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 



ff 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 ofDiamesa. 

 7;& 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. Corynocera 



CG 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.13 (Chile) \.24. Spaniotoma 



hh The R-M crossvein coalescent with the longitudinal 

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



pl.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 



ff 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 



h Thorax with a longitudinal fissure; wings black with 

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



28. Chasmatonotus 

 hh Thorax without this fissure 



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

 . in male and female, pl.34, fig.16 



29. Telmatogeton 



