120 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



PLATE 2. 



gs. 1, la. Argia Claussenii. 



gs. 2, 2a. " serva. 



gs. 3, 3 a. " sordida. 



gs. 4, 4 a. " croceipeiinis. 



gs. 5, 6(1. " niodesta. 



gs. 6, 6 a. " tinctipennis. 



gs. 7, la. '•■ tibialis (fontium). 



gs. 8, 8a. " " (binotatum). 



g. 9(7. " dimissa. 



g. 10 fl. " collata. 



gs. 11, 11 a. " thespis. 



gs. 12, 12 a. " ininiunda. 



gs. 13, 13 a. " fissa. 



gs. 14, 14 a. " albistigina. • 



gs. 15, 15a. " putrida (= variety of nioesta). 



gs. 16, 16 a. " concinna. 



gs. 17, 17 a. " lilacina. 



gs. 18, 18 a. " inculta. 



gs. 19, 19 a. " bipunctulata. 



g. 20 a. " reclusa; 20 6, dorsal view of a single superior appendage. 



gs. 21, 21a. " apicalis ; 21/*, end view of a single superior appendage. 



g. 22. Ilyponeura lugens ? "les lames du devant du thora.x " (= niesostigmal 

 laminae of Calvert). 



g. 23. Argia sordida ?, ibid. 



gs. 24, 24 a. Onycliargia atrocyana ; 24 6, end view of same showing the appen- 

 dages of the left side only. 



