142 PROCEEDINGS OF THE NATIONAL MUSEUM. voi., xxiii. 



oxainiiiiition of the head before the species can bo placed, the occiput 

 ill this group being distinctly margined, while in the former it is 

 immargined. The presence of a radius in the hind wings assist some- 

 what in placing these insects, but the character is only of secondary 

 importance since it is absent in some forms. 



Nine genera fall into this tribe, distinguishable b}' the use of the 

 following table: 



TABLE OF GKNERA. 



Kc'cun-c'iit iiLTVure hilcrsdlidl with the fir.st transverse cubitus or receive<l by the _//*•«< 

 cubital cell 2 



Recurrent nervure received by the second cubital cell 9 



2. Marginal cell in front wings completely closed 3 



Marginal cell in front wings open at apex. 



Stigma narrow, lanceolate, the radius originating a little l)eyon(l its middle. 



(1083) A<In,i<>n. Haliday. 



3. Radius originating al or much hcijond the middle of the stigma 5 



Radius originating somewhat before the middle of the stigma. 



Abdomen always broadened at the middle, oval or ol)long-()val 4 



Abdomen sessile sublinear, scarcely broadened at the middle, the second 

 segment longer than the two following miited, the fourth somewhat 

 shorter than the third ( 1084 ) Ounplurenlriitt Kriechbaumer. 



4. Second abdominal segment hv'^/i!. two oblicjue furrows, the hind margin tumid; 



legs short, the femora much swollen. 



(1085) Glyptoculdsles Ashmead, new genus. 



(Type, Glyptocolastes texanus Ashmead, manuscript. ) 



Second al)dominaI segment //v7//o'(/ ol)liqne furrows, the hind inarginnot tumid; 



metanotum with a median carina and a small triangular areola; legs not 



short, slender (1086) Colasies Haliday. 



5. Radius originating from the middle of the stigma or only a little beyond 6 



Radius originating from the last third of the stigma 8 



6. Metanotum with a short mediaji carina, which is usually forked at apex. 



Abdomen in female not compressed at apex, with the hind margins of seg- 

 ments 2 and 3, and sometimes one or more of the following, tumid; 



stigma strongly angulate at the origin of the radius 7 



Abdomen in female compressed at apex, with the hind margin of segnu-nts 

 2 and 3 normal, riot tumid; dorsal segments 1-3 rugulose; stigma not 

 angulate at the origin of the radius (1087) Clinocentrus Haliday. 



7. First abscis.sa of the radius very short, less than half the length of the first 



transverse cubitus (or scarely longer); second abdominal segment very 

 little longer than the first; metathorax with an areola and a petiola area. 



(1088) Onroplumes FOrster. 



First abscissa of radius much longer, fully half the length of the first transverse 



cubitus or longer; second abdominal segment very large, nearly twice 



as long as the first (1089) Epirhyssalus Ashmead, new genus. 



(Tyjie, Epirhysmlus callfornicas Ashmead, manuscript.) 



8. Stigma scarcely angulate at the origin of the radius. 



(1090) Noscrus Forster. 



9. Metathorax areolated, the basal area always complete; radius originating 



beyond the middle of the stigma; hind tibiee in male thick, clavate. 



(1091) i2/«/*'saiMS Haliday. 



Metathorax not areolated; radius originating from the middle of the stigma; 



hind tibi;e in male normal ( 1092) Eurybvlus Ratzeburg. 



1 



