VIII TAMANDUA AND CYCLOTURUS 167 
Along their course these ducts are provided with a sphincter 
muscle, which squeezes the secretion towards the external orifice 
into the mouth-cavity. The stomach is somewhat gizzard-lke. 
The intestine has no caecum.! 
The Anteater’s great claws are not only serviceable in tearing 
up the ground to get at its food; armed with them he does not 
fear, as Mr. Waterton .remarked, “the fatal pressure of the 
serpent’s fold or the teetl.of ‘the famished jaguar.” An Anteater, 
too, is more than a match for a big dog, and will rip open its 
belly with the claws while the dog is vainly trying to make an 
impression with its teeth upon the shagey hair. 
Tamandua is a smaller animal than Myrmecophaga, and, as 
has been stated, is arboreal; associated with this habit is a pre- 
hensile tail. Like the last genus, Twmandua has a rudimentary . 
clavicle, this bone being well developed in the little Cycloturus. 
The skull of the Anteater” is very long and low; the fore- 
part is tubular, and there appear to be no traces of teeth. The 
Fie, 92.—Skull of Anteater (Myrmecophaga). Lateral view. al.sph, Alisphenoid ; cond, 
condyle of mandible; cor, coronoid process of mandible ; e#.0c, exoccipital ; 
ext.aud, external auditory meatus ; fr, frontal ; ju, jugal ; der, lachrymal ; maz, 
maxilla ; nas, nasal ; occ.cond, occipital condyle ; pal, palatine; par, parietal ; 
pmax, premaxilla ; s.oc, supraoccipital ; sg, squamosal; ty, tympanic. (From 
Parker and Haswell’s Zoology). 
premaxilla is very small; the zygomatic arch is imperfect, and 
does not reach the squamosal behind. A curious feature of this 
genus, which it shares with some Dolphins and other Whales, is 
that the pterygoid bones develop palatine plates which meet each 
other in the middle line, and thus shift the opening of the 
1 See for anatomy Owen, Trans. Zool. Soc. iv. 1862, p. 117, and Forbes, Proc. 
Zool. Soc. 1882, p. 287. 
2 For the skull of Edentates generally see Parker, Phil. Trans. clxxvi. 1885, 
pt: 1. p. 121. 
