jgo 



BROAD-NOSED EEL. 



There is^little reason to doubt that the cranial ducts are connected with the so-called " mucus 

 system," which is very complicated in the Eel tribe, but in ivhat manner they are so I have 

 hitherto been unable to satisfy myself, and leave the determination of the question to the 

 investigation of more experienced anatomists. 



Fig. 1. — Head of A. culyaris, showing the orifices of the canals, a, Anterior orifice. 5, posterio]* ditto. 



Fig. 2. — The same, with the soft parts removed, and with a bristle inserted into each canal. Fig. 3.— Side view of same. 



Fig. 4. — Vertical section of cranium of A. vulyavis. Fig. 5.— Membranous fold or hollow in which the canal terminates. 



