ART. 20. ICHNEUMOlSr-FLIES OF TRIBE PANISCINI CUSHMAN. 9 



only the third tergite entirely red, the first, second, and fourth 

 bicolored. 



This species is very closely allied to, perhaps synonymous with, 

 the European Protarchus rufus (Gravenhorst) . 



Genus PROTARCHOIDES Cushman. 



Protarchoides Cushman, Proc. U. S. Nat. Miis., vol. 61, art. 8, 1922, p. 25. 



At once distinguished from Protarchus Foerster by its compressed 

 hind tibiae and tarsi, short hind calcaria and apical tarsal joint, 

 shallowly concave frons without tubercles, and short, shallow notauli. 



Fig. 3.— protarchoides mandibularis cushman, female. 

 PROTARCHOIDES MANDIBULARIS, new species. 



Very close to, and possibly synonymous with the genotype, longipes 

 Cushman, but differing as follows: 



Female. — Length 17 mm.; antennae 17 mm. 



Mandibles and palpi largely yellow; antennae paler; clypeus 

 piceous; pronotum with a rather deep impression along posterior 



