. A monograph on the anatidae, or duck tribe. ANATINB.] 44 The proportions of the skeleton are:—Depth of the keel to the length of the sternum as 1 to5. Breadth of the pelvis to its length as 1 to 1 4-5ths. Length of femur to that of tibia as 1 toIf. Depth of cranium to its length as 1 to 2j. Affinity. The elongated lamellae ally this genus to the two preceding. It appears.,indeed, to be precisely intermediate between them and the following..
![. A monograph on the anatidae, or duck tribe. ANATINB.] 44 The proportions of the skeleton are:—Depth of the keel to the length of the sternum as 1 to5. Breadth of the pelvis to its length as 1 to 1 4-5ths. Length of femur to that of tibia as 1 toIf. Depth of cranium to its length as 1 to 2j. Affinity. The elongated lamellae ally this genus to the two preceding. It appears.,indeed, to be precisely intermediate between them and the following.. Stock Photo](https://c8.alamy.com/comp/2AG266B/a-monograph-on-the-anatidae-or-duck-tribe-anatinb-44-the-proportions-of-the-skeleton-aredepth-of-the-keel-to-the-length-of-the-sternum-as-1-to5-breadth-of-the-pelvis-to-its-length-as-1-to-1-4-5ths-length-of-femur-to-that-of-tibia-as-1-toif-depth-of-cranium-to-its-length-as-1-to-2j-affinity-the-elongated-lamellae-ally-this-genus-to-the-two-preceding-it-appearsindeed-to-be-precisely-intermediate-between-them-and-the-following-2AG266B.jpg)
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