MICRODUS. 403 



Metanotum with the two basal areae small, acute at the apex ; of the middle areae the 

 central one is triangular at the base, transverse at the apex, that next to it being also 

 acute at the base ; there are five apical arese, the central of which is a little dilated 

 towards the apex, and the inner lateral one smaller than the outer ; all the areae are 

 smooth and shining. Abdomen a little longer than the head and thorax united. 



J^ 4. Microdus peronatus. (Tab. XVI. fig. 16, <$ .) 



" Luteus, antennis, capite, medio coxarum posticarum, femoribus, tarsis, apice tibiarum posticarum abdominisque 

 apice nigris ; alis flavo-hyalinis, fusco bifasciatis, stigmate flavo cum basi nigra, d" $ . 

 Long. 11 millim. * 



Hab. Panama, Bugaba, David in Chiriqui {Champion). 



Antennae stout, distinctly tapering towards the apex, a little longer than the body, 

 densely pilose; beneath brownish. Face densely pilose, shining, the central part 

 obscurely punctured ; the cheeks close to the eyes rugose ; the oral region broadly tes- 

 taceous ; tips of the mandibles black ; palpi yellow. Thorax shining ; the mesonotum 

 punctured, its middle lobe with two shallow furrows. Metanotum obscurely reticulated 

 between the keels ; with five basal, two wide lateral, a narrow A-shaped central, and four 

 apical" arese, the central basal areae not being continued to the apex. Abdomen 

 distinctly longer than the head and thorax united, compressed ; sheaths of the 

 ovipositor pilose, black, brownish at the apex. Fore wings with the central fascia faint, 

 but extending from the end of the transverse basal nervure to the base of the areolet ; 

 the apical fascia about one half broader ; areolet oblique, the nervures not much curved, 

 not meeting at the top. The male similar to the female, but with the apex of the 

 abdomen obscure fuscous. 



This is a larger insect than M. coxalis ; with the abdomen distinctly longer than the 

 head and thorax united (in M. coxalis it is not much longer than the thorax) ; the 

 metanotal arese more clearly defined ; and the punctuation on the mesonotum stronger, 

 almost rugose. 



It will be observed that M. peronatus differs from M. coxalis exactly in those points 

 in which M . championi differs from M. pulchripennis. 



^A~ 5. Microdus coxalis. 



Luteus, capite, antennis, coxarum posticarum, apice tibiarum posticarum tarsisque posticis nigris ; alis flavo- 

 hyalinis, fusco bifasciatis, stigmate flavo cum basi nigra. $> . 

 Long, fere 9 millim. 



Hab. Panama, Bugaba {Champion). 



Antennae stout, closely pilose, brownish beneath. Face densely covered with fuscous 

 hair ; shining, bearing some scattered punctures ; oral region testaceous, running into 

 brownish ; mandibles black at the tips ; palpi yellow. Thorax shining ; the mesonotum 

 finely punctured, the punctures widely separated ; the metapleurae shining ; the meta- 



3ff2 



