56 JOURNAL OF CoMPARATIVE NEUROLOGY. 
not shown its real nature. The infra-orbital nerve he calls the 
maxillaris and assigns it to the trigeminus. He makes this 
maxillaris homologous with the maxillaris of higher forms. 
In Salamandra maculata, according to KINGsLEy’s correc- 
tion of the work of von PLEsSEN and Rasprnowicz, the relations 
between the nerves in question would seem to be essentially the 
same as I have described them in Amblystoma tigrinum. How- 
ever, neither von PLEsSSEN and Rapinowicz nor*KINGSLEY de- 
scribe the compound nature of this anastomosis. 
In Cryptobranchus alleghaniensis (Menopoma Harl.) 
FIscHER describes the first branch (ophthalmicus profundus) of 
the trigeminus as anastomosing, by a branch given off in the 
region of the muscle .rectus superior, with the second branch 
(maxillaris) of the trigeminus. WiLpER confirms this anasto- 
mosis and says that the nerve resulting from it anastomoses 
through a few fibers with the palatinus VII. McGrecor, men- 
tioning the anastomosis between the ophthalmic and maxillaris, 
says nothing of the fibers which enter the palatine. He claims, 
however, that the presence of lateral line organs ventral of the 
eye proves the presence of lateral line fibers in the maxillaris 
(second branch, of Fiscnrr). If there are such fibers in this 
nerve it would seem to be homologous with the infra-orbital 
nerve in Amblystoma, in which case the anatomosis with the 
ophthalmic would present some difficulty. But McGrecor does 
not claim completeness for his work inasmuch as it was mostly 
done by dissection. 
In Amphiuma, according to WILDER, the relation between 
‘the ophthalmic and maxillaris are the same as in Crypto- 
branchus. He describes also a similar anastomosis between the 
same nerves in Siren lacertina, but none between either the 
ophthalmic or maxillaris and the palatine. 
In ‘Necturus Miss PLatr has observed the ontogenetic de- 
velopment of the nerve which corresponds with the infra-orbital 
nerve in Amblystoma. She shows that the nerve consists of 
general cutaneous V and accustico-lateral VII components which 
are intimately associated in the process of differentiation from 
the ectoderm. The general cutaneous component of this nerve 
