ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 299 



7. Flagellum very long, two or more times longer than the scape, the funicle joints all cylindrical 8 



Flagellum not so long, at the most not more than one and a half times the length of the scape, the 



funicle joints gradually decreasing in length, not all the joints longer than thick, some at least wider 

 than long 9 



8. Antennte very long and slender, as in Psilophrys, the scape very long and slender ; cheeks not quite 



the length of the eyes ; ovipositor very long Parapsilophrys Howard (type P. gelechm How.)- 



Antenn.ne long and slender hut shorter than in Psilophrijs, about twice as long as the scape, the joints 

 of the funicle long and cylindrical, the club not or only a little thicker than the last joint of the 

 funicle ; cheeks long Liothorax Mayr (type Encyrlus glaphyra Walker). 



9. Flagellum at the most about one and a half times the length of the scape, the funicle joints gradually 



decreasing in length, some toward the apex transversely ; club much thickened ; obliquely truncate 

 from beneath ; head and mesonotum finely, closely punctate or shagreened ; frons somewhat nar- 

 rowed ; eyes bare. Litomastix Thomson (type Encyrtus chalconotiis Dalm.). 



Flagellum short, not much longer than the scape ; the funicle joints, except the first, not longer than 

 thick ; club stout, broader than the funicle ; frons broad ; eyes faintly hairy. Berecyntus Howard 



(type li. bakcri Howard). 



10. Chocks as long a-s the eyes or nearly ; antennse rather long, the funicle joints, however, rarely more 



than twice a-s long as thick, gradually thickening apically ; the sixth joint never much longer than 

 wide and sometimes wider than long Copidosoma Ratzeburg (type C. houcheanus Ratz.). 



11. Checks more than half the length of the eyes ; pedicel hardly twice as long as thick ; the flagellum 



not long ; the joints of the funicle, except the first, small, not longer than thick, submoniliform, but 



gradually increasing in size Prionomitus Mayr (type Encyrlus milratus Dalm.). 



Cheeks very short, nearly obsolete ; pedicel three times as long as thick, the flagellum short, ela- 

 vate, the joints of the funicle annular, wider than long, the club greatly enlarged, longer than the 

 funicle ; mesonotum short, twice as wide as long, the pronotum not visible from above ; frons very 

 narrow, the lateral ocelli close to the eye margin ; eyes large, rounded, pubescent. 



ArcMnus Howard (type A. occiip<iluK How.). 



12. Mesonotum smooth, impunctate, blue or metallic ; pedicel about thrice as long as thick, the llagelkuu 



long, the joints of the funicle much longer than thick, the club somewhat stouter than the funicle ; 



eyes pubescent ; scutellum, but not the axilhe, shagreened. Parencyrtus Ashmead. 



(tyjie P. bragiliensis Ashmead). 



Mesonotum feebly, sparsely punctate, metallic blue or bluc-grcen ; pedicel hardly twice as long as 



thick, the flagellum long and slender, joints 4-5 twice longer than thick, cylindrical, the club 



3-jointed, not thicker tli;in the funicle; eyes large,' glabrous ; scutellum, as well as the axill.-e, 



sculptured Cerchysius Westwood (type Encyrtus xubj>lanus Dalm.). 



\?,. Abdomen globose, or subovat«, much shorter than the thorax, compressed, clothed with a rigid white 



pubescence, the second segment usually large, .smooth medially ; species sometimes apterous. 14 



Abdomen with the dorsum flat or concave, not rigidly pubescent 1<> 



14. Pronotum not large ; antenna; simple, the flagellum usually long, siibclavate, but not broad nor com- 



pressed !•' 



Pronotum large, conical, longer than the mesonotum ; antenna' with the scape and the flagellum 

 broad, strongly compressed; abdomen globose Mira Schellenberg (type M. macrocera Schell.). 



15. Head above rounded, seen from in front much longer than wide ; frons narrow ; scape long and 



slender ; scutellum not longer than the mesonotum. coriaceous : abdomen ovate, as long as the thorax. 



Sphaeropisthus Tliomson (type S. pascuonim Thomson). 



