MAY KI.IKS AND M incus OF NEW YOKK 0.> 



/,/, Media present - (X y I o c r y p t a 1 ) 



/ Femora unarmed 8. C e r a t o I o p h u s 



II Some of all the femora spinose beneath 



9. P a 1 p o in y i a 



in Neither fore nor bind femora thickened 2 

 n Having hairy soles (plantae) 



1. Subgeuus A 1 a s i o n 



//// Having spiuose soles (plantae), pi. 17, fig.10 

 2. Subgenus Sphaeromyas 

 in /n Either fore or bind femora tbickened 



11 Hind femora thickened, spinose beneath 



3. Subgeuus S e r r o in y i a 

 mi Fore femora thickened, pi. 37, fig.9 



4. Subgenus Heteromyia 



iiif Tburax produced over the head; legs usually quite long; 

 antenna of tbe male usually with fourteen joints ; tbat of 

 the female with seven joints. (Go hack to ii following /, 

 29 Telinatogetoii, page 90, and read through to 

 qq, Metriocne m u s) 



KEY TO GENERA OF THE NORTH AMERICAN CHIRONOMIDAE 



Wings rudimentary (Pacific coast), pi. 35, figs. 15 to 24 



11. E r e t m o p t e r a 

 a a Wings present 



l> The M-Cu erossvein present, pi. 37, fig.24 



c Antennae with fifteen joints ; both in the male and the female tbe 

 a I ma 1 joint oval, pi. 27. (Go back to the Group Tanypus, 

 f, p. 89, of the preceding key.) 

 CC Antennae with fourteen or fewer joints, when the" apical joint is 



oval then antenna with fewer than ten joints 



i! Antenna of the male with fourteen joints, the apical joint very 

 long and cylindrical ; antenna of tbe female with seven or eight 

 joints ; fourth tarsal joint obcordate ; wings bare, pl.30, fig.13 



35. D i a in e s a 



'/</ Antenna of male with nine joints, short haired ; antenna of female 

 with eight joints. The female does not appear to differ from 



1 > i a in e s a 30. E u t a u y p u s 



lilt The M Cu erussvein absent 



c Wing club-shaped, the costal cell thickened, pl.SG, fig.7 ; antenna of 

 male with ten, the female with six joints. .25. Go r y n o n e u r a 

 " Not as above 



/ Thorax with a longitudinal fissure ; wings black with white mark- 

 ings: antennae seven-jointed in male and female, pi. 27, fig.10, 

 and pi. .'"51, lig.K! 28. Chasmatonotus 



'This division is called Genus P a 1 p o m y i a l.y Kieffer (1902). 

 "This division is called Subgenus P a 1 p o in y i a by Kieffer. 



