OSTEOLOGICAL GALLERY. 
D8 
[Case2o.] The Myrmecophayidoi, or Aiiteateis, diti'er from the Sloths by 
their drawn-out snouts, entire want of teeth, elongate })alate-bones, 
and long slender lower jaws. The most remarkable species is the 
Great Anteater (Myrmecophaya juhata), an animal with a long 
narrow head, about a foot in length, the greater part of which is 
made up by the maxillary bones. There are no zygomatic arches 
to the skull, but little biting-power being needed. The clavicles 
are exceedingly rudimentary. 
In the third family of Edentates, or Armadilloes {Dasypodidce) , 
teeth are present, generally 2 = 28 to 38 in number, but in 
• the Giant Armadillo amounting to 2 = 80 to 100. These 
teeth are small and simple, with single roots. In the genus 
Tatusia a set of functional double-rooted milk-teeth precedes the 
simple one-rooted permanent ones, and traces of a milk-dentition 
have also been found in Dasypus, Zygomatic arch complete. 
Second and third, and often several of the other cervical vertebrae 
ankylosed together. The clavicles are well developed, and the 
whole anterior limb is enormously strengthened to support the 
huge digging-claws. The pelvis (as in the Sloths and Anteaters) 
is ankylosed to the vertebral column both by the ilia and ischia, 
and in one genus [Chlamydophorus) the dermal bony shield is 
united to the pelvis by vertical pillars. 
The fossil forms referable to the Dasypodida, mostly found in 
the Pleistocene deposits of South America, are both numerous and 
interesting, many of them showing relations with still existing 
genera, while others, notably the huge Glyptodons (see Geol. 
Guide, p. 70), of which five genera are known, present characters so 
peculiar as to necessitate their being placed in a separate family. 
Of the Old-World Edentates, the Pangolins, or Manidce, are 
characterized by their entire want of teeth, elongated skulls, which 
are without zygomata, slender jaws, and by their long powerful 
tails, of which the vertebrae, numbering from 28 to 46, are provided 
with large chevron bones. The sternum is produced backwards 
nearly to the pubis, and the retractor muscles of the tongue are 
attached to its posterior part. There are no clavicles. 
A few traces of fossil Pangolins have been found in the lower 
Pliocene of India and the island of Samos. 
