30 iTEMENOPTERA. 



M. mexicana seems to be very closely allied to this ; but it has the coxae at the apex, 

 the trochanters and the base of the femora, the anterior femora and tibiae in front, and 

 two thirds of the hinder femora below white, and the tegulae red ; the wings, too, are 

 equally sub violaceous. 



19. Monophadnus clypeatus. 



Niger, pronoto, mesonoto tegulisque sanguineis, clypeo, genibus tibiisque anterioribus margine antico sordide 



albidis ; alis violaceis. 

 Long. 6^ millim. 



Hab. Guatemala, Cerro Zunil, 4000 feet (Champion). 



Very similar to M. imitatrix, but smaller, the antennae longer, more pilose, the third 

 joint longer, being almost double the length of the fourth ; the frontal foveae are 

 smaller, nearly equal in size, and distinctly separated ; the pit enclosing the ocellus is 

 roundish, not triangular ; labrum black ; the tegulae are red, the third cubital cellule is 

 shorter. The claws are bifid. The wings are deep violaceous, very slightly lighter in 

 tint at the apex. 



20. Monophadnus erebus. 



Monophadnus erebus, Kirby, List of Hymen, i. p. 178, t. 8. f. 10 \ 

 Hab. Mexico. — Amazons, Para 1 . 



21. Monophadnus melanosternus. 



Luteus, antennis, pleuris, sterno abdominisque apice nigris ; pedibus nigris, apice coxarum, trochanteribus, 



basi tibiarum et tarsorum albis ; alis flavescenti-hyalinis, apice fumato ; nervis flavis. 

 Long, fere 10 millim. 



Hab. Panama, Bugaba (Champion). 



The antennae are densely pilose; the four apical joints are abruptly shorter, and 

 together are not much longer than the third joint. Clypeus truncated at the apex, 

 rounded at the sides ; three frontal foveae large, deep, lateral round, middle longer and 

 deeper ; there is a fovea below the lower ocellus, and it is surrounded by a triangular 

 groove ; frontal sutures deep ; the second cubital cellule is not much longer than the 

 length of the first on its lowerside, and not much more than half the length of the 

 third on its upperside ; the transverse radial nervure is received in the apical third of 

 the cellule ; first recurrent in the middle, second not far from the second transverse 

 cubital. The legs are densely pilose ; the basal tarsal joint is white in all the legs ; 

 claws bifid, spurs a little more than one third of the length of the metatarsus ; nearly 

 half of the anterior tibiae is white, of the posterior more than one third ; the anterior 

 femora are white at the apex ; the cloud in the fore wings commences at the end of 

 the stigma, extends backwards to the second transverse cubital nervure, and then 

 slopes along the second recurrent. 



This distinct species was received too late to be inserted in its proper place before 

 M. annulipes. 



