i68 



OSTEOLOGY OF ANTEATERS 



posterior nares backwards. This is also, of course, a character 

 of various lower vertebrates. Another Whale -like character in 

 the skull is the weak character of the mandible, which does 

 not give off a marked coronoid process. But then in neither 

 group is there much mastication. The tympanic, periotic and 

 squamosal are ankylosed together. A peculiarity of the cervical 



b.oc 



msf 



FIG. 94. Side view of three 

 mesosternal segments of a 

 young Anteater (Tainan- 

 duo), showing the mode of 

 articulation of the sternal 

 rib (sr). mst. The upper 

 or inner surface of the 

 mesosternal segment ; sy, 

 the synovial articulation 

 FIG. 93.-Skull of Anteater (Myrme- ^^ ^> segments. 



cophaga). Ventral view. Letters (From Flower s Osteology, 



as in Fig. 92. In addition, b.oc, 

 basioccipital ; glen, glenoid sur- 

 face for mandible ; pter, ptery- 

 goid. (From Parker and Has- 

 well's Zoology.) 



vertebrae is that (as in the Camels) the vertebrarterial canal of 

 several of the vertebrae perforates the pedicle obliquely. There 

 are fifteen or sixteen dorsal and three or two lumbar vertebrae. 

 The additional zygapophyses upon the former have been already 

 referred to. The mode of articulation of the ribs is highly 

 singular. 



Each segment of the sternum (of which there are eight) is 

 separated from the next by a synovial membrane : and it has on 

 either side two facets for articulation with the ribs. The way in 



