NO.120G. ICHNEUMON FLIES— ASHMEAD. 17 



Clypeus medially on the anterior margin, emarginate or sinuate; metathorax 

 with the areola elongate rectangular, the labrum more or less 

 exposed; ciliate; antennte filiform. 



(34) Chosmias Ashmead, new name. 



= Chofimodes Wesmael nee, Cuvier et Valenciennes. 



(Type, Ichneumon notatoriux Gravenhorst. ) 



3. Ovipositor and sheaths not or only slightly extending beyond the tip of the 



abdomen 4 



Ovipositor and sheaths thickened and extending beyond the tip of the abdomen. 

 Antenn;e filiform; metathorax with the areola large, nearly hexagonal; 

 eighth dorsal abdominal segment exserted. 



(35) Exephanes Wesmael. 

 (Type, Ichneumon hilaris Gravenhorst.) 



4. Second abdominal segment cask-shaped, the sutures between segments 2, 3, 



and 4 very deep (36) Pithotomus Kriechbaumer. 



(Tyi)e, Pithotomus rifiventris Kriechbaumer.) 

 Second abdominal segment normal, not cask-shaped, trapezoidal, or rectangular. 

 Abdomen subdepressed, the petiole feel)ly bent. 



(37) Diphyus Kriechbaumer = Diphyes Kriechl^aumer. 



(Type, Dipliyes tricolor Kriechbaumer.) 



Abdomen convex, the petiole strongly curved or bent at the posterior third; 



Anterior tarsi in female somewhat dilated. . .(38) Eupalamus Wesmael. 



(Type, Eupalamus oscillator Wesmael.) 

 Anterior tarsi in female normal. 



Areola of inetanotum quadrate or nearly, the basal lateral and the 

 middle lateral areas i-onfluent; post petiole scabrous or rugulose; 

 flagellar joints 2—4 in female three or more times longer than 

 thick. 



(39) Stenichneumon Thomson. 

 (Type, Ichneumon jyisorius Linnseus. ) 

 Areola of metanotum quadrate, usually a little longer than wide, 

 the hind margin curved inwardly or more or less angularly 

 emarginate, the basal lateral and the middle lateral areas usually, 

 but not always, separated; jiost petiole aciculate; flagellar joints 

 2^ in female short, scarcely or not much longer than thick. 



(40) Ichneumon Linnanis. 



(Type, Ichneumon luctntorius 'Linnn'W^.) 



Areola of metanotum large, hexagonal or subquadrate, the basal 



lateral and the middle lateral areas usually separated; post 



petiole punctate; flagellar joints 2-4 in female subequal, longer 



than thick (41 ) Melanichneumon Thomson. 



(Type, Ichneumon spectahilis Holingren. ) 



Areola of metanotum horse-hoof shaped or nearly, a little wider 



than long, or cordate, the basal lateral and tlie middle lateral 



areas complete; antennae in female stout; flagellar joints 2-4 



longer than thick (42) Cratichneumon Thomson. 



(Type, Ichneumon luteirentrk Thomson. ) 



Areola of metanotum nearly semicircular, wider than long, the 



basal lateral and middle lateral areas separated; head subcjuad- 



rate; antennae and legs stout; flagellar joints 2—4 in female (piad- 



rate or nearly, not or scarcely longer than wide. 



(43) Barichneumon Thomson. 

 (Type, Ichneumon anutor Gravenhorst.) 



Proc. N. M., vol. xxiii 2 



