor so well marked as in 8. leucopoda, 

 and the tibiae are more broadly marked with black. The nervure along the upperside 

 of the radial cellule is very distinct, but does not form a cellule at the apex. 



