NEUROPTERA— ODONATA— AGRIONINA. 



127 



Hgea, A. leucosia, and A. peisinoe,' all of Heer and from Oeningen, and 

 probably A. iris Heer of Oeningen; a closer determination is perhaps impos- 

 sible. Into it also fall Lestes vicina Hagen from Sieblos, which appears to 

 be a Lestes in the narrowest sense, and Agrion (Steropc) parthenope Heer 

 from Oeningen, which is either a Sympycna or exceedingly close to it. 

 The legion next best represented is Platycnemis, since to the subgenus 

 Platycnemis Agrion antiquum Hagen from amber and Agrion icarus Hagen 

 from Rott pretty certainly belong. Finally, to the legion Agrion belongs 

 Agrion aglaope Heer from Oeningen. 



In America, on the other hand, the bulk of the species fall in the legion 

 Podagrion, viz, Dysagrion fredericii, D. lakcvsii, and D. packardii of Green 

 River, Podagrion abortivum from the same, and Lithagrion hyaliiuini and 

 L. umbratum from Florissant. The other two species fall in the legion 

 Agrion, viz, Agrion mascescens and A. exsularis. 



The following table will show the distribution of recent and fossil spe- 

 cies in Europe and North America : 



Concerning the present distribution of these "legions," it may be said 

 that Pseudostigma belongs to tropical America, Podagrion and Protoneura 

 to the tropics and South Africa, Platycnemis to the Old World, and that 

 Lestes and Agrion are cosmopolitan. The cosmopolitan groups and the 

 one confined to the Old World are those, and the only ones, represented in 

 the European Tertiaries ; while one of the cosmopolitan genera well repre- 



' Hagen considered these as uioet nearly allied to the specios for which Selys has since estab- 

 lished the geuus Chlorolestes in the legion Podagrion, but to judge from the origin of the median and 

 subnodal sectors they certainly belong in Lestes. 



