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WILLARD: CRANIAL NERVES OF ANOLIS CAROLINENSIS. 61 
its fibers are inextricably mingled with those of XII, which they closely 
resemble. The difficulties of plotting the mixed rami are here further 
increased by the retraction of the tongue muscles, which throws the 
terminal rami into numerous coils. The plotting (Plate 3, fig. 5) 
attempts to trace the lingualis and XII only so far as to show the 
union of the entire lingualis by two branches with branches of XII. 
. This takes place after the lingualis has been traced cephalad for some 
distance parallel with the chorda tympani and then back again parallel 
with XII close to the mucous membrane at the base of the groove 
which bounds the tongue laterally (Plate 4, figs. 10, 11). Numerous 
dissections were made in this region, which added little information as 
to the exact form of the anastomoses. The fact was established, 
however, that, after joining XII, some of the fibers of V continue 
caudad presumably to reach the age through more proximal 
branches. 
Terminal distribution of the ramus alveolaris inferior. The final 
distribution of the sensory components, left in the alveolar branch 
after the separation of the chorda tympani, the lingualis, and a large 
cutaneous branch, is accomplished through a series of terminal rami, 
which make their exit from the alveolar canal through a number of 
foramina on the lateral side of the dentary bone (Plates 2, 3, figs. 
5, 6, lab. af. alv.). These are termed by Watkinson (:06, p. 462) 
the “rami ad glandulae labiales inferiores,”’ the emphasis thus being 
placed upon their distribution to glands. They probably carry 
sympathetic fibers to the glands, but if so, these are non-medullated 
and are not distinguishable in sections. A conspicuous feature in 
| Anolis is the highly sensitive nature of the lips, as is indicated by the 
| rich supply of typical cutaneous sensory fibers to the skin in this 
| region. The epidermal sense organs are also more numerous here 
than elsewhere. The strongly medullated sensory fibers are strictly 
limited to the epidermis at the sides of the lips lateral to the external 
_ labial gland (Plate 4, figs. 8-10). The external glands are not very 
| largely developed here, although they occur along the entire length of 
the lips both upper and lower. 
The n. alveolaris does not emerge as a whole from the alveolar canal 
_ until the end of the mandible is reached. Here it comes out as four 
is or five terminal branches, giving to this region an even richer nerve 
_ supply than was accorded the lips along the lateral part. 
_ Innervation of the teeth. The teeth are of the typical pleurodont 
type, being fused directly with the median side of the dentary bone. 
be pulp cavity of each tooth is in communication with the cavity 
