MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 23 



Tiibo 2. — OxYURA. 



/. Tibiic auticie calcari iinico. 

 (J. Mandibula' edeiituLi'. 



Fam. 1(*. — Proctoinipiihr. 



(/(/. !Mandibul;i' (lentatiiT'. 

 /(. Abdomen _/('»i. longissiinum, lililornie, articulatum. 

 Fam. 9. — relecln i<hi\ 

 Jill. Abdomen petiolatiim, immarginatiim. 

 Fam. 11. — Diapriadn. 

 hhh. Abdomen marginatum, subsessile aut sulipetiolatum. 

 Fam. 12. — ScclionUlce. 



jf. TibijTB auticio bicalcaratre. 



Fam. l.S. — Ceraphron'uhv. 



4f » ^ * - » # 



Tribe 4. — Ilalficojjtera. 



# # a ■!v ^ * * 



ff. Oh epalpatura. A1:b angustissima", nerve brevissimo. 

 Fam 17. — Mi/marldn'. 



Stirps i.—Aciileaf((. 

 c. AutenniB utriusijne sexns articnlis codem luimero. Pedes siibljBvea. Alic posti- 

 cie iucisa'. 



Tribe (>. — Ccnoptera. 

 d. Antenna^ lO-articulata'. Caput dollexum. 

 Fam 19. — Bryinidiv. 

 dd. Antennfe. 12-13-articulata'. Caput porrectum. Rapacia. Larv.« entomo- 

 pliagai. 



Fam 20.— Beihi/Uida;. 



Clirysidis inde conuexi, hinc Scoliadis. 



It will be seen from tlie above "scheme of arrangemeut" tbat Hal- 

 iday widely separates some closely allied groups, interpolating other 

 families between them; and, moreover, with our larger and better ac- 

 quaintance Avith these groups, the arrangement is unnatural and the 

 characters he has employed, in defining them, will not now always 

 hold good. 



About the same time. 1840, Prof. Westwood, in his memorable work, 

 " Introduction to the Modern Classification of Insects," brought all of 

 these families together and properly united them as one, under the 

 name Proctotrupida;. He then separates the family into six subfam- 

 ilies, as follows: 



(1) Myi\rARiDKS. Head transverse areolate; antenna', inserted above the middle of 



the face, (? long, slender, and elbowed, $ clavate; mouth destitute of palpi; 

 wings narrowed, densely ciliated, with a very short subcostal nerve. 



(2) Platygasteridks. Abdomen sessile, depressed, lirst segment not campanulate; 



antenna^ elbowed, 10-12-J()inted, inserted near the mouth. 



(3) Ceuaphijontidks. Abdomen subsessile, campanulate, terminal and ventral seg- 



ments cariuated; autenuie elbowed, inserted near the mouth; wings nearly 

 exareolate. 



