ARDEIDAZ: HERONS. 655 
in vogue have been successively detached from Ardea, the typical one, with which many 
of them should be reunited. The ‘‘ Night Herons” (Nyctiardea and Nycterodius) differ some- 
Ae = 
Sos 
Le hecars 
Sis 
Fria. 456, — Herons, idealized from Ardea cinerea, (From Michelet.) 
what in shortness and especially stoutness of bill; while the Bitterns (Botawrus and Ardetta), 
the South American genera Tigrisoma, Zebrilus, and a few others, are still better marked. 
