66 University of Michigan 



PLATE I 



Wing pliotographs by C. H. Kennedy. 



Figure I, Hctcragrion crythrogastnini, male, Cristalina. Colombia, 

 February 14, 1917. 



Figure 2, Hctcragrion albifrons, male, Reventazon Valley below 

 Juan Vinas, Costa Rica, June 28, 1909, P. P. Calvert. 



Figure 3, Hctcragrion mitratnm, male, Cristalina, Colombia, Feb- 

 ruary 19, 1917. 



Figure 4, Hctcragrion initratuiii, female, Cristalina, Colombia, Feb- 

 ruary 14, 191 7. 



