EXPLANATION OF PLATE XX. 
Fic. 17.—Palingenia lata, terminal joints of forceps of male. 
,, 18.—Pahingenia minor ,, 5 fe 
5, 19.—Palingenia robusta ,, - a 
,, 20.—Palingenta robusta ,, =H 3 
21.—Palingenia from Seistan, right fore wing.! 
22.—Palingenia 5 , forceps of male. 
23.—Palingenia ae , terminal joints of forceps of 
male. 
24.—Palingenia picta, male from above.' 
» 25.—Palingenia picta, terminal joints of forceps of male. 
1 The numbers at the ends of the veins are the symbols used by Eaton in his 
monograph. The letters are those used by Comstock in his book on ‘‘ The Wings 
of Insects’’ (see above p. 137). 
