MONOPHADNUS. 25 



The transverse radial nervure is received in the apical third of the cellule, the trans- 

 verse median a little in front of middle of the cellule ; the second recurrent interstitial ; 

 the third cubital cellule is a little shorter than the second, much wider at the base 

 than at the apex ; bullse not very distinct. The claws are bifid ; the posterior spurs 

 black ; the posterior tibiae black, except at the base ; the middle pair only black at 

 the apical half. The two apical joints of all the tarsi are black; the rest of the tarsi 

 pallid testaceous ; the legs are more pallid in colour than the body. The sheath is 

 black and long. -2 



Very closely allied to M. testaceipes, but smaller and broader compared with the 

 length ; the antennae are thinner and not so densely clothed or with such a long pile ; 

 frontal area less defined, antennal fovese smaller and not united by a suture, the under 

 fovea especially being much smaller ; the clypeus is not so rounded, the nervures are 

 not so dark, being testaceous not blackish, the spurious veins less distinct ; and the tarsi 

 are not so white. 



8. Monophadnus testaceus. 



Testaceus, antennis sat dense pilosis, nigris, basi testaeea, foveola interantennali magna, tibiarum intermedi- 

 arum apice, posticis ultra medium nigris; tarsis albidis, apiee nigro; alis hyalinis, apice lenissime 

 fuseo, nervis fuscis ; stigmate et costa testaceis. 



Long. 11 millim. 



Hob. Guatemala, San Geronimo (Champion). 



Antennae pilose, the scape and the base of the third joint testaceous, thickened in 

 the middle, third longer than fourth ; last four joints abruptly shorter, very slightly 

 attenuated. Head narrow, retreating behind the eyes, where it is very slightly 

 developed ; sutures on the vertex shallow ; frontal area visible only as a depression in 

 front of the ocellus ; antennal fovea distinct, central large, a little longer than broad, 

 running into the lateral ones at its apex. Clypeus rounded. Face short ; eyes not 

 reaching to the mandibles. The transverse median nervure is received a very little in 

 front of the middle of the cellule, the transverse radial in the apical fourth ; third cubital 

 cellule wider and much shorter than the second; the second recurrent nervure is 

 received a very little in front of the second transverse cubital and in the second 

 cubital cellule ; the accessory nervure in the hind wing shortly appendiculated. Claws 

 simple ; the extreme apex of the posterior tarsi is black. 



Easily known from the other yellow species by the third cubital cellule being shorter 

 than the second, and by the second recurrent nervure being received in the second 

 cubital cellule ; but the latter may be an exceptional character. 



9. Monophadnus tibialis. 



Testaceus, antennis, tibiis tarsisque nigris, alis flavo-hyalinis, apice fusco, cellula cubitali 3 a longiore quam 2 a . 

 Long. 14 millim. 



Hab. Guatemala, San Geronimo (Champion). 

 biol. centr.-amek., Hymenopt., July 1883. ee 



tA 



