IPHIATJLAX. 357 



/3. A Jceel in the centre of the third and fourth segments. Palpi white. 



(Species 40.) 



N^ 40. Iphianlax tinctipennis. (Tab. XIV. fig. 16, s .) 



Jfi iger, abdomine flavo-testaceo ; articulatione suturiformi striolata ; alis fusco-violaceis. S • 

 Long. 11 millinu 



t . Hab. Costa Rica, Cache (Rogers). 



Antennae longer than the body, the flagellum of almost uniform thickness ; the basal 

 joints clearly, the apical joints less distinctly, separated ; covered with a close 

 greyish pile. Head nearly as wide as the mesothorax, considerably developed behind 

 the eyes; the latter large, margined, projecting laterally, and reaching to the base of 

 the clypeus. Face covered with longish white hair, the centre aciculated ; the furrow 

 in front wide and deep, and also aciculated. Palpi testaceous. Pleurae and sternum 

 sparsely covered with long pale hairs. Coxee and trochanters on the underside bearing 

 long white hair. Abdomen longer than the head and thorax united. Petiole obliquely 

 vertical ; its central part raised, acute at the base, more rounded at the apex ; the inner 

 farrow wide and moderately deep, its margin in the form of an acute irregular keel ; 

 the outer furrow placed on a much lower plane than the inner one. Second segment 

 with an acute keel reaching to the apical third, and a narrow furrow on either side ; 

 the lateral furrow wide, deep, and oblique. Suturiform articulation wide, moderately 

 deep, and not very distinctly crenulated. Third segment with a narrow furrow as deep 

 as the suturiform articulation ; in the centre is a keel reaching to a little beyond the 

 middle. Fourth segment with a keel similar to that on the second, but not quite so 

 strongly marked, and scarcely reaching to the middle. 



2. Suturiform articulation not crenulated. (Species 41.) 

 Xti. Iphianlax lsevis. (Tab. xiv. fig. 17, $ .) 



Bracon lavis, F. Smith, Descr. New Species of Hym. p. 234 (1879) \ 



Hab. Guatemala, San Geronimo, Purula (Champion) ; Costa Rica, Cache 1 (Sogers). 



Antennee as long as the body, thick, scarcely tapering towards the apex, closely 

 covered with a greyish pile ; basal joint as long as the following three joints united, 

 shining, bearing some longish black hairs. Head sparsely covered with longish black 

 hairs ; cheeks punctured ; face aciculated ; front and vertex shining, the former not 

 much depressed in the centre and with the furrow wide and deep. Eyes oblong, 

 reaching nearly to the apex of the clypeus, the head retreating sharply behind them. 

 Thorax shining, impunctate, sparsely pilose ; the metathorax with a gradually curved 

 slope. Petiole oblique, its inner furrow wide and moderately deep ; the apex of the central 

 part somewhat acutely rounded. Second segment with a small raised triangular area at 

 the base, from which a flat, not very clearly defined, keel proceeds to a little beyond 



