Mar. 1899] AsHMEAD: On SYNOPSES OF FAMILIES OF HyMEKOPTERA. 59 



Front wings with tliree suhmarginal cells, the third cubital again divided 

 into two nearly equal cells by a longitudinal vein originating from the mid- 

 dle of the second transverse cubital vein ; mandibles excised beneath ; 

 eyes extending to the base of mandibles. (Asia. ) 



Alioneurion Ashm. g. n. (Type A. kotepetica Radoszk.) 



22. Abdomen petiolate or subpetiolate, or always with a constriction or furrow be- 



tween the apex of the first and base of second segment 26 



Abdomen sessile or sub-sessile, without a constriction or furrow between the first 



and second segments, the apex of the first broadly sessile with the base of 



the second. 

 Front wings with three submarginal cells or the third is more or less partially 



formed, not entirely obliterated 25 



F"ront wings with only two submarginal cells, the third entirely obliterated. .23 



23. Eyes oval ; head quadrate, usually wider than the thorax. 



Myrmilla IVcnnael. 

 Eyes round ; stigma well developed 24 



24. Mesonotum with well defined furrows, or with furrows distinct posteriorly. 



Mandibles of an equal thickness to apex, where they are tridentate ; beneath 

 with a slight emargination before the middle ; malar space short, but dis- 

 tinct PhotOpsis Blake ( pars. ) 



Mandibles more pointed toward apex, bi- or tridentate, but with the lower or 

 outer tooth much the longer, acute ; beneath sinuate or emarginate ; malar 

 space entirely wanting, the eyes extending to base of manibles. 



Tricholabiodes Hadoszk. (pars.) 

 Mesonotum w ithotit distinct furrows. 



Head transverse, the temples very oblique ; ocelli large ; first joint of flagel- 



lum cylindrical, longer than wide, but still shorter than the second ; second 



submarginal cell triangular ; submedian cell much larger than the median. 



(Type P. nanus AsHM. ) /Vlicroniutilla Ashm. g. n. 



Head quadrate, the hind angles acute ; ocelli small ; first joint of flagellum 

 quadrate or hardly longer than thick ; second submarginal cell jientagonal ; 

 submedian cell not longer than the median PseudOtnethoca Ashm, 



25. Marginal cell rounded off at apex, not broadly truncate. 



Head subquadrate, the ocelli small ; mandibles toward apex broadened and 

 tridentate, the outer tooth the longest, acute ; mesonotal furrows wanting ; 

 first joint of flagellum scarcely longer than thick, much shorter than the sec- 

 ond (Type S. sanbornii Blake) I\omi£ephagus Ashm. g. n. 



Head transverse, seen from above obtrapezoidal, the ocelli large ; mandibles 

 beneath with a sinus or an emargination, acuminate and with a tooth within 

 before apex, mesonotal furrows distinct ; first joint of flagellum twice as long 

 as thick and as long as the second. 



(Type 5. atithophoi-ce h.'iwsi.) Pyrrhomutilla Ashm. n. g. 

 Marginal cell broadly truncate at apex ; mesonotum with distinct furrows ; man- 

 dibles at apex bidentate, not excised beneath; second ventral segment more or 

 less conically produced or elevated at basal middle. 



Eurymutilla Ashm. 



