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



forked. Penis intermediate between that of Ischnura and that 

 of Enallagma. 



Homeoura genus nov. 



Type — Ischnura neops Selys. 



Characters as in Ischnura, but more Enallagmine. Proximal 

 and distal sides of stigmas rounded, costa slightly indent d at 

 stigma. Penis with large lateral paches of spines on the second 

 segment. 



Anomalura genus nov. 



Type — Ischnura prognatha Hagen. 



Characters as in Ischnura, except the apical fork of segment 

 10 in the male is elongated into a spine, the paired spines of the 

 penis are external as in Anomalagrion. 



Nanosura genus nov. 

 Type — Ischnura aurora Braner. 



Characters as in Ischnura, except male with a pair of 

 mesothoracic hook-like horns. 



Amphiallagma genus nov. 

 Type — Enallagma parvum. 



Characters as in Amphiagrion, except post ocular spots 

 present, colors blue and black; body not heavily haired. 



Seychellibasis genus nov. 



Type — Telebasis allaudi Martin. 



Characters as in Teinobasis, except anal plate an male not 

 elongate. Apical lobe of penis linear. 



Palaeobasis genus nov. 



Type — Pyrrhosoma tenellum Vill. 



Characters as in Ceriagrion, except that wings are not 

 petioled to Ac. 



Diceratobasis genus nov. 



Type — Agrion macrogaster Selys. 



Characters as in Metaleptohasis, but male without thoracic 

 horns, while a large pair of horns occur on the seminal vesicle. 



Aceratobasis genus nov. 



Type — Metaleptohasis cornicauda Cf.lvert. 

 Characters as in Metaleptohasis, but male without thoracic 

 horns and his superiors longer than the inferiors. 



