50 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
nerves. Upon closer examination it is found:to contain fibers. of still 
finer caliber and of lighter medullation and also possibly some non- 
medullated fibers. The latter point is difficult to establish where 
such fibers are relatively few and not grouped into a bundle. The 
course of this nerve is directly cephalad to the orbit keeping to the 
ventro-lateral side of all the eye muscles (Plates 3, 5, 6). Soon 
after this nerve has begun its peripheral course its lightly medullated 
fibers become grouped into a bundle on its ventral side. These leave 
the main ramus about midway between the Gasserian ganglion and 
the orbit, and form a communicating ramus (comn.), which joins 
palatine VII a short distance cephalad of this point (Plate 3, figs. 6, 7; 
Plate 5, figs. 14,15). In the palatine nerve its identity is wholly lost, 
although the nature of its union strongly indicates that it does not 
form a recurrent bundle, but continues its course cephalad. 
Two very small but noteworthy twigs (Plate 3, figs. 6, 7, protru. oc.) 
are given off from this communicating ramus to innervate the muscle 
which has been described as the protrusor oculi. In the dissection 
(Plate 3, fig. 7), where this was clearly worked out, it will be noticed 
that one twig is given off from the rm. palpebralis inferior itself and 
only one from the communicating ramus. The fibers innervating 
this muscle are of the same character as those of the communicating 
ramus and in distinct contrast to those remaining in the main motor 
ramus, which, farther cephalad, innervate the depressor muscle of the 
lower eyelid. A comparison with the opposite side of the head and 
with other series of sections shows practically the same relation, al- 
though on the opposite side in the same series a twig is given off 
proximal to the communicating rami, as in Plate 3, fig. 7. It comes, 
however, from the ventral lightly medullated bundle, which is as 
clearly marked off as though it were a separate ramus. 
Although Fischer (’52) describes the innervation of the m. depressor 
palpebrae inferioris by a ramus coming directly from the motor root, 
as in Anolis, he makes no mention of a communicating ramus between 
this nerve and palatine VII. The one mention of it met with is by 
Watkinson (:06, p. 457, 463) in Varanus, where it is described as 
a communicating ramus between palatine VII and the Gasserian 
ganglion by way of this motor nerve. From dissections alone it would 
appear to be mere assumption that it takes this course. From the 
sections of Anolis it seems quite clear that the components of this 
connecting ramus have a distal existence in the palatine. Such am 
anastomosis between a pure motor ramus and the viscero-sensory ! 
not met with in Anolis in any other connection. No reference is made 
