ASHMEAD : CLASSIFICATION OF THE CHALCII) FLIES 229 



prominent, acute, cultriform or lanceolate ; ovipositor long, prominently exserted ; ^ always 

 apterous, the head anteriorly with a deep triangular fovea, in which are placed the short 3-9-jointed 

 antennae ; the abdomen in the c? 's broadly sessile, long and tubular, thickened at base, or 



broadened apically with a tubercle or filament at each apical angle Family LX. AgaoniDvE. 



Head rarely oblong and quite differently formed, never with a deep broad longitudinal furrow above, 

 most frequently transverse, or subquadrate, the occipital margin never with a small recurved spine ; 

 mandibles and palpi without saw-like appendages ; middle legs not especially slender, the anterior 

 and posterior legs are often stout, but their tibia; are always longer, at least never shorter than 

 their femora ; hypopygium rarely very prominent ; cf most freiiuently winged, rarely apterous ; in 

 the latter case the abdomen is normal, not long and tubular. 



Mesopleura large, entire, without a femoral furrow, except occasionally in some males, the 

 ^ mes'i&pisterirUm large, triangular, not extending to base of front coxie ; middle tibial spur 



saltatorial, most frequently long and stout, or dilated at base 8 



Mesopleura always with a femoral furrow or impression, the inescpisterhhin variable, rarely 

 large, except in the Cleonymidm, most frequently small, wedge-shaped, or linear and extend- 

 ing to base of front coxa; ; if largeand triangular, either the auterior or the posterior femora 

 are mucrh swollen ; middle tibial spur not saltatorial, usually short or weak, never very stout. 

 Hind tibiie with 2 apical spurs, rarely with 1 only ; In the latter case the radius termi- 

 nates in a large, rounded stigma, the ovipositor very long 4 



Hind tibite with 1 apical spur ; ovipositor rarely long ; if long the stigma is small 9 



Mandible%i falcate, usually with 1 or 2 teeth within ; thorax most frequently very gibbous, the 

 scutellum usually very large, often abuormally developed, elevated and produced posteriorly, the 

 axilliB connate, not distinctly separated from the surrounding surface and broadly united along 



their inner margins 6 



Mandibles usually 3-4-dentate at apex, rarely falcate, with 1 or 2 teetli within ; thorax not, or very 

 slightly, gibbous, the axilhe distinctly separate, their inner margins most fiecpiently widely 

 separated, very rarely touching. 



Hind coxie rarely much larger than the anterior coxse, most frequently smaller or equal ; if 

 much larger, the pronotum is elongate, mesepisternum large, the hind legs very long, the 



postmarginal vein very long ; ovipositor very rarely prominent. .' 5 



Hind coxie very large and long, usually five or six times larger than the anterior cox;e. 



Hind coxaj subtriquetrous, or at least compressed into a shaii) ridge above ; hind femora 

 rarely very much swollen, aud most frequently simple, rarely with one large tooth or den- 

 ticulate beneath ; hind tibia usually straight ; abdomen most frequently subcompressed 

 (more rarely depressed), with a long ovipositor ; if without au exserted ovipositor, the 

 abdomen is conical or conic-ovate with a peculiar sculpture, the radius (stigmal vein) 



usually very short, the hind tibia; at apex normal Family LXI. Torymid^e. ^ 



Hind coxa; usually very long and subcylindrical ; hind femora always much swollen and 

 most frequently armed with teeth beneath or finely serrated, rarely without teeth ; 

 hind tibia; strongly curved and obliquely truncateiy produced at apex, so that the tarsi 

 seem to be attached a little before tips ; abdomen of various shapes, most frequently 

 conical or conic-ovate, more rarely globose, or oblong-oval, the ovipositor very rarely 



prominent ; radius variable, rarely very short Family LXII. Chalciuid-k. 



Pronotum rarely transverse quadrate, conical or coiiically produced anteriorly, or very short, trans- 

 verse linear, aud very much narrowed medially, rarely as wide as the mesonotum 7 



:.u.>.i. 



