. The Ibis . wing of the female forms acontinuous line, the primaries being much shorter andgiving the wing a comparatively narrow appearance. The following is the sexual wing-formula:—Text-tig. 6.— £ . 3rd primary longest. 2nd and 4th primaries equal. 1st primary = 7th. 7th, 8th, and 9th primaries lj in. longer than in $ .7th primary 1£ in. wide—this being the average width of the inner primary f in. longer than the secondaries gradually diminish in length on nearingthe base, giving a somewhat concave outline. Variation in the Wing of the Lapwing. 449 Text-tig.
. The Ibis . wing of the female forms acontinuous line, the primaries being much shorter andgiving the wing a comparatively narrow appearance. The following is the sexual wing-formula:—Text-tig. 6.— £ . 3rd primary longest. 2nd and 4th primaries equal. 1st primary = 7th. 7th, 8th, and 9th primaries lj in. longer than in $ .7th primary 1£ in. wide—this being the average width of the inner primary f in. longer than the secondaries gradually diminish in length on nearingthe base, giving a somewhat concave outline. Variation in the Wing of the Lapwing. 449 Text-tig. 8.— ? . 2nd and 3rd primaries equal and and 4th primaries primary 1 in. shorter than primary 1 in. primary only I in. longer than thesecondaries, excepting the 1st secondary,Avhich is rather shorter than the a rule, the white basal portion of the secondaries in thefemale extends further down the feathers, so that the shorter Text-fier. 7. Text-fig. Wing of Lapwing, 5,
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectbirds, bookyear1859
