502 



DR. R. W. SHUFELDT ON THE ANATOMY OF THE [NoV. \ 6, 



arig. 1 



Fig-. 5. 



Pig.. 2. 



Fig. 4. 



Fig. 6. 



Fig. 1. Anconal aspect of left liumerus of Tachycinefa thalassina. X 3. 



Fig. 2. Palmar aspect of tbe bone shown in fig. 1. X 3. 



Fig. 3. Anconal aspect of the left humerus of Micropus mclanolcucus. X 4. 

 (This was the Panyptila saxafilis of my first paper, but I have now 

 adopted the nomenclature of the A. O. U. for this White-throated 

 Eock-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 fromthe specimens by the author, and p.f. calls attention to the 



'p>ieu?nafic fo sa. 



