VERTEBRAE OF ANTEATERS 



The first of these characters is the series of additional 

 zygapophyses on the posterior dorsal and lumbar vertebrae ; 

 these are very clear in the Anteaters and Armadillos ; less clear, 

 but still obviously represented, in the Sloths. In the second 

 place, they all possess a clavicle, rudimentary, it is true, in the 



tc 



FIG. 89. Great Anteater (Myrmecophaga jubata). A, Side view of twelfth and thirteenth 

 thoracic vertebrae. B, Posterior surface of second lumbar vertebra. C, Anterior 

 surface of third lumbar vertebra, x |. az, Anterior zygapophysis ; az 1 , az' 2 , az :i , 

 additional anterior articular facets ; cc, facet for capitulum of rib ; in, ineta- 

 pophysis ; pz, posterior zygapophysis ; pz l , pz 2 , pz 3 , additional posterior articular 

 facets ; t, transverse process ; tc, facet for articulation of tubercle of rib. (From 

 Flower's Osteology.) 



Great Ant-bear, but still present. Thirdly, the testes are 

 abdominal throughout life, a character which they share with 

 such lowly -organised animals as the Monotremata and the 

 Whales. Finally, and this is by no means a matter to be over- 

 looked, not only are all the existing members of this group 

 American in range, but there is no evidence to prove that they 

 have ever existed elsewhere. No European or Old- World repre- 



