THE CANADIAN ENTOMOLOGIST. 41 



9. Three cubital cells, the second not longer than the 



third Paratiphia, Sichel. 



Two cubital cells, the second very transverse Tiphia, Fabricius. 



Family XXXVIIL— Cosilid*. 

 This family is based upon the genus Cosi/a, Gue'rin, described in 

 1839 from Chile. The affinities are most perplexing, although apparently 

 closely allied to the Myzinidcp., Scoliid(z and Tiphiidce. The middle coxae, 

 however, are much closer together than in those families ; the eyes in both 

 sexes are etitire, not eniarginate within ; the venation of the wings, too, 

 is different, while the male genitalia is quite characteristic and totally 

 different from that in the families mentioned. In having the eyes entire 

 in both sexes, it agrees with the family Tiphiid(Z, but may be easily 

 separated by coxal characters, by venation and by the unarmed hypopy- 

 gium of the males. 



I have also placed in this family the genus Fedtschenkia, Saussure, 

 unknown to me in nature. Both Saussure and Andre', however, place it 

 with the Mutillidiv, and Mr. Ernest Andre has even gone so far as to 

 make it the type of a subfamily — the Fedtschenkiince. My reason for 

 differing from these eminent authorities is that the female is winged, while 

 all known females in the Thynnido', Myrmosidce. and MutillidiE are 

 always wingless, never winged. The abdomen in the male, too, is unarmed 

 and totally unlike that in the Mutillidce and allied families, a most 

 important character, which, in my opinion, is sufficient to exclude it from 

 any of those families. 



Table of Genera. 



1. Front wings with two cubital cells 2. 



Front wings with three cubital cells 3. 



2. First cubital cell about thrice as long as the second, receiving the first 



recurrent nervure at its apical third ; pronolum shorter than the 

 mesonotum ; scutellum ivith lateral keels ; metathorax striate, the 



sides toothed • • Nursea, Cameron. 



(Type N. carinata, Cam.) 

 First cubital cell about twice as long as the second, receiving the first 

 recurrent a little beyond its middle ; submedian cell slightly shorter 

 than the median ; pronotum not shorter than the mesonotum ; 

 parapsidal furrows distinct ; scutellum without lateral keels ; meta- 

 thorax not striate, but with a delicate median keel and keeled at 

 sides, the spiracles small, rounded ; abdomen fusiform, with a 



