r.ONES OK HAND 



169 



which these latter bones are connected with the stermun is 

 curiously like their mode of connexion with the spinal column at 

 theii- other end. ^Yith this may be possibly compared the double 

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

 in the Eorquals. In Ci/r/ofvrus this mode of articulation does 

 not occur. 



The manus of Myrmecopliiiii<t is five-fingered. Of these 

 the third digit (as in I'erissodactyles) is the most prominent ; 



-Id 

 tm 



Fig. 95. — A, Manus of Great Anteater (Mji'inecoplMga jubahi). v. \. B, Manns of 

 \A\.Vi.% K^\&^\>^t: ^Cycloturv^s didactylus). x 2. c, Cuneiform ; ^, lunar ; 7//, magnum ; 

 p^ pisiform ; s, scaphoid ; td^ trapezoid ; ////, trapezium ; n^ unciform ; /-T', digits. 

 (From Flower's OsteiAogy.) 



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

 poUex is very slender. In the little Cycloturus 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. Tamanclua has also retia, which are also 

 found in the Spider-monkeys. 



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



