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Show 502 DR. R. W. SHUFELDT ON THE ANATOMY OF THE [Nov. 16, Tig.l. Fig. 3. Fio*. 5. EHg. Fig. 4:, Fig. 6. Fig. 1. Anconal aspect of left humerus of Tachycineta thalassina. X 3. Fig. 2. Palmar aspect of the bone shown in fig. 1. X 3. Fig. 3. Anconal aspect of the left humerus of Micropus melanoleucus. X 4. (This was the Panyptila saxatilis of m y first paper, but I have now adopted the nomenclature of the A. O. V. for this White-throated Rock-Swift.) Fig. 4. Palmar aspect of the bone shown in fig. 3. X 4. Fig. 5. Anconal aspect of the left humerus of Trochilus alexandri. X 8. Fig. 6. Palmar aspect of the bone shown in fig. 5. X 8. By " anconal" I mean that side of the bone which is next to the body of the bird, and the reverse of this is the "palmar'' aspect. All these figures are drawn from the specimens by the author, and p.f. calls attention to the pneumatic fo sa. |