169 



which these latter bones are connected with the sternum is 

 curiously like their mode of connexion with the spinal column at 

 their other end. With this may be possibly compared the double 

 articulation of the single rib (which articulates with the sternum) 

 in the Eorquals. In Cydoturus this mode of articulation does 

 not occur. 



The manus of Myrmecophaga is five -fingered. Of these 

 the third digit (as in Perissodactyles) is the most prominent ; 



FIG. 95. A, Mauus of Great Anteater (Myrmecophaga jubata). x J. B, Manus of 

 Little Anteater (Gycloturus didactylus). x 2. c, Cuneiform ; I, lunar ; m, magnum ; 

 p, pisiform ; s, scaphoid ; td, trapezoid ; tm, trapezium ; u, unciform ; I- V, digits. 

 (From Flower's Osteology.) 



it is at least double the width of the second or third finger ; the 

 pollex is very slender. In the little Cydoturus this is carried to 

 a greater extent : the third digit is relatively enormous ; the first 

 and the fourth have become quite rudimentary ; while the fifth is 

 only just recognisable as a minute ossification. 



The chevron-bones in the tail surround a well-developed rete 

 mirabile, a rete being found in precisely the same position in 

 the Eastern Manis. Tamandua has also retia, which are also 

 found in the Spider-monkeys. 



Cydoturus is by far the smallest of the Anteaters. It has 



