NO. 1206. ICHNEUMON FLIES— ASHMEAD. 97 



3. Abdomen subcompressed at apex, the ovipositor subexserted; disc'o-cul)ital 



nervure nol broken by a stump of a vein. 

 Transverse median nervure not interstitial, the median cell longer than the 

 submedian; mouth parts lengthened (745) Lapton Nees. 



4. Disco-cubital nervure not angularly broken, without a stump of a vein 6 



Disco-cubital nervure angularly broken, ivith a stump of a vein, or at least a 



trace of one 5 



r>. ]\Ietathorax without a distinctly separated jietiolar area; mesonotum not trilobed. 

 Head very broad, the forehead with a horn between the antennae. 



(746) Semnoplirys Forster. 1 ^ Rlujndiobanrhns Kreichbaumer. 

 Head not very broad, the forehead normal, without a horn. 



(747) Exetastes Gravenhorst. 



6. Areolet sessile; niouth parts normal 7 



Areolet petiolate; mouth parts abnormal, the labium very elongate, forked at 



apex 11 



7. ^l^^owoium without parapsidal furrows, the va.etath.or&'s. without a distinctly sep- 



arated petiolar area 8 



Mesonotum vith parapsidal furrows, the metathorax tvith a large, distinctly sep- 

 arated pjptiolar area; second recurrent nervure joining the areolet 

 at its hind angle; clypeus narrow, transverse; ovipositor prominent. 



(748) Xenochesis Forster. 



8. Areolet quadrangular. 



Last joint of maxillary palpi normal 9 



Last joint of maxillary palpi abnormal, knobbed; scutellum ending in a 

 spine ( 749) Corynephanes Wesmael. 



9. Abdomen toward apex gradually acuminate, or pointed, with oblique furrows 



on segments 2 and 3 10 



Abdomen toward apex more or less compressed and widened ventrally; no 

 oblique furrows on segments 2 and 3. 

 Head normal, the labrum not elongate; claws in female pectinate. 



Scutellum at apex armed with a thorn.. (750) Oidaphurus Forster. 

 Scutellum simple, unarmed (751) Banchus Gravenhorst. 



10. Claws in female with one or two teeth near the base -(752) Ceratosoma Cresson. 



11. Mesonotum without parapsidal furrows; transverse median nervure in front 



wings not interstitial, the submedian cell slightly longer than the 



median (753) Agathobandms Ashmead, new genus. 



(Type, Banchus xquatus Say.) 



Mesonotum »v7/( parapsidal furrows; transverse median nervure in front wings 



interstitial with the l)asal nervure (754) Agdthilla Westwood, 



Tribe VIII. MESOCHORINI. 



'1868. Mesochoroidu', Family 20, Fokstek, Verb. d. naturh. Ver. pr. Rheinl., 



XXV, pp. 143 and 170. 

 1892. Mesochorinl, Tribe, Ashmead, Ent. News, III, p. 106. 

 1894. Mesochorim, Tribe X, Ashmead, Proc. F!nt. Soc. Wash., Ill, p. 277. 

 1900. Mesodtorini, Tribe VIII, Ashmead, Smith's Insects of New Jersey, p. 583. 



The position of this tribe is somewhat uncertain. It comes evi- 

 dently nearest to the Paniscini, although it is placed here after the 

 Banchini. 



The abdomen is distinctly petiolate and the tribe is at once sepa- 

 rated from both of the above-mentioned tribes by the position of the 

 Proc. K M. vol. xxiii 7 



