. The birds of British Guiana, based on the collection of Frederick Vavasour McConnell. Birds. OEYZOBORUS. 423 Genus ORYZOBOEUS Cab. Oryzohorm Cabanis, Mus. Hein. i. p. 150, 1851. Type O. angolensis (Linn.).. Fig. 161.—Oryzohorus crassirotris. The species included in this genus bdong to the thick-billed Finches. The bill is short and stout, the length of the exposed culmen is about equal to its depth at the nostrils, and its width at the base is about one-fifth less. The wing is rounded, the third, fourth, and fifth primaries longest and equal, the second about equal in length to the sixth, an
. The birds of British Guiana, based on the collection of Frederick Vavasour McConnell. Birds. OEYZOBORUS. 423 Genus ORYZOBOEUS Cab. Oryzohorm Cabanis, Mus. Hein. i. p. 150, 1851. Type O. angolensis (Linn.).. Fig. 161.—Oryzohorus crassirotris. The species included in this genus bdong to the thick-billed Finches. The bill is short and stout, the length of the exposed culmen is about equal to its depth at the nostrils, and its width at the base is about one-fifth less. The wing is rounded, the third, fourth, and fifth primaries longest and equal, the second about equal in length to the sixth, and the first about equal to the eighth. The tail is slightly rounded at the tip, the outermost feather on each side being about 7 mm. shorter than the middle ones, which are nearly as long aa the wing. The tarsus exceeds the length of the exposed culmen by more than one-half. Coloration : male and female different. Key to the Species. A. Smaller, wing less than 62 mm.; bill black ; abdomen chestnut O. hrevirostris, p. 423. B. Larger, wing more than 62 mm.; bill white ; abdomen black , O. crassirostris, p. 425. 616. Oryzoborus Small-billed Tkopioal Seed-Finos. Oryzohorus torridus (nee Scop.) Salvin, Ibis, 1885, p. 214 (Eoraima, 3500 ft., Merume Mts., Camacusa, Bartica G-rove) ; Sharpe, Cat. B. Brit. Mus. xii. p. 77, 1888 (Eoraima, Camacusa, Bartica Grove); Quelch, Timehri (2) v. p. 85, 1891 (Georgetown); Beebe, Our Search for a Wilderness, pp. 121, 127, 1910 (Georgetown).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chubb, Charles; McConnell, Frederick Vavasour, d. 1914. London, B. Quaritch
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