ENO OD 0 Can ieoone CY Genus Heropias. 240. Heropias ALBA : : : : : : : : : : Wolk RV PE XX Great Wurre Eorer or Wuire Heron. Quite an accidental visitant, arriving at very uncertain periods. 241, Heropras GArzerra ; : ‘ : : : ‘ 4 : : Vol IVE Rie XOX Lirrite Eerer. This, like the last, is merely a strageler to Britain. Genus Busuucus. 242. Busuxtcus russatus : : : : ; : : Vol. IV. Pl. XXIV. Burr-BackED Heron. An accidental visitor. Genus Bupuus. 243. Buruus comatTus : : : : : : : : Vol. IV. Pl. XXV. Seuacco Heron. The visits of this bird are very infrequent, and its appearance not to be depended upon. Genus Nycricorax. 244. Nycricorax GRISEUS . : ' : : : ; ; : : Vol lV. PE XXXVI. Nicut-Heron. This bird must be considered among our accidental visitors. Genus Boraurus. 245. Boraurus sTELLARIS ; ; e : : 3 : : A : Vole Ve RE XOX Birrern. Formerly a common stationary form in our marshes and fens ; now seldom seen, and mostly in winter. 246. Borarus LENTIGINOSUS . : : : : : : : Vol. IV. Pl. XXVIII. AMERICAN BirTern. The frequent occurrence of this bird in the British Islands demands a place for it in our avifauna; and hence I have given a figure of it. QE