NATURAL SCIENCES OF PHILADELrHIA. 129 



Subo-enus (Edicephalus. 



111 tilis subgenus the hetid is unusually large and swollen, very 

 broad behind the eyes, the occiput deeply emarginate, the man- 

 dibles very broad ; antennae generally longer than the body ; 

 thorax robust ; scutellum very broad, subquadrate, unituberculate, 

 more or less prominent ; metathorax short and broad, rather sud- 

 denly truncated behind, lateral tubercles very small or altogether 

 wanting; wings long, arcolet 5-angular ; legs long, more robust 

 than usual, posterior tibiai incrassate toward the tips, the inner 

 spur longer than usual ; abdomen short, ovate in 9 , subdeprcsscd, 

 petiole slender, apex of first segment very broadly dilated, gastro- 

 coeli broad, transverse and very deep, the second segment gene- 

 rally longitudinally aciculated. 



1. (Edicephalus longicornis. 



(Edicephalus longicornis, Cress., Trans. Am. Eut. Soc, ii. p. 27, 9- 



Cordova. 



2. (Edicephalus sororius. 



(Edicephalus sororius, Cress., Trans. Am. Ent. Soc, ii. p. 28. 



9. Black, face, orbits interrupted a little below summit of 

 eyes; cheeks, clypeus, mandibles except tips, palpi, annulus on 

 antennte, collar, teguloe, a line before wings, two abbreviated lines 

 on disk of mesothorax, two spots behind on each side of base of 

 scutellum, whole of pectus, scutellum except a central black line, 

 and a transverse line on postscutellum, white ; metathorax white, 

 with a black band near base, from which proceeds on each side a 

 longitudinal black stripe ; wings h^'aline, nervures and stigma 

 black; legs pale lemon-yellow, tips of posterior tarsi white, spot 

 at tips of posterior coxce, line on all the femora above, line on the 

 four anterior tibiae, most of their tarsi and bases of posterior tibiae, 

 black ; first abdominal segment white, with a broad black band 

 near the tip ; second segment black, with a broad white apical 

 margin and a white line on each side in front of gastrocoeli ; re- 

 maining segments white, more or less black at the base. Polished ; 

 scutellum elevated into an obtuse tubercle ; abdomen as in longi- 

 cornis. Length 4^ lines. 



Cordova. (Sumichrast, No. 84.) This may prove to be a variety 

 of longicornis^ although the antennae are shorter and more robust. 

 It is closely allied to (E. albovarixis^ from Cuba, 



