162 



THE CANADIAN ENTOMOLOGIST. 



Marginal cell at apex pointed, or at least not distinctly truncate ; 

 mesopleura rounded, not sharply margined anteriorly ; lateral ocelli 

 as near or nearer to the front ocellus than to the eye margin ; clypeus 



simple in both sexes (2) Belomicrus, Costa. 



Marginal cell at apex distinctly truncate ; mesopleura sharply 

 margined anteriorly ; lateral ocelli usually nearer to the eye margin 

 than to the front ocellus. 



Mandibles wit]i a median tooth within ; postscutellar spine acute 

 or bluntly rounded at apex, never emarginate ; clypeus in 9 



truncate, in ^ tridentate (3) Oxybelus, Latreille. 



Mandibles ivitJiout a median tooth within ; postscutellar spine 

 long, broad and always emarginate at apex ; clypeus in 9 

 truncate, '\n$ 4- or 5-dentate (4) Notoglossa, Dahlbom. 



The North American species will fall in the following genera : 



(i) OxYBELOMORPHA, Brauus. 

 None. 



(2) Belomicrus, Costa. 



(i) B. Forbesii, Robt. 



(2) B. cladothricis, Ckll. 



(3) B. argenteospilus. Cam. 



(3) Oxybelus, Latreille. 



(i) O. uniglumis, Linn. 



(2) O. quadrinotatus, Say. 



(3) 0. similis, Cress. 



(4) O- quadricolor, Ckll. et B. 



(5) O. subulatup, Robt. 



(6) O. cornutus, Robt. 



(7) O. subcornutus, Ckll. 



(8) O. punctatus. Baker. 



(9) O. rejectus, Bak. 



(10) O. striatus, Bak. 



(11) O. Packardii, Robt. 



(12) O. sericeus, Robt. 



(13) O. laetus. Say. 



(14) O. fulvipes, Robb. 



(15) O. niger, Robb. 



(16) O. Cressonii, Robt. 



(17) O. heterolepis, Ckll. et B. 



(18) O. dejectus, Ckll. et B. 



(19) O. acutus, Bak. 



(20) O. Robertsonii, Bak. 



(21) O. varicoloratus, Bak. 



(22) O. hirsutus, Bak. 

 (4) Notoglossa, Dahlbom. 



(i) N. mexicanus, Robb. 



(2) NT. bugabensis. Cam. 



(3) N. longispina, Cam. 



(4) N. azteca, Cam. 



, (5) N. sparidens, Ckll. 



(6) N. Cockerellii, Bak. 



(7) N. trifidus, Ckll. et B.* 



(8) N. dilutus, Bak. 



(9) N. intermedius, Bak. 



(10) N. emarginatus, Say. 



(11) N. coloradensis, Bak, 



(12) N. abdominalis, Bak. 



(13) N. frontalis, Robb. 



" This is founded upon a mutilated specimen, having the squama brol<en so as to 

 appear tritid. 



