58 Journal New York Entomological Society. [Voi. vn. 



1 8. Eyes round, or short oval, not emarginate within 22 



Eyes very large, occupying most of the sides of the head, not emarginate within, 



but sinuate or emarginate on their external margin superiorly 21 



Eyes long oval, or ovate, and always more or less deeply emarginate within at 

 their apical third. 



Front wings with two submarginal cells 20 



Front wings with three submarginal cells, or the third at least partially formed, 

 not entirely obliterated. I9 



19. Metathoracic angles, normal, neither produced nor dentate ; abdomen sessile or 



.subsessile, the first segment not separated from the second by a constriction 

 or furrow. 

 Scutellum conically or triangularly elevated ; mesonotum with distinct furrows ; 

 mandibles bidentate ; hypopygium margined at sides, emarginate at apex. 

 (Africa. ) 



(Type M. medon Smith) Trogaspidia AsJnn. g. n. 

 Scutellum normal, at the most subconvex. 



Mesonotum with distinct furrows or the furrows always indicated posteriorly; 

 stigma usually well developed, but sometimes pale or open in the 

 middle ; scape normal. 

 Mandibles excised or sinuate beneath before the middle and usually 

 wuth a process or projection before the incision ; dorsal abdom- 

 inal segments 3-6 without a median longitudinal carina. 

 Mandibles at apex tridentate ; first joint of flagellum usually 



longer than the second Mutilla Linne. 



Mandibles at apex bidentate ; first joint of flageHuni not longer 



than the second Timulla Aslun. g. n. 



Mandibles simple, not excised beneath, at apex bidentate ; dorsal ab- 

 dominal segments 3-6, usually with a median longitudinal carina. 



Ronisia Costa. 

 Mesonotum luithout distinct furrows ; stigma not well developed ; man- 

 dibles normal, bidentate Scape bicarinate beneath ; first and second 

 joints of flagellum usually transverse or not longer than wide 



Ephuta Say. 



20. Metathorax with the upper hind angles produced into a tooth ; mesonotum luith- 



out distinct furrows ; scutellum large, flat, the hind angles produced into a tooth 

 which curves inwardly. (Africa.) Type O. a/'/'o//i AsuM. 



Odontomutllla Ash?n. g. n. 



Metathorax normal ; mesonotum 'coith distinct furrows ; scutellum iiDrmal, the post 



scutellum armed on each side with a small nearly vertical tooth or spine; 



stigma large, the marginal cell long Pseudophotopsis Andre. 



21. Post scutellum armed on each side with a small nearly vertical tuoth. 



PseudophotopsJs Andre. 



Post .scutellum unamied ; abdomen longly petiolated, the petiole subclavate ; 



mesonotum ivith distinct furrows. 



Front wings with three submarginal cells, the third sometimes incomplete or 



only partially formed ; stigma small and indistinct or hyaline within ; 



mandibles strongly excised beneath Trichoiabiodes J-iadoszk. 



