THE CANADIAN ENTOMOLOGIST. ' 229 



The group is confined principally to the Neotropical region, no 

 species being known outside of the American faunae — North, Central 

 and South America — Acorduiecera, Say, being the only genus which has 

 been enabled to extend its range into the Palearctic region. 



The larvpe of at least one of the genera is known : Acorduiecera 

 dorsaiis, Say, having been bred and described by Dr. H. G. Dyar.* 



The genera may be easily recognized by the use of the following table: 



Table of Genera. 

 Hind wings with one closed submarginal cell. 



Front wings with four submarginal cells, the second and third each 



receiving a recurrent nervure 2. 



Front wings with three submarginal cells, the first and second 

 each receiving a recurrent nervure. 



Antennae short, 6-jointed ; middle and hind tibiae with lateral 

 spurs Acorduiecera, Say ( = Perantherix, Westw.). 



2. Antennae 8-jointed or more 3. 



Antennae 7-jointed. 



First joint of flagellum not so long as joints 2-3 united ; hind tibiae 

 without a lateral spur, the inner apical spur very 

 long Loboceras, Kirby. 



First joint of flagellum longer than joints 2-3 united ; hind tibiae 

 with a lateral spur Incalia, Cameron. 



3. Antennae 8-jointed ; middle and hind tibiae with lateral 



spurs Paralypia, Cameron. 



Antennae 9-jointed ; middle and hind tibiae without lateral 



spurs Aulacomerus, Spinola. 



Antennae lo-jointed, the third joint about as long as joints 4-5 united, 

 or a little longer, but slenderer ; middle and hind tibial with lateral 



spurs Cerealces, Kirby. 



Subfamily II. — Pterygophorin/E. 

 The credit for this subfamily should be given to Mr. Peter Cameron, 

 who, in his Monograph of the British Phytophagous Hymenoptera, Vol. 

 III., p. 72, remarks as follows: "• Pterygophorus also belongs to a 

 distinct subfamily, which differs both from the LopJiyrina and Perreyina 

 in the lanceolate cell being obsolete. The accessory nervure in the hind 

 wings is also absent ; the latter have only one middle cellule and the 

 anterior are appendiculated." 



*Can. Ent., Vol. XX., 1895, p. 208. 



