NO. 1206. ICHNEUMON FLIES— ASHMEAD. Gi) 



Metanotum regularly areolated; ocelli nearer to each other than to the eye 

 margin (-174) Prionopoda Holmgren. 



7. Hind tarsi normal, not iiuicli tliickened 8 



Hind tarsi much thickened. 



Front wings uithout an areolet; head almost quadrate, the ocelli deeply 

 concave (475) Scolobates Gravenhorst. 



8. Ovipositor in female more or less distinctly visible; male antennic normal or 



■)iot strongly compressed and dilated at the middle 9 



Ovipositor in female concealed, invisi))Ie; male antennae strongly compressed 

 and dilated at the middle. 



(476) Euinesim \YesUvood=: Euceros Gravenhorst. 



9. Clypeal fovepe not clothed with a tuft of hairs 11 



Glypeal foveae clothed with a tuft of hairs 10 



10. Front wings with an areolet {477 )Errumenus Holmgren. 



Front wings unthout an areolet (478) Trichocalymma Fdrster. 



1 1 . Clypeus separated from the face by a distinct cross furrow 12 



Glypeus not at all separated ( 479 ) Monoblastus Hartig. 



12. Claws thickly combed, especially at apex, without pectinations basally. 



(480) Qenacme Forster. 

 Claws not thickly combed at apex, vfith jjectinations basally. 

 Vertex not separated from the occiput by a sharp keel. 



(481) Lathrolestes Forster. 

 Vertex separated from the occiput by a sharp keel. 



Front wings ivith an areolet (482) PolyUastus Hartig. 



Front wings without an areolet (483) Scorpionis Forster. 



Tribe IV. TRYPHONINI. 



1855. T)^phonides homalopi (part) HoLMCiREN, Svensk. Vets.-Akad. Handl., I, 



p. 98. 

 1868. Tnjphonoidx, Family 36, Forster, Verb. d. naturh. Ver. pr. Rheinl., XXV, 



pp. 145 and. 

 1883. Tryphonina, Tribus, Thomson, Opus. Ent., IX, pp. 875 and 895. 

 1889. Euryprociides, Subtribus, Thomson, Opus. Ent., XIII, p. 1429. 

 1894. Tryphomni, Tribe IV, Ashmead, Proc. Ent. Soc. Wash., Ill, p. 277. 

 1897. Tryphonini, Tribe, Davis, Trans. Am. Ent. Soc. , XXIV, p. 265. 

 1900. Tryphonini, Tribe IV, Ashmead, Smith's Insects of New Jersey, p. 578. 



As at present characterized, this is the largest and most extensiv^e 

 g-roup in the subfamily Tri/phonmce, and is susceptible of subtribal 

 divisions. Its nearest allies are the Ctetiopelmijii, from which it is 

 separated by the smiple, not pectinate, claws. From the Bassini it is 

 separated by the Videntate., not tridentate, mandibles, while from all 

 the other tribes, having a sessile abdomen, it is separated by having 

 illy) apical spurs on the middle tibia?. 



One hundred and eleven genera have been recognized, distinguish- 

 al)le b}'^ the characters made use of in the following table: 



table of CiENERA. 



Antennre more than 14-jointed; areolet of the front wings wanting, or if present, never 

 pentagonal 2 



Antennse H-jointcd; areolet pentagonal, sometimes open behind; metathorax short, 

 obliquely truncate posteriorly but smooth; exareolate, the s})iracles 

 small, round (484) Fammici'a Forster 



