ARDEA. 129 
in A. herodias), the foréhead and middle of 
crown pure white. Young not essentially 
different from same stage of A. wuerde- 
manni? Length about 48,00-54.00, wing 
20.00-20.50, culmen 6.50-7.00, tarsus 8.50— 
9.00. Hggs about 2.65 x 1.85. Hab. Western 
Florida. 
193. A. wardi Ripew. Ward’s Heron. 
gy’. Lower parts black or dusky, broadly striped with 
white (the two colors in nearly equal proportion 
in young, however); tarsus not more than 8.00; 
legs and feet black in adult. 
Adult: Occiput and sides of crown black; fore- 
head and centre of crown pure white (exactly 
as in A. wardi). Young: Whole top of head 
dusky, some of the feathers with paler shaft- 
streaks; wing-coverts without white spots or 
distinct rufous spots. Length about 42.00- 
50.00, wing 17.90-19.85, culmen 4.30-6.25, 
tarsus 6.00-8.00. Eggs 3-6, about 2.50 x 
1.50. Hab. North America in general, north 
to Hudson’s Bay and Sitka; south through- 
out West Indies and Middle America, and as 
far as Colombia and Venezuela; Galapagos? ; 
Bermudas. 
194, A. herodias Linn. Great Blue Heron. 
J?. Thighs and edge of wing white. 
g. Adult with occiput and sides of crown black, the 
forehead and centre of crown pure white (as in 
A. herodias and A. wardi) ; neck ash-gray ; length 
about 37.00, wing about 18.50, culmen 4.80, tarsus 
6.00-6.25. Eggs 240 x 1.71. Hab. Northern 
portion of eastern hemisphere; accidental in 
southern Greenland. 
195. A. cinerea Linn. European Blue Heron. 
g. Adult with entire top of head black; neck pure 
white; wing 18.50-20.00, culmen 5.85-6.75, tarsus 
7.20-8.00. Had. South America. 
A. cocoi Linn. Cocoi Heron! 
d’. Wing less than 17.00. Adult in nuptial plumage with the scapular 
plumes excessively elongated, reaching far beyond end of tail, 
their shafts thick and stiffened, their webs decomposed; head 
without crest or plumes, and feathers of lower neck (in Amer- 
1 Ardea cocoi Linn., 8. N. ed. 12, i. 1766, 237. 
17 
