MONOORAril OF THE NORTH amkkhan proctotrypid.e. 23 



TrilMi 2.— OxYiiRA. 



/. Tiliin' iiiiticiu oalcarl iiiii«i>. 

 (J. Maiuinmlii' oilvntiilii-. 



Fmii. m. — rrorloirupidir. 



ijij. Miiiiililtulii- ilciiliitic. 

 /(. AImIoiihmi /(•»•. longiKHiiimiii, lilironin\ iirtiruliitniu. 



Fain. i>. — I'eleviniilif. 



Iili. Af>iliiiii«vii )>«iti<)latiiiii, iiiiiiiai'){inatuiii. 



Fain. 11. — IHapriathf. 



hhh. Al>iloiii«n inar^iiiatiitii, siiUhesMilt) atit Kiiliit»'tiolatiiiii. 



i'aiii. 1L'. — Stclionida: 



ff. Tiliiiii aiiticii) bitalrarata'. 



Fain . 1 \\. — Certiph ron iiUv. 



„ • * » • • •. 



Trihe I. — llnUicoplera. 



/. ( >H ('iialitatnni. Alii- annnstissinia', ncrvo lirevjHsinio. 



Faiii 1 7. — MiimarUhr. 



Stirjm I. — Avideutit. 

 c. Antonna- ntriustjiie hoxus artifuliN codi'm niuncro. IVdes miblipveH. Aire poati- 

 ca) inrisa-. 



Tribe 6. — ('ennptera. 



d. Antenna? lO-artirnlata'. Caput dotlexuni. 



Fani 1!). — Dryinido-. 

 dd, AutennaD 12-13-arti<iilata'. C.a]»nt ])(>iTe(;tnni. Hapacia. Larvjo entomo- 

 pliag.i>. 



Fam 'M.—IlethyUidw. 



C'brysiilis inilo connexi, biuc ScoUadin. 



It will be seen from the above "scheme of arrangement" that Hal- 

 iday widely separates some closely allied gronps, interpolating other 

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

 quaintance with 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 proi)erly united them as one, under the 

 name Pioctotrupidie, lie then separates the family into six subfam- 

 ilies, as follows: 



(1) Mymaridks. Head transverse aroolat« ; anteuniP inserted above the middle of 



the face, ,? long, sleuder, and elbowed, 2 clavate; mouth destitute of palpi; 

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



(2) Platvgasterides, Abdomen sessile, depressed, first segment not campanulate; 



autenuin elbowed, 10-12-jointed, inserted near the mouth. 



(3) Ceuaphuontides. Abdomen siibsessile, campanulate, terminal and ventral seg- 



ments carinated; antenna; elbowed, inserted near the mouth; wings nearly 

 exareolate. 



