180 WILLIAM II. ASHMKAI). 



Tribe I. Mi/r))i(isiin. 



TABLE OF GENERA. 



FEMALES. 



Body nisjose, the thorax di vidcMl into two parts ^lyriliosa Latr. 



Body smooth, tlie tliorax divided into three parts ^etlioca Latr. 



MALES. 

 Apex of alidonieii unarmed ; fi'ont winois with four siihmartjinal cells, the first 

 recurrent nervure joiiiinp; the second submarginal cell before its middle; 

 cubitus of hind wing interstitial with the transverse median nervure. 



Myrniosa Latr. 

 A])ex of abdomen armed with a curved spine; front win^s with only three sub- 

 marginal cells by the obliteration of the first transverse cubital nervure 

 the first and second submarginal cells therefore confluent; cubitus of 

 hind wing not interstitial with tlie transverse median nervure. 



Metliova Latr. 



Ti-il)e II. MutUlmi. 



TABLE OP GENERA. 



FEMALES. 

 Eyes ovate. 



Mandibles 3-dentate Uliitilla Linn. 



Mandibles -^-dentate Sinicroinyriiie Thoms.® 



Eyes round. 



Mandibles falcate or nearly so, crossing each other at ti])s with a small tooth 

 within some distance from apex Spliscroplillialiua Blake. 



MA LE8. 

 Eyes reniform. 



Mandibles 3-dentate ]VIiitilIa Linn. 



Mandibles -i-dentate Sinicroinyi'ino Thoms.* 



Eyes round. 



Anterior wings with two siil)marginal and two discoidal cells, the m-irginal cell 

 not truncate at tip. 



Mandibles hidentate at tii)s PiseiKloinolliOCa Ashm. n. g. 



Anterior wings with three submarginal and three discoidal cells, the marginal 

 cell truncate at tip. 

 Ocelli small ; mandibles long, falcate, crossing each other at tii)s, with a small 

 tooth within some distance from apex- . .Splia'roplif lialiiia Blake. 

 Ocelli large; mandibles strongly curved, truncjiti' and ;^dcntate at apex. 



I'llOtopNis Blake. 



Tribe III. (\ii/>/iotim. 



TABLE OF GENERA. 



FEMALES. 



Middle tarsi with one si)ur Bi'a<*hyei!«tes Fox. 



Middle tibiae with two spurs. 



Thorax divided into two parts, the abdomen with a long, slender petiole; man- 

 dibles bidentate Cypltotes Blake. 



* To this genus belong most, if not all, our species now- jilaced in the genus Mntilla. 



