PLATE XIII 



[All the Figures in this Plate are somewhat above natural size, and made direct 

 from the specimens by the author] 



Fig. 91. Palmar aspect, proximal end, of main shaft of left carpo-metacarpus. 

 (Fossil.) Graculavus agilis Marsh (Type). 



Fig. 92. Fragment of fossil bone (bird?) accompanied the type specimen of 

 Graculavus agilis Marsh. (See Figure 91.) 



Fig. 93. Type of Graculavus anceps Marsh. (See description in text.) 



Fig. 94. Anconal aspect, proximal two-thirds of right humerus of Phasianus 

 mioceaiius, sp. nov. 



Fig. 95. Anconal aspect of right humerus of P/iasisaiius colc/iius. (No. 

 19293, Coll. U. S. Nat. Mas. cT.) Introduced for comparison with Figure 94. 



Fig. 96. Outer aspect, proximal extremity, of left femur of Phasianus mio- 

 ceanus, sp. nov. (extinct). 



Fig. 97. Small fossil bone (not bird) found with the fossil remains of Phas- 

 ianus mioceanus. (See description in text.) 



Fig. 98. Oblique posterior aspect of the left femur of Phasianus colchius cf . 

 No. 19293. Coll. U. S. Nat. Mus. Adult. Introduced to compare with Figure 96. 



Fig. 99. Anconal aspect of a right carpo-metacarpus, proximal portion (fossil) 

 of Branta canadensis. (See description in text.) 



Fig. 100. Palmar aspect of distal part of indicial shaft of right carpo-meta- 

 carpus (fossil) of Branta canadensis. Belonged to the same bone shown in Figure 

 99. 



Fig. 101. Palmar aspect of the distal two-thirds of the right humerus of 

 Teimalornis rex, sp. nov. (fossil), .\dult; extinct. 



Fig. 102. Anterior aspect of the fore part of the sternum of Eoceor>iis ardctla, 

 gen. et sp. nov. (fossil). Adult; extinct. 



Fig. 103. Palmar aspect of the left carpo-metacarpus and proximal indicial 

 digit of Colinus eatoni, sp. nov. (fossil; extinct). Adult. 



Fig. 104. Palmar aspect of the right humerus of Fulica americana. (No. 

 19710, Coll. U. S. Nat. Mus) . Adidt. Introduced for comparison with Figure 101. 



Fig. 105. Anconal aspect of the left carpo-metacarpus of the Loon {Gavia 

 immer). No. 18496. Coll. U. S. Nat. Mus. .\dult. Introduced for comparison 

 with Figure 106. 



Fig. 106. Anconal aspect of the proximal end of the left carpo-metacarpus of 

 Gavia pusilla, sp. nov. Fossil, .\dult (extinct). 



Figs. 107-110. Fossil fragments of some species (adult) of extinct bird, not 

 determined. A large tetraonine form. Figure 107, distal end of left ulna; Figure 

 108, the proximal end of a right carpo-metacarpus; Figure 109, fragment of upper 

 third of the indicial shaft of a right carpo-metacarpus; Figure 110, middle and inner 

 trochleas with proximal ends of basal phalanges (articulating with them) of the 

 right tarso-metatarsus, embedded on the plantar aspect in the matrix. 



102 



