THE CANADIAN ENTOMOLOGIST. 201 



1903. Methocinae, Subfamily {partim), Andre; Wytsman's Gen. 

 Ins. Fam., Mutillid:*, p. 6. 



1903. Myrmosin^e, Subfamily (^/(^/Ymyl, Andre ; Opus. Cit , p. 12. 



1903. Mutillinse, Subfamily (partini), Andre ; Opus. Cit., p. 13. 



To this subfamily belong the majority of the known genera and 

 species falling in the family Myrmosidce. It is easily separated from the 

 Bradynobaenince by the shape of the thorax in the females and by the 

 armature and venation of the males. The group comes closest to Andre's 

 subfamily Apterogynince, but may be easily distinguished from it by the 

 absence of a strong constriction between the second and third abdominal 

 segments, and by the totally different venation of the front wings. 



Two distinct tribes may be recognized as follows : 



Table of Tribes. 



Females r . 



Males 2. 



1. Ocelli present Tribe I. — Myrmosini. 



Ocelli absent Tribe II. — Chyphotini. 



2. Front wings with ihe marginal cell long, or not especially short ; 



hypopygium unarmed Tribe I. — Myrmosini. 



Front wings with the marginal cell usually short ; hypopygium armed 



with an aculeus which curves upwards.. ..Tribe II. — Chyphotini. 



Tribe I. — Myrmosini. 



The females in this tribe resemble those belonging to the family 



Muti/lidce, but are easily recognized by having the thorax divided into 



iiuo distinct divisions, and from the tribe Chyphotini by having distinct 



oCelli. 



The males are easily distinguished by having the hypopygium 



unarmed. 



Table of Genera. 



Females i . 



Males 2. 



I. Thorax quadrangular, the pronotdm as wide as the meso-metathorax, 

 usually rugoso-punctate, or coarsely punctate ; maxillary palpi 



6-jointed, labial palpi 4-jointed Myrmosa, Latreille. 



(Type Mutilla aielanocephala, Fabr.) 



Thorax not quadrangular, compressed at the sides from the meso- 



metathoracic angles ; mandibles strongly excised beneath, with a 



projection towards base Ephutomma, Ashmead. 



(Type Mutilla incerta, Radoszk.) 



