March, 1903.'] ASHMEAD : CLASSIFICATION OF PrOCTOTRYPOIDEA. 31 



7. Apterous forms 8 



Winged 12 



8. Head large and flat, more or less quadrate ; ocelli wanting 9 



Head sometimes large, but quite diflerently shaped ; ocelli sometimes present.. Ii 



9. Legs normal, not short and stout ; scape of antenncie not dilated lo 



Legs short and stout ; scape of antenn;v dilated, tlat ...Platymischus lVest7vooa 



(tyjic /'. dHatalns Wkstw. ). 



10. Head oblong, full behind the eyes, scutellum indistinctly separated ; antennae 



long, the flagellum suhclavate, the first three or four joints not short. 



Platymischoides Ashmeod (type P. molokaiensis AsiiM. ). 



11. Thora.x elongate and much narrowed, compressed; head of an abnormal shape, 



and compressed, seen from above it is longer than wide but hardly wider than 

 the thorax, seen from the side it is much shorter than high, t!ie smaH eyes 



being placed low down near the anterior margin Zacranium Ashmead 



(type Z. o/iui'Hsis Ashm. ). 



12. Front wings without a basal nervure 1 3 



F'ront wings with a basal nervure 



Mesonotum without furrows ; club of antenna; 3- or 4-iointed. 



LoxOtropa Fdister (type Z. acolutha Fd'.RST. ). 



13. Mesonotum without furrows. 



Scutellum normal, not ending in a spine 14 



Scutellum ending in a distinct spine Acanthopria Ashinead 



(type ./. crassiconiis AsHM. ). 



14. Head transverse or subglobose 15 



Head large, viewed from above pentagonal, the ocelli present ; mesonotum with- 

 out furrows; antenna; ending in a 5-jointed club, the funicle joints slender, 

 subcylindrical, at least twice longer than thick Tetramopria Wasmann 



(type T. nttrocincta Wasm.). 



15. Scutellum not foveate at base 18 



Scutellum foveate at ba.se. 



Tip of scutellum rounded or truncate, not compressed from the sides, ecari- 

 nate 16 



Tip of scutellum compressed from the sides the sides, the disk or apex with 

 a median carina ; abdomen usually conically pointed. 



Tropidopria Ashmead (tyjje Diapria conica Faur.). 



16. Last joint of antenna; quite differently formed 17 



Last joint of antenn;!? enormously enlarged, oblong-oval. 



Megaplastopria Ashm. g. nov. (type M. brasilii-nis AsHM. ). 



17. Abdominal jieliole much longer than thick ; metathorax always with a distinct 



ridge or conic prominence at base. 



Diapria I.alreille (type Diapria verticillala Latr.). 

 Abdominal petiole not longer than thick, densely woolly ; metathorax most fre- 

 quently without a conic prominence at base, usually areolated. 

 Antennal club 3 -jointed.. Ceratopria Ashmead (type C. /on^'iror/r is Ashm.). 



Antennal club 4- or 5-jointed Trichopria Ashmead 



( typo T. peiitaplasta AsHM. ) . 



