DRAGONFLIES OF NORTH AMERICA 
spine-like dorsal hooks on segments 4 to 7, and long, straight and 
slender, lateral spines on the end of the abdomen. 
The Known Nymphs 
: Lat. | Lat. sp. Lat. sp. - 
Species | Length Eyes Set oor a of 9 Described by 
reaches be- 
eponina 20 rounded | 8-9 of | yond tip of | Ndm.’01, p. 515 
8 inferiors 
17 rounded | 7-8 4 of | reachestip | Ndm. ’01, p. 515 
8 of superiors 
reaches be- 
fasciata 18 pointed 8-9 14-36 | yond tip of | Brtn. ’28, p. 34 
of 8 inferiors 
ornata 15 rounded | 8-9 Yof | as long as Brtn. ’28, p. 34 
8 inferiors 
KEY TO THE SPECIES 
Adults 
Based on Williamson ’22 
Wings with postnodal markings)... 20) 4), See ee 2. 
Wings with no postnodal markings; radial planate subtending one 
Cello. Oh. MAG ee GOA ok RO A eS 5. 
Wing membrane yellow; no brown band beyond stigma........ 
tos Sues NRL a rte ney done Cages oS one eece te ane eee eponina, p. 209 
Wing membrane hyaline; a wits band beyond stigma........ 3. 
Fore wing between nodus and stigma, a rounded spot hardly 
FeAChING COBtAL <8 UE eae Sati renee elisa, p. 210 
Fore wing between nodus and stigma, a brown band spreading 
slong the Costa, 161 Sees A ec ae manly 2 Aid cones eek ee 4. 
Fore wing antenodal brown band barely reaching Cu; H. W. 
pale area in the spot hyaline........... monomelaena, p. 211 
pale area in the spot yellowish.............. fasciata, p. 211 
Fore wing antenodal brown band reaching well beyond Cu; H. W. 
Fore wing 2 cell rows beyond the triangle................... 6. 
Fore wing 3 cell rows beyond the triangle................... ie 
Hind wing two parallel streaks of brown border the basal space, 
(cell M;), the rear one covering the triangle...... martha, p. 212 
Hind wing. The anterior of these basal streaks omitted and the 
posterior interrupted in its middle portion. ...amanda, p. 212 
