THE CANADIAN ENTOMOLOGIST 269 



with 26-jointed antennae, since these genera differ so widely in antennal 

 characters from others in the group, and apparently emphasize the 

 affinities between these wasps. 



Table of Subfamilies. 



Wingless forms 3. 



Winged, the hind wings with a lube at base; front wings with one or 

 two basal cells. 



Head not oblong 2. 



Head oblong. 



Antenna? inserted at the clypeus, usually 12- or 13-jointed, 

 rarely 23- or 26-jointed ; front femora usually more or less 

 swollen Subfamily I. — Bethylinae. 



2. Head globose or rounded; front wings with a lanceolate stigma; front 



tarsi in ? never chelate; antennas in V 13-jointed, in ^ 10- 



jointed Subfamily II. — Emboleminfe. 



Head transverse or subquadrate ; front wings usually with a large 

 stigma; front tarsi in ? frequently chelate; antennae 10-jointed in 

 both sexes .... Subfamily III. — Dryininse. 



3. Front femora much swollen. 



Head oblong; antenna? usually 12- or 13-jointed, alike in both 



sexes, rarely 23-26-jointed I. — Bethylinae 



Head transverse or subquadrate, or globose. 



Head globose; antenna? in $ 13-jointed; front tarsi 



normal II. — Emboleminae. 



Head transverse or subquadrate; antenna 1 10 jointed; front 

 tarsi in 9 chelate III. — Dryininae. 



Subfamily I. — Bethylinae. 

 This subfamily may be divided into two very distinct tribes : 



Table of Tribes. 



Antennse 23- to 26-jointed Tribe I. — Sclerogibbini. 



Antennae 12- to 13-jointed Tribe II. — Bethylini. 



Tribe I. — Sclerogibbini. 

 In this tribe only two genera are known, and they are easily 

 recognized from other Bethylids by the multiarticulated antennae, the 

 antennse being 23- or 26 jointed. In the Bethylini the antenme are never 

 more than 13-jointed. 



