78 University of Michigan 



PLATE VII 



Figures 63 to 66, inclusive, head profiles ; figures 67 to 73, inclusive, 

 female genital valves in profile ; figures 74 to 79, inclusive, male ab- 

 dominal apijendages. Figures 74 to 79, inclusive, drawn by C. H. 

 Kenned}'. 



Figure 63, head profile of Hctcragrion niiti-aluiit. male; figure 64, 

 same of Hctcragrion crythrogastrum, male; figure 65, same of Hctcr- 

 agrion ictcricnm, male; figure 66, same of Oxystigma fyctiolatum, male. 



Figure 67, profile of right genital valve of Hctcragrion majus. 

 female, Cachi, Costa Rica, collection P. P. C. ; figure 68, same of 

 Hctcragrion alicnuin, allotype female ; figure 69, same of Hctcragrion 

 mitratnm, female, Cristalina, Colombia, February 13, 1917; figure 70, 

 same of Hctcragrion simulatum, allotype female; figure 71, same of 

 Hctcragrion erythrogastrum, female, Rio Sardanilla, Canal Zone, De- 

 cember 5, 1916; figure 72, same of Hctcragrion albifrons, female, Tur- 

 rialba, Costa Rica, July 26, 1909, P. P. Calvert ; figure 73, same of 

 Hctcragrion pcrcgrinum, Cristalina, Colombia. February 12, 1917. 



Figures 74 and 75, oblique dorsal and profile views respectively of 

 the abdominal appendages of Hctcragrion ictcricuin, type male; figures 

 76 and 77, same of Hctcragrion melanurum, type male; figures 78 and 

 79, same of Hctcragrion anrantiaciim. State Sao Paulo, Brazil, collec- 

 tion Cornell University. 



