2 Annals Entomological Society of America [Vol. IV, 



5. Antennae not their diameter apart at base; the basal joint with long bristles 



Palpares 

 Antennas more than diameter of basal joint apart; smaller species. .Tomatares 



6. Spurs longer than the basal joint of tarsus, which is very short 7 



Spurs not longer than the basal joint of tarsus, which is longer than the 



second joint 9 



7. Body very hairy; legs very short; spurs much curved 8 



Body but little hairy; legs more slender; spurs nearly straight; a line through 



the apical part of wings Myrmecaelurus 



8. Costal series double Syngenes 



Costal series single Acanthaclisis 



9. The branches of radial sector are bent to form a straight line through the 



middle of the apical part of the wing; basal joint of the tarsus about as 



long as the apical Nesoleon 



No such line through the wings 10 



10. In fore wings the radial sector arises before the cubital fork; many costals 



before the stigma are crossed Hagenomyia 



In fore-wings the radial sector arises much beyond the cubital fork; costals 



are mostly simple Myrmeleon 



(a) A series of cross-veins before the radial sector are crossed; very large 



species subgenus Macroleon 



11. Spurs present and distinct 12 



No spurs: 



Legs very slender Gymnocnemia 



Legs of usual length Gymnoleon 



12. The forks of cubitus in the fore-wing are parallel for a distance, and the anal 



is also parallel to them Creagrls 



The forks of cubitus diverge, and the anal is not parallel to the upper branch, 

 and to the lower only for a short distance 13 



13. Joints 2, 3, and 4 of tarsus very long, each as long as basal joint. . . .Megistopus 

 Joints 2 and 3 very short, but little longer than broad 14 



14. Legs very slender; the tibiae I and II as long or longer than femora I and II; 



basal tarsal joint nearly as long as apical; spurs as long as two joints; 



antennae very slender; w ; ngs broad and much marked (Dcndroleoni)... . 15 



Le£s shorter; the tibi.-p I and II shorter ihan femora I and II, the basal tarsal 



joint plainly shorter than the apical (Nemo'eonim) lii 



15. Wings especially hind pair very strongly ;alcate at tip; first joint of tarsus 



longer than the last Cymothales 



Wings hardly falcate; the branches of radial sector bent to form a straight 

 line through the middle of apical half of wings Dendroleon 



16. In hind-wings the anal does not run directly to the margin but bends upward 



making a long curve; the radial sector arises before cubital fork in both 



wings Echthromyrmex 



In hind-wing the anal runs directly to the hind margin 17 



17. Spurs but little longer than the long first joint of tarsus; first branch of radial 



sector arises beyond end of the anal vein Nemoleon 



Spurs longer than the first tarsal joint, which is short 18 



18. Spurs as long as three or four joints of tarsus Formicaleon 



Spurs not so long, about as long as two tarsal joints Macronemurus 



Under Stenares I have placed Crambomorphits. Both are 

 hardly more than subgenera of Palpares. Symmathetes is 

 united with Palpares. A species of Glenurus is described from 

 Africa, but from the figure it is a Dendroleon; the genus Palpari- 

 dius, lately described by Peringuey, appears to be identical with 

 Echthromyrmex. The Centroclisis of Navas I consider the same 

 as Acanthaclisis. 



