Nest.--The incubation mound built by this species is fully described below. The eggs are prized by the natives for food; both the eggs and the birds are quite palatable. When fresh the thin surface layer of the egg is dark pink, usually smooth, but occasionally roughened by small lumps; when exposed to air and light for some time the color becomes dull, dirty brown and in many cases the outer layer crumbles away exposing the true shell which is dull white and closely pitted. Five eggs from Calayan taken in December measure: 78 by 52; 82 by 52.5; 82.5 by 47; 80 by 51; 79 by 51. "This species probably occurs on every island of any size in the group. It is frequently met with a considerable distance inland, where it frequents wooded plains and hill. Its nest is usually, though by no means always, built near the seashore. Several pairs of birds frequently nest in the same mound, scratching up a little additional material every time that an egg is deposited, eventually forming a very large mound of earth, decayed leaves, sticks, etc., which in extreme cases comes to measure from 4 to 5 meters in diameter by 1 1/2 meters high in the middle. The mound is frequently formed about the roots of some old stump. When ready to lay, the female tunnels into this mound, sometimes even burrowing into the solid ground to a depth of half a meter or more, so that the eggs are one to two meters below the surface of the mound. The egg is deposited at the bottom of this burrow, which is then filled up. The young birds dig to the surface as soon as hatched. They can run and fly when they leave the shell, and seem always to shift for themselves from the day of their birth. M. cumingi seems to lay all the year round, the female apparently depositing an egg about once a week. The eggs are oval in form, of a curious pinkish color when fresh, but rapidly fading to a light dirty brown if exposed to the light. "The old birds seem rather reluctant to take wing and when flushed fly but a short distance, alight on the ground and run with great rapidity. "There is much individual variation as to size and color even in birds from one locality. Length, 336 to 380; culmen, 15 to 19; tarsus, 55 to 68; wing, 210 to 233; tail, 63 to 86. Iris dark chocolate-brown; bill light yellowish at tip, brown at base; legs sometimes dark brown, but usually strongly tinged with red, especially at back; feet dark brown to black; nails black." (Bourns and Worcester MS.) Suborder PHASIANI. Family PHASIANIDÆ. Bill strong and horny, nostrils oblong, never hidden by feathers; culmen curved but not hooked; tarsi naked and in the male armed with spurs (Excalfactoria without spurs); toes four, naked, and never pectinated along sides; sexes differently colored. Genera. a1 Much smaller; length less than 150 mm.; head without crest or comb; spurs absent ... Excalfactoria (p. 12) a2 Much larger; length more than 350 mm.; head crested or with a comb; spurs present in the male.