a 
354 ON THE CLASSIFICATION OF BIRDS. 
A. cinerea. Selby, ii. pl. 2. palliata. Spix, pl. 90. 
Herodias. Wil. 65. f. 2. pacifica, Il]. Orn. pl. 90. — 
Egretta, Brisson. Egrets.* (fig. 307. b) Bill more 
slender : the culmen inclining towards the tip, and ben 
downwards: the commissure slightly gaping towards 
the end; the margins serrated: the gonys short, 
slender, and not ascending. Scapular feathers (typi- 
cally) very long, and divided into detached filaments, 
Legs long. Inner toe shorter than the outer. f 
E. Americana. Wil. 61. f.4. czrulea. Wil. 62. f. 3. 
alba. Nauman, 46. f. 91. nigerrima. Wagler, 22. ? 
flavirostris. Wagler, 9. Ludoviciana. Wilson, 64. f. 1. 
Garzetta. Auctorum. * Aberrant, leading to Butor. 
candidissima. Wil.62. f.4. scapularis. Pl. Enl. 908. Part 
russata. Pl. Enl. 910. 5. No. 155. 
comata. Selby, ii. pl. 6. virescens. Part 5. No. 156. — 
Agami. Pl. Enl. 859. Javanica. Ib. No. 158. | 
gularis. West. Af. ii. thalassina. Ib. No. 157. 
unicolor. Ib. ii. plumbea. Ib. No. 159. 
Butor, Antiq. Bitterns. Bill as in Ardea. Face 
naked. Legs almost or quite feathered to the knees. 
Inner toe considerably longer than the outer. Claws 
long, slender, very slightly curved (fig. 307.¢). An- 
terior scales transverse. ‘The grallatorial type. 
B. stellaris Selby, ii. pl. 8. exilis. Wilson, 65. f. 4. 
Americana. Wil.p].65.f.3. | minutus. Selby,jii.pl.6. f.1,2. 
Tigrisoma, Sw. Tiger Bitterns. Bill asin Ardea. Face, 
and sometimes the chin, naked. Legs almost feathered 
to the knees. Inner toe rather shorter than the outer. 
Claws short, stout, regularly curved ( fig. 307. f). An- 
terior scales reticulate or hexagonal. The rasorial type. 
| T. lineata. Pl. Col. 860. 
Nyctiardea, Sw.t Night Herons. Bill rather short, 
broad, stout. Culmen curved from the base ; the tip 
* I have considerably extended the limits of this subgenus, which the | 
prince of Musignano restricts to the white egrets only. 
+ Nycticoraz, implying a resemblance altogether false, I have ventured 
to propose the true meaning of the vernacular name by which these birds | 
are so well known. 
