ashmkad: classiI'-ication of tiik chai.cii) fliks 329 



Thike II. Pdchijncariiii. 



In this tribe the antcmue are inserted near the middle of tlie face, and the 

 marginal vein in the front wings is always thickened and usually short. 



The species, like the Amphinl are said to be parasites of coccids and aphids, but 

 these insects have other hymenopterous parasites, braconids, encyrlids, cyi lipids, 

 etc., and the Pachyneurbu are prol)al)ly hyjjerparasites of these insects. 



A few have also been lired from diptennis insects belonging to the i'aiiiily 

 Sijrplndiv, which also have other hymenopterous parasites, and this seems to con- 

 firm the hypei-parasitism of these insects. 



table of oeneka. 



1. Females 2 



Males 7 



2. Mesothoracic furrows distinct, complete 3 



Mesothoracic furrows incomplete, indicated only anteriorly 4 



3. Stigmal vein with a large knob ; abdomen ovate, pointed at apex, the second segment large, the tliird 



segment very short, the fourth and fifth rather large, subequal, the following very short. 



Pachycrepis Forster (type Caruna clavata Walk.). 

 Stigmal vein with a .small knob : abdomen ovate, tlie second and the third segments large, the fourth 

 and fiflh very short, the sixth and soveiilli longer. 



Pachycrepoideus Aslimead, g. nov. (type P. dubius Ashni.). 



4. Abdomen above flat or depresse<l r, 



Abdomen above convexly rounded G 



5. Pronotum much narrower than the me.sonotum acros.s the shoulders ; abdomen oval or short ovate, the 



second segment the longest, occupying a good portion of tlie surface, the third and fourth short, nearly 



ecjual, the following vei-y short Pachyneuron Walker (type P. formosum Walk.). 



Pronotum as wide as the mesonotura acro.ss the shoulder.s ; sciitellum with a cross-furrow just before the 

 apex ; abdomen seen from above ovate, nearly as long as the head and thorax united, beneath com- 

 pressed or keeled, the ventral valve prominent, plowshare-shaped, the second segment fully twice as 

 long as the third, or longer, the fourth a little longer than the third, the following subequal, the sixth 

 as long or a little longer than the fifth Euneura Walker (type E. auganis Walk.). 



6. Pronotum narrower than the mesothorax ; scutcllum without a cross-furrow before apex ; abdomen ovate, 



the second .segment the longest, the third, fourth and fifth not short, subequal, the fourth a little the 

 longest, the sixth about one third shorter than the fifth. 



Hypsicamera Furster (type H. lalzebinf/ii Keinliard). 



7. Mesothoracic furrows incomplete, indicated only anteriorly S 



Mesothoracic furrows comjilete. 



Stigmal club large Pachycrepis Fcii-ster. 



Stigmal club small Pachycrepoideus Ashmead. 



8. Pronotum as wide ivs the mcsonotum ; scutcllum with a cross-furrow before the aiiex. Euneura Walker. 

 Pronotum narrower than the mesonotum ; scutellum without a cross-fui-row before apex. 



Metanotum rather short ; funicle joints not more than twice as long as thick. 



Pachyneuron Walker. 

 Metanotum long ; funicle joint;. Ilirice as long as thick Hypsicamera Forster. 



