NO. 1206. ICHNEUMON FLIES— ASHMEAD. 193 



Laliiuin, or tongue, long or short, l)ut always acute medially at apex; hind femora 

 always with a pollen brush or flocculus, rarely very thin and sparse. 

 Front wings with two cubital cells; labium long or short, usually, however 

 narrowed and longer than the nientum; labrum rather large, dis- 

 tinct, not covered by the clypeus, most frequently inflexed. 



Family XI. Panukgid^e. 



Front wings with three cubital cells; labium shorter, not longer than the men- 



tum, triangular, not narrowed, rarely long; labrum not free, more 



or less hidden by the clypeus, or with the basal process alone visible. 



Family XII. Axukexid.tk. 

 7. Front wings with three cubital cells; head and thorax more or less clothed with a 

 dense pubescence; second recurrent nervure often more or less sin- 

 uate; laliium at apex rather deeply triangularly emarginate; hind 

 femora in female with a pollen brush or flocculus. 



Family XIII. CoLLETIDyE. 



Front wings with two cubital cells; head and thorax bare, or nearly; second recur- 

 rent nervure always straight; labium very short and broad, shal- 

 lowly or very obtusely triangularly emarginate at apex; hind femora 

 in female without a pollen brush or flocculus. 



Family XIV. Pkosopid^e. 



Siapei-fainily II. SPHECOIDE^'ii.. 



TABLE OF FAMILIES. 



Middle tibipe always with two apical spurs 5 



Middle tibise with only one apical spur (occasionally absent in some males). 



Median cell in hind wings not twice as long as the submedian, the latter often 

 the longer; front wings with two or three cubital cells; if with one 



only the head transverse, not quadrate 2 



Median cell in hind wings fully twice as long as the submedian; front wings 

 with only one cubital cell, very rarely with an indistinctly defined 

 areolet. 

 Head transverse, the temples not very broad; scutellum margined, the 

 postscutellum armed with a spine, thorn, or forked process, and 

 with squanue; front wings with the first discoidal cell obliterated, 

 rarely distinct, most frequently confluent with the second discoidal 



cell Family XV. OxvBELiDiE. 



Head large, quadrate or traj>ezoidal, the temples very broad; scutellum 

 normal, the postscutellum unarmed, without squama^; front wings 

 with the first discoidal cell always distinct, separated from the 



second Family XVI. Ckai5Roxid.e. 



2. Abdomen with a strong constriction between the first and second segments; eyes 



often emarginate within 4 



Abdomen without a strong constriction between the first and second segments; 

 eyes most frequently normal, rarely emarginate Avithin. 



Abdomen sessile, never petiolate 3 



Abdomen petiolate or subpetiolate; cubitus in hind wings usually origi- 

 nating before the transverse median nervure, more rarely intersti- 

 tial or originating slightly beyond it; transverse median nervure 

 not sinuate cP -shaped; ocelli distinct; labrum most frequently hid- 

 den, rarely triangularly exserted, never free. 



Family XVII. I'KMi'iiKEDONin.E. 

 Proe. N. M. vol. xxiii 13 



