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A 
WILLARD: CRANIAL NERVES OF ANOLIS CAROLINENSIS. 41 
one ramus of the mandible to the other, and reaching from the articu- 
lare to the anterior fourth of the mandible, thus covering all of the 
intermandibular space except a small anterior area. From the figure 
it is seen that the posterior half of the sheet has its origin on the 
ventral side of the mandible, while the anterior half is inserted on the 
median face of that bone. Many of the fibers from the latter pass 
underneath those of the cerato-mandibularis, so that there is an 
interlacing of these two muscles along the inner border of the mandible. 
The innervation is from the anterior fibers of ramus hyoideus VII and 
from two or three rami of the mandibular V (myl-hy., Fig. J.), which 
leave the main trunk as mixed nerves (Plate 2, fig. 5; Plate 3, fig. 6, 
myl-hy.). 
fe Versluys (798, fig. 60-62) figures the m. mylo-hyoideus of Mabuia 
multifasciata.as dovetailing with the cerato-mandibularis, as in Anolis. 
dep.mds~~ 
SS 
a \\\ ae hy. 
ah = 
yaa Nea ZS 
= ft, my 
os mail i | M 
NN NIB 
HM es 
AA Md “ib 
“spn coll. ee as JE a al TEU PEL LES 
Fie. J.— Camera drawing of the distribution of the motor rami of the facial 
nerve and the motor rami of the trigeminal nerve that are carried in the 
ramus mandibularis. From a preparation made by removing sphincter, 
digastric, and mylo-hyoideus muscles from a specimen fixed in vom Rath’s 
solution; the muscles are retained in their relative positions to one another 
and mounted for microscopic examination. The nerve fibers are all 
well blackened as far as the myelin extends. The preparation is viewed 
from its deeper surface. Three rami from the fifth nerve are shown in this 
figure, whereas only two appear in the plotting (figures 5 and 6 of Plates 2 
and 3). Although not demonstrated, it is probable that the two more 
anterior rami arise from a common branch of the mandibular ramus, which 
corresponds to the second ramus of the mylo-hyoideus shown in figs. 5 
and 6, Plates 2 and 3. 
i; ‘The muscle described as the posterior part of the mylo-hyoideus is 
designated by Versluys as the m. intermandibularis. This is the part 
innervated by a branch of VII. 
M. depressor mandibulae (digastric). This (dep. md.) is a well- 
leveloped, but not a powerful muscle in Anolis. It is broad and fan 
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