90 NEW YORK STATE MUSEUM 



dd Crossveins near middle of wing 



e Palpi six-jointed; antennae seven-jointed ; wing venation as 



shown on pl.37, fig.21 (Chile) 22. Heptagyia 



ee Palpi four-jointed 



f Antennae of female seven or eight jointed ; male antennae 



four teen- jointed ; wing bare 35. D i a m e s a 



ft Antennae of female with eight joints, the male with nine, 



short-haired .: 36. Eutanypus 



According to the description the female of Eutanypus 

 does not seem to differ from the female of Diamesa. 

 1)1) The M-Cu cross vein absent 



c Wing with four or five very indistinct longitudinal veins ; wing club- 

 shaped, the anterior margin with a long curved seta, the antenna 



with about twelve joints 23. Oorynocera 



cc Wing margin without a long curved seta 



d Probocis and palpi rudimentary ; abdomen shorter than the thorax 



(female apterous) 14. C 1 u n i o 



dd Palpi not rudimentary 



e Antennae with not more than ten joints 

 f Antennae six-jointed 

 g The R-M crossvein, if present, at the basal quarter of the 

 wing 

 h The R-M crossvein near basal quarter of the wing, pl.37, 



fig.l3 (Chile) 24. Spaniotoma 



hh The R-M crossvein coalescent with the longitudinal 

 veins ; wing club-shaped ; the anterior cells thickened, 



pi. 36, fig.7 25. Corynoneura 



gg The R-M crossvein near the middle of the wing 



h Wings hairy ; antennae with the four intermediate joints 

 verticillate with very long hairs ; male unknown 



(Europe) , pl.34, fig.20 26. W u 1 p i e 1 1 a 



hh Wings with margin ciliated ; antennae with sparse ver- 

 ticils of spreading hairs (Kerguelen Island), pl.37, 



fig.l 27. Limnophyes 



ft Antennae with seven to ten joints 



g Antennae with ten joints, not plumose ; costal cell thickened, 



pl.36, fig.7 25. Corynoneura (male) 



gg Antennae with seven or eight joints 



Ji Thorax with a longitudinal fissure; wings black with' 

 white markings, pl.31, fig. 16, and pL27, fig.l6 



28. Ohasmatonotus 

 hh Thorax without this fissure 



i Claws cleft, venation as figured ; antennae seven- jointed 

 in male and female, pl.34, fig.l6 



29. Telmatogeton 



