ARDEIDH3 — THE HERONS — DICHROMANASSA. 
33 
The very great difference in form between Demiegretta and the present genus may be more clearly 
shown by the statement that while the bill and wing, as well as the general bulk, are nearly the 
same in the two, Demiegretta has the tarsus about 2.75 instead of 5.80 inches long, the middle toe 
2.10 instead of 2.80, and the bare portion of the tibia 1.20 instead of 3.50 ! It will thus be seen 
D. rufa. 
that the proportions are entirely different in the two forms. The bill of Demiegretta is also very 
much more obtuse than that of Dichromanassa. 
Demiegretta novce-hollandim (Lath.) is of more slender build than the type-species, and is scarcely 
strictly congeneric ; but it is otherwise similar, especially in the character of the plumage. The 
bill is more slender, approaching in form that of Hydranassa, but still different ; the legs are also 
more elongated, but are decidedly less so than in the genus under consideration. 
Dichromanassa rufa.^ 
THE REDDISH EGRET; PE ALE’S EGRET. 
a. Colored phase. 
L' Aigrette rousse, de la Louisiane, Buff. PI. Enl. 1777-1784, pi. 902 (adult). 
Arden rufa, Bodd. Tabl. P. E. 1783, 54 (based on PI. Eid. 902). — Coues, Key, 1872, 268 ; Check 
List, 1873, no. 455. — Reichenow, J. f. O. 1877, 269. 
Demiegretta rufa, Baird, Birds N. Am. 1858, 662 ; Cat. N. Am. B. 1859, no. 483. 
Dichromanassa rufa, Ridgw. Bull. U. S. Geol. & Geog. Surv. Terr. IV. no. 1, 1878, 236 (in text). — 
Coues, Check List, 2d ed. 1882, no. 661. 
Reddish Egret, Lath. Synop. III. 1785, 88 (quotes PI. Enl. 902). 
Ardca rufcscens, Gmel. S. N. I. ii. 1788, 628, no. 33 (based on PL Enl. 902). — Aud. Orn. Biog. 111. 
1835, 411 ; V. 1839, 604, pi. 256 ; Birds Am. VI. 1843, 139, pi. 371 (adult ; both phases). 
Ardca cubensis, “Gundl. MSS.” Lemb. Aves de Cuba, 1850, 84, pi. 13, iig. 1 (young). 
Ardca rufa, var. Pcalei, Reichenow, J. f. O. 1877, 270. 
b. lVhitc phase. 
Ardca Pcalei, BoNAr. Am. Lyc. N. Y. II. 1826, 154.- — Nutt. Man. II. 1834, 49. 
Demiegretta Pcalei, Baird, B. N. Am. 1858, 661 ; Cat. N. Am. B. 1859, no. 182. 
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