42 R. W. Shufeldt 



or haydeni. Measurements will prove this fact, for the greatest 

 transverse diameter (over all) for this end of the bone measures in 

 G. canadensis 2.25 centimeters; in Grus haydeni 2.50 centimeters 

 (approximate internal condyle broken off); in Grus marshi 1.9 centi- 

 meters. 



The osseous tendinal bridge, spanning the tendinal groove in front, 

 and the tubercule for tendinal insertion to its outer side, morphologi- 

 cally agree in all three of these species (compare Fig. 21, PL II; Figs. 

 66 and 67, PI. VIII; and Fig. 144 of PL XV); and it will in all Hke- 

 lihood be found that they will be practically the same in all species of 

 true cranes of the genus Grus} This extinct species of the Gruidoe I 

 name in honor of the late Professor Othniel Charles Marsh, formerly 

 professor of palaeontology at Yale University. 



Minerva antiqua Shufeldt. 



{Plate XV, Figs. 131-136, 14S-152 a-b, 154 a-i.) 



Aquila antiqua Shufeldt, Bull. Amer. Mus. Nat. Hist., XXXII, August 4, 1913, 

 Art. XVI, 297, PI. LV, Fig. 26. 



At this writing I am satisfied that Aquila anliqua, described by me 

 in the Bulletin of the American Museum oj Natural History in 1913, 



1 Loomis, F. B. "A Fossil Bird from the Wasatch." Amer. Joum. Sci., ser. 

 4, 22, 1906, Art. XL, 481, 482, Figs. 1-3. 



In this article Professor Loomis describes the remains of a fossil bird from the 

 Wasatch Lake Basin (Lower Eocene), which he names Gallinuloidcs prentici, or, 

 in other words, refers it to the genus Gallinuloides of Eastman (Geol. Mag., Lond., 

 1900, n. s. Decade IV, VII, Art. II, 54-57. Plate). As will be observed from a 

 comparison of Fig. 1 of Professor Loomis' paper with Fig. 21, PI. II, Figs. 66 and 

 67, PI. VIII and Fig. 144 of Plate XV of the present article, that extinct species like- 

 wise belonged to the Gruidae, as the distal end of the right tibio-tarsus there figured 

 was undoubtedly that of a Grus, and the form should have been referred to that 

 genus as Grus prentici. That bird was a crane fully as tall and as big as Grus 

 canadensis, and Professor Loomis himself says that "this bird was about half as 

 big again as a turkey and of rather heavier build," or was, in other words, a very large 

 species of Grus. Now it is not at all likely that a bird as big and as tall as G. 

 prentici would belong in the same genus with a bird about "the size of a gaUinule" 

 (Eastman), which latter possessed all the main characters of a grouse in its skele- 

 ton. In other words, Gallinuloides wyomingensis Eastman and Gallinuloides pren- 

 tici did not even belong in the same Order, as most present-day ornithologists 

 define that group. 



Some day I trust to examine the type of Dr. Eastman's Gallinuloides wyoming- 

 ensis, and I am very much inclined to believe, from my examination of his excel- 

 lent figure of it, that it had a far greater number of tetraonine characters in its 



