* STEONG-ILOGASTEB. 13 



second joint longer than broad, thicker at apex than at base ; third joint about one 

 third longer than fourth. Tegulse testaceous. Third cubital cellule not longer than 

 second, with one faint spurious vein ; third transverse cubital nervure with two bullae. 

 There is a horny point in the costal cellule. The claws have a subbasal tooth ; the 

 anterior tarsi are fuscous. 



Similar to S. nigricornis, but broader and shorter ; the antennae are white at the base, 

 thicker, and a little shorter ; the third cubital cellule is shorter than the second, and 

 wider throughout than in S. nigricornis ; the wings are darker ; and the abdomen has 

 no black dorsal band. 



17. Strongylogaster tibialis. 



Luteus, capite, antennis, macula mesonoti, abdominis apice, pectore, tarsis tibiisque 4 posterioribus nigris ; 



alis fere hyalinis, costa stigmateque nigris. 

 Long. 8| millim. 



Hab. Panama, Volcan de Chiriqui (Champion). 



Frontal sutures absent ; frontal area scarcely indicated ; but there is a distinct furrow 

 round the lower ocellus. Lateral fovese large, with a tubercle in the centre ; central 

 fovea much larger, and with a large square tubercle at apex. Eyes converging. Antennae 

 a little longer than the abdomen, thickened slightly in the middle, attenuated at the 

 apex, pilose. Third cubital cellule a little longer and narrower than the second, and 

 traversed by two spurious veins, which extend into the fourth cellule, where they end 

 beyond its middle ; another pair of spurious veins are in the discal (apical) cellule ; 

 the transverse median nervure is received before the middle of the cellule. Claws 

 bifid ; tegulae testaceous. 



A broader and somewhat shorter insect than 8. nigricornis ; the third cubital cellule 

 is longer compared with the second; antennae thicker in the middle, the second joint 

 more globular, and not much thinner than the first, w r hile in S. nigricornis it is much 

 thinner, especially at the base ;' the spurs, too, are longer. 



18. Strongylogaster nigricornis. 



Bufus, capite, antennis, pectore, abdominis dorso medio, tarsis tibiarumque posticarum apice nigris ; alis fere 



fuscis, costa stigmateque nigris ; ore albo. 

 Long. 9 millim. 



Hab. Guatemala, Duefias (Champion). 



Frontal area flat, the sides distinct, especially behind, where it is rounded ; the apex 

 is wider and truncated ; lateral fovese longer than broad, without tubercles ; central fovea 

 flat, nearly square, but rather broad at the apex. Apex of clypeus rounded. The 

 clypeus, labrum, mandibles, and palpi are white. The antennae are slightly thickened ; 

 the third joint thin, much longer than the fourth, thickened slightly at the apex ; two 

 basal joints thicker than it ; the second thinner, especially at base, and a very little 



