Hymenoptera. 23 



34. Hind tibiae with two apical spurs 35 



Hind tibiae with a single spur; ovipositor rarely long; mandibles usually stout, 



with three or four teeth at the apex; small black, bronzed or metallic species. 

 (Pteromalus, Dibrachys, Spalangia, Diglochis) (PI. 4, fig. 68). 



PTEROMALID^ 



35. Mandibles sickle-shaped, usually with one or two teeth within; thorax greatly 



elevated, scutellum usually much enlarged and produced behind; second 

 abdominal segment very large, generally covering the rest of the abdomen. 



(Kapala, Orasema.) EUCHARID^ 



Mandibles strong, generally with three or four teeth at apex ; thorax not or very 

 slightly elevated; axillae separated from the mesonotum 36 



36. Hind coxae very large, long; five or six times larger than the front ones 37 



Hind coxae never (in our genera) very large; not conspicuously larger than the 



front ones 39 



37. Hind coxae more or less triangular in section, sharply ridged above; ovipositor 



generally long; hind femora usually simple, rarely swollen and with a tooth 

 beneath; if denticulate beneath, the o\dpositor is long. (Callimome (= Tory- 

 vius), Diamorus, Monodontomerus, Podagrion, Ormyrus) {TORY M ID. E). 



CALLIMOMIDiE 



Hind coxae long, more or less cylindrical, hind femora greatly swollen and 



toothed or denticulate beneath, their tibiae curved, and oblique at apex . . 38 



38. Fore wings folded longitudinally in repose; ovipositor long, curving upwards 



and backwards over the dorsum of the abdomen (Leucospis). 



LEUCOSPID^ 

 Fore wings not folded; ovipositor only very rarely long, then not thus upcurved; 



tip of abdomen often drawn out as a slender, stiff process. (Chalcis, Phas- / 

 gonophora, Spilochalcis, Smicra.) CHALCIDID.^ 



39. Pronotum wide, not, or scarcely narrower than the mesonotum, quadrate. . .40 

 Pronotum narrower, usually narrowed in front, or transverse-linear, rarely as 



wide as the mesonotum 41 



40. Abdomen rounded or ovate, more or less compressed, the hypopygium usually 



produced in the female; second dorsal segment never very large; black or 

 yellowish species. (Isosoma [Joint worms], Evuytoma, Decatoma) (PI. 4, 



fig. 72) EURYTOMIDiE 



Abdomen subtriangular, small; thorax very large; metallic or submetallic 

 species; second and third dorsal segments occupying most of the surface of 

 the abdomen. (Perilampus.) PERILAMPIDiE 



41. Mesepisternum not large and triangular; none of the femora noticeably swollen; 



small bronzed or green species. (Eunotus, Semiotellus, Tridymus.) 



MISCOGASTRLD^ 



Mesepisternum large and triangular; either the front or hind femora more or 



less swollen and sometimes serrate; more or less metallic species (Cheiro- 



pachys, Cleonymus, Ptinobius) CLEONYMH).^ 



42. Hind coxae normal; mesopleura impressed 43 



Hind coxae much enlarged and dilated (PI. 4, fig. 64), their femora compressed; 



marginal vein greatly elongated; very small, usually blackspecies. (Elasmus.) 



ELASMID.^ 



