THE CANADIAN ENTOMOLOGIST. 231 



Table of Genera. 



Front wings with two discoidal cells, or at least these are indicated by- 

 fuscous streaks ; antennae 13-jointed. 



Pronotum as long or a little longer than the mesonotum, the 

 latter without parapsidal furrows, but with a grooved line at 

 sides just above the tegulae ; abdomen with 5 visible dorsal 

 segments ; marginal cell open at apex ; discoidal cells usually 

 incomplete, indicated by fuscous 



streaks (1) Mesitiopterus, Ashmead, n. g. 



(Type M. Kahlii, Ashm.) 



Pronotum shorter than the mesonotum, the latter with parapsidal 



furrows ; abdomen with 4 visible segments ; marginal cell 



closed ; discoidal cells distinct (2) Amisega, Cameron. 



(Type A. cuprifrons, Cam.) 



Mesitiopterus Kahlii, n. sp. 



£ .—Length 3 mm. Head and thorax bronzed green, punctate, the 

 metanotum smooth, with a median carina ; scape, pedicel and legs, except 

 the middle and hind coxfe, rufous ; abdomen black, the first segment at 

 apex and the large second segment, except at apex, minutely punctate. 

 Wings hyaline, the subcostal vein and the stigma brown-black, the other 

 veins testaceous ; the venation is as in the Bethylid genus Mesitius, 

 Spinola, and is also much as in Clefites, Latr.; there are two indistinct 

 discoidal cells represented by slight fuscous streaks. 



Type. — Cat. No. 6343, U. S. N. M (Ashmead collection). 



Hab. — Kansas, Lawrence. Taken by Mr. Hugo Kahl, July 7, 1S96. 



Mesitiopterus Townsendi, n. sp. 



£ . — Length 2 mm. Head and thorax aeneous black, punctate ; 

 scape of antennae obclavate, aeneous black, the flagellum dull black ; tips 

 of front and middle tibise and their tarsi, except at apex, testaceous, the 

 hind tarsi fuscous, testaceous basally and beneath. Abdomen aeneous 

 black, punctured very nearly as in M. Kahlii. Wings subhyaline, hyaline 

 basally, the venation as in previous species. 



Type.— Cat. No. 6344, U. S. N. M (Ashmead collection). 



Hab. — Mexico, San Rafael, Jicoltepec (Prof. Tyler Townsend;. 



