“WILLARD: CRANIAL NERVES OF ANOLIS CAROLINENSIS. 30 
One (Plate 4, fig. 9, Ing. lg. 1) forms the lateral wall of the tongue at 
its base and continues forward in the same relative position finally to 
dwindle out in the mucous membrane anterior to the sublingual gland 
(Plate 4, fig. 8). For practically its whole distance it is closely ad- 
herent to the mucous membrane lateral to the tongue proper. The 
second part of this muscle (Ing. lg. 2) separates from the ventro-median 
side of the common bundle and has nothing to do directly with the 
tongue or mucous membrane. It passes forward as a free bundle to 
be attached to the anterior end of the mandibular ramus (Fig. F). 
Its action is to pull the base of the tongue forward. In addition to 
these longitudinal muscles. there is an intrinsic musculature. A 
detailed analysis of this is not attempted, but it is somewhat as fol- 
lows: — At about the level of the larynx there appears in cross sections 
a mass of transverse fibers (Ing. t.) applied to the dorsal face of the m. 
genioglossus and a mass of vertical fibers (/ng. urt.) on the median side 
of the same muscle (Plate 4, figs. 10,11). Farther cephalad this 
intrinsic tongue musculature becomes what might be called a vertical 
_decussating system; these fibres, originating along the median side 
of m. genioglossus and around the glossohyal, cross the median plane 
just dorsal to the latter and radiate up into the long lingual papillae, 
which, are well developed in the subterminal region of the tongue 
ko 4, fig. 9). 
The innervation of the tongue musculature is from the main bundle 
of nerve XII, although a part of this innervation occurs distal to the 
anastomosis of XII with lingual V, making an analysis by means of 
sections impossible. However, other facts, to be referred to later, 
support the assumption that lingual V provides a general cutaneous 
sensory component to the papillae and mucous surface in the 
anterior part of the mouth cavity, that the chorda tympani comes in 
with it to innervate the taste buds, and that XII innervates the 
‘ongue musculature. 
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3. MUSCLES OF THE Hyorp APPARATUS. 
M. cerato-mandibularis 1 (ker-md.1 = mylohyoides, Sanders). This 
a broad, rather thin muscle (Figs. E, F, G) having its origin 
long the inner margin of the dentary bone and inserted along the 
-vhole extent of the cerato-branchials I. 
_M. cerato-mandibularis 2 (ker-md.*). This is a compact bundle 
"ig. F) having its origin on the ventral face of the anterior end of the 
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