12U PROCEEDTXnS OF THE NATIONAL MUSEr.V. voi..xxiii. 



The liToup. taken as a whole, attack wood-l)()riiio- coleopterous 

 larva?. 



Seven genera belong to the tribe, two of which are found in the 

 Tropics. 



TABLE OP GENERA. 



Abdomen attached to the metathorax normally 2 



Abdomen attached to the metathorax far (thove the hind coxte 7 



2. Hind femora l)eneath with one or more teeth 3 



Hind femora beneath simple, unarmed 4 



3. Hind femora beneath armed with many small teeth; recurrent nervure joining 



the second cubital cell (932) Emcelinus Westwood. 



Hind femora beneath armed with one tooth; recurrent nervure joining the first 

 cubital cell (933) Helcun Nees. 



4. Recurrent nervure joining the first cubital cell. 



Second cubital cell longer than wide; clypeus at apex truncate 5 



Second cubital cell not longer than wide; clypeus at apex rounded 6 



5. Basal joint of hind tarsi not longer than joints 2-4 united; median cell in hind 



wings not shorter than the costal cell (934) Gymnoscelh F(")rster. 



Basal joint of hind tarsi longer than joints 2-1 united; median cell in hind 

 wings much shorter than the costal cell. 



(935) Einiian'ocniirits Ashmead, new genus. 

 (Type, Gifmno!^rell>< americana Cresson. ) 

 r>. Submedian and median cells of an equal length; second cubital cell petioiate 

 and a little shorter along the radius than along the cubitus. 



(9.36) A.'tpicolpus Wesmael. 

 Submedian cell distinctly longer than the median; second cubital cell sessile or 

 subsessile, longer along the radius than along the cul)itus. 



(937) SchauhiMandin Ashmead, new genus. 

 (Type, Schanindandhi femorata Ashmead, manuscript. ) 

 7. Recurrent nervure interstitial or joining tlie first cubital cell; first discoidal cell 

 largely petioiate; second cubital cell not large. 



(938) Cenoccelms Haliday. 



Tribe II. DIOSPILINI. 



1862. Diospiloidw, Family 23, Forstek, Verb. il. naturh. Ver. jir. Rheinl., XIX, 

 pp. 229 and 257. 



1887. Diospilhur, Subfamily, Cresson, Syn. Hym. North America, p. 61. 



1888. Dio-^pilidw, Tribe XXI, Marshall, Species des Hym.des Braconides, I, 

 p. 67. 



This tribe is usually treated as a distinct sul)family, as the bibliog- 

 raphy shows, but it is too closely allied to the geiuiine Helconines 

 to retain such a rank and it is here reduced to tribal value. It is 

 scarcely separat)le from the ILJconini., and 1 should not be surprised 

 to tind that the characters I have used to separate it from that tribe 

 will prove valueless with new discoveries. 



The Rev. T. A. Marshall treats Taphwu.^ Wesmael as a synonym 

 of Diospilus Haliday, but 1 agree with Thom.son in believing both 

 good genera. 



