PLATE XVIII 



1, 2, Sternum. 3, Tongue, 4, same enlarged, 5, Top of head, 6, Head of Yellow-bellied Woodpecker. 7, 

 Tail feather, 8, I), Sternum, 13, Head, IH, Tongue. lit, same ( enlarged) . 20, Stomach of Red-bellied Wood- 

 pecker. 10, Head, 11. V2, Sternum, 14, Section of Stomach, 1-5, Stomach, 16, Tongue, 17, same ( enlarged) 

 uf Red-headed Woodpecker. 21. Stomach, 22, Proventriculus gland (enlarged ) . 2M. i'roventriculus, ofiened. 

 4, He;id. 2-"i. Snlivarv gland, 2i>. 27, Stei'num "t GoMen-winged W'v.(l|iecker. 



