86 The Ohio Journal of Science [Vol. XXI, No. 2, 



Neoerythromma genus nov. 

 Type — Enallagma cultellatum Selys. 



Penis characters as in Erythromma, but male appendages 

 resembling those in E?iallagma signatum. 



Psenderythromma genus nov. 



Type — Erythromma viridiilum Charp. 



Like Erythromma except male appendages Psendagrion-Xiko. 

 and wing with only 10-11 postnodals and 3 antenodal ultra- 

 quadrilateral cells. 



Austrocoenagrion genus nov. 

 Type — Coenagrion lyelli Tilly. 



Like Coenagrion except penis with shaft spines and the 

 internal soft fold hood-like. Venation not studied. 



Hawaiiagrion genus nov. 



Type — Megalagrion {Coenagrion) xanthomelas Selys. 



Characters as in Coe?iagrion , but colors are reds and yellows, 

 and the male appendages are Psendagrio7i-\ike. Includes 

 deceptor, calUphya, nigrohamatiim, vagabundiim, molokaiense, 

 microdemas and others. 



Kilauagrion genus nov. 



Type — Megalagrion {Coenagrion) nesiotes Perkins. 

 Generic characters as in Hawaiiagrion, except that the male 

 superiors are long and forcipate. 



Oahuagrion genus nov. 



Type — Megalagrion {Coenagrion) oahiiense Blackburn. 



Generic characters as in Hawaiiagrion, except that the 

 stigma in hind wing of male is placed one and a half times as far 

 from the wing apex as is the stigma of the front wing, slightly 

 less so in the female. 



Apanisagrion genus nov. 



Type — Anisagrion lais Selys. 



Characters as in Anisagrion, except that the wing is not 

 petioled to Ac by a distance equal to the length of Ac and the 

 apex of segment 10 in the male is not forked. 



Protallagma genus nov. 



Type — Amphiagrion titcaccB Calvert. 



Characters as in Enallagma, except that the colors are 

 largely red and the apex of segment 10 in the male is merely 

 notched; i. e., without the two tubercles. 



