NO. 1200. ICHNEUMON FLIES— ASHMEAD. 73 



30. Last joint of the hind tarsi not longer than the third 40 



Last joint of the hind tarsi longer than the third. . . (531) TrojiJiorlonvs Fiirster. 



40. Clypens irillt a transverse impression before the apex.. (532) Sijitomdiv Forster. 

 Clypeus tdtJiout a transverse impression before the apex. 



(533) Guslrujiuni.s Forster. 



41. Clypeus not so impressed that the middle is produced into a tooth 42 



Clypeus with a distinct transverse impression on the anterior margin, which 



l^rojects medially into a more or less distinct tooth. 



(534) Paviorh.rsies Forster. 



42. C-lypeus forming a flat triangle with the longest side along the anterior margin. 



(535) Zapedidn Fiirster. 

 Clypeus not forming a flat triangle. 



First abdominal segment vUhout lateral carinae, or if present never extend- 

 ing beyond the spiracles 43 



First abdominal segment with two dorsal carin;e which extend beyond the 

 spiracles (536) Dialgcs Forster. 



43. Frons imthout a middle carina; second and foll()wing abdominal segments not 



all smooth 44 



Frons with a middle carina; second and following segments smooth. 



(537) Zcmiophron Forster. 



44. Clypeus not transversely impressed before the tij) 45 



Clypeus transversely impressed before tlie tip, so that the anterior margin 



appears interrupted. 



Stigma extremely narrow, the radius originating from its basal one-third; 

 base of discoidal cell fully twice as wide as the apex of the second 

 discoidal cell (538) Oneista Porster. 



Stigma more or less narrowed, the radius originating at or before the middle, 

 never from the basal third; base of discoidal cell not twice as wide 

 as the second discoidal cell at apex (539) Dysanten Forster. 



45. Face and clypeus medially not swollen 46 



Face and clypeus medially much swollen (540) Nocmon Forster 



46. Longer spur of hind tibite not attaining half the length of tlie tarsus; third joint 



of hind tarsi scarcely longer than the last joint; second abdominal 



segment quadrate (541) Parapksius Forster. 



Longer spur of hind til)ife attaining half the length of the tarsus; third joint of 

 the hind tarsi much longer than the last joint; second abdominal 

 segment not quadrate. 



Mesonotum and scutellum strongly punctured, but shining; metathorax with 

 the petiolar area very wide with a median carina; first abdominal 

 segment with a A^ery deep long furrow (542) Trysicaiupe Forster. 



Mesonotum and scutellum finely shagreened and finely punctured; meta- 

 thorax with the petiolar area short, narrow, without a middle 

 carina; first abdominal segment without a long furrow. 



(543) Nythophomi Forster. 



47. Middle femora beneath, near the base, toothed (5-14) JEolomet'iH Forster. 



Middle femora beneath normal, not toothed. 



Second abdominal segment with distinct thyridia 59 



Second abdominal segment ivUhout thyridia at base or the same lying so 



close to the base as to be entireh^ invisible 48 



48. Transverse median nervure in hind wings broken at or below the middle 49 



Transverse median nervure in hind wings broken above the middle. 



Mesonotum anteriorly trilo1)ed; metathorax with the areola not longer than 

 the petiolar area; transverse median nervure in liind wings broken 

 only a little above the middle (545) PuUjpyM'ts Forster. 



