ANSERINE — THE GEESE — CHEN. 
435 
greenish black, scarcely glossy ; breast with a large central irregular patch of dark chestnut ; 
crissum ochraceous buff. Bill, legs, and feet red in life. Wing, 14.75 inches; culmen, 1.90 ; depth 
of bill at base, 1.00 ; tarsus, 2.95 ; middle toe, 2.50. 
The following is the principal synonymy of the species : — 
Chenalopex 1 aegyptiaca. — Egyptian Goose. 
Anas aegyptiaca, Linn. S. N. ed. 12, I. 1766, 197. 
Chenalopex cegyptiaca, Stepii. Gen. Zool. XII. 1824, 43, pi. 42. — Bonap. Comp. List, 1838, 56. • — • 
Keys. & Blas. Wirb. Eur. 1840, 84. — Macgill. Man. II. 153. — Guay, Gen. B. III. 1849, 
605 ; Cat. Brit. B. 1863, 183 (England ; two instances). — Akiiukst, Bull. N. O. C. II. Apr. 
1877, 52 (Carnarsie, Long Island, N. Y. Jan. 3, 1877 !). 
Anas varia, Bechst. Orn. Taselienb. II. 1803, 454. 
Egyptian Goose, Yaru. Brit. B. ed. 2, III. 173, fig. ; ed. 3, III. 177, fig. 
Genus CHEN, Boie. 
Chen, Boie, Isis, 1822 (type, Anser hyperboreus, Pallas). 
Exanthemops, Elliot, Pr. Philad. Acad. 1868, (type, Anser Rossii, Baird). 
Of the three North American species of this genus, two, C. hyperboreus, the type, and C. cceru- 
lescens, are precisely alike in the details of form, the only difference being the coloration, which is 
C. hyperboreus. 
very distinct in the two ; the third species, C. Rossi, while agreeing strictly with A. hyperboreus in 
plumage, both in the adult and young stages, differs decidedly in the form of the bill, which is quite 
peculiar. It seems unnecessary, however, to adopt the generic term Exanthemops, proposed for 
1 Chenalopex, Stephens, Shaw’s Gen. Zool. XII. ii. 1824, 41 (type, Anser jubatus, Spix. — Scl. & 
Salv. P. Z. S. 1876, 360). [The Egyptian Goose seems hardly strictly congeneric with the South Ameri- 
can species upon which this genus was based, and may require another generic name.] 
