ANGUILLIFORMES 



405 



Division 2. NEENCHELI. 



The pelvic and caudal fins have been lost. 



GROUP A. ENCHELICEPHALI. 



Toothed maxillae are present, and the palatopterygoid arch is 

 usually complete. 



Family ANGUILLIDAE. The skull is well ossified ; but the bones are 

 sunk deeply, and only one of the circumorbital series remains in front. 

 The opercular bones are of moderate size, and the branchial arches well 



FIG. 400. 

 Labichthys carinatus, G. and R. (From Jordan and Evermann.) 



developed (Fig. 402). The branchiostegal rays long and curled inwards. 

 Anguilla, Sinenchelis, and Ilyophis have vestigial scales. 



Eomyrus, St. ; Rhynclwrhimis, A. S. W. ; Eocene, England. Anyuilla, 

 Shaw ; widely distributed, and Eocene, Europe. Nettastoma, Eaf. ; 



Fio. 400 A. 

 Derichthys serpentinvs, Gill. (From Jordan and Evermann.) 



Pacific, Mediterranean ; and Eocene, Europe. Sinenchelys, Gill ; Ilyophys, 

 Gilbert deep-sea. Conger, Kp. ; Congromuraena, Kp. ; Uroconyer, Kp. ; 

 Myrus, Kp. ; Ophichthys, Gthr. ; Morinqua, Gray. 



