Dec, 1920] Hitherto Unrecognized Zygoptera 87 



Oxyallagma genus nov. 



Type — Oxyagrion dissidens Selys. 



Characters as in Eyiallagma, except red a dominant color, 

 no postocular spots and penis without lateral basal lobes. 



Africallagma genus nov. 



Type^Enallagma glaiicum Burm. 



Generic characters as in Enallagma, except apex of segment 

 10 in male is elevated into an apical keel, notched at apex. 

 Includes nigridorsum, ohliteratiim and schultzei as described by 

 Ris, "Od. Sudafrika." 



Cyanallagma genus nov. 



Type — Acanthagrion inter r upturn Selys. 



Characters as in Acanthagrion, except the male superior 

 appendages not decurved from the base and are usually forked. 

 Includes laterale, acutum and perhaps cheliferum. 



Archaeallagma genus nov. 



Type — Enallagma ovigerum Calvert. 



Characters as in Enallagma, except that the hind edge of the 

 prothorax with a rectangular lobe. 



Mesamphiagrion genus nov. 



Type — Enallagma occuUum Ris. 



Characters as in Enallagma, but body colors red, apex of 

 segment 10 elevated and notched, body long haired and stigma 

 one-half cell long. Differs from Amphiagrion in male append- 

 ages being Enallagma-like, in postocular spots, in lacking the 

 metasternal tubercles. 



Teleallagma genus nov. 



Type — Telagrion daecki Calvert. 



Characters as in Enallagma, but the pair of subdorsal apical 

 points of segment 10 are widened laterally into minute lobes, 

 abdomen very slender. Wings petioled to Ac. 



Ischnallagma genus nov. 



Type — Ischnura elongata Martin. 



Venation and stigmas as in Ischnura, apex of ten forked, 

 male appendages and penis as in Enallagma. 



Proischnura genus nov. 

 Type — Enallagma subfiircatum Selys. 



Characters as in Enallagma, except stigmas of hind wings 

 smaller than those of front wings. Apex of segment 10 in male 



