4i8 



TELEOSTEI 



Family Notacanthidae. The dorsal fin is represented by a series 

 of separate spines. Spines are also found in the anal and pelvic fins. 



Fig. 4 is. 

 Lipogenys Gillii, G. and B. (From .Ionian and Evermann.) 



Fig. 419. 

 Notacanthus analis, Gill. (From Jordan and Evermann.) 



The premaxillae alone enter the margin of the small inferior mouth. 

 The suborbitals and post-temporal have been lost. 



Notacanthus, Bl. ; depths of the Mediterranean, Atlantic, and Pacific 

 (Fig. 419). 



Tribe 2. 



Scaleless fish, with the anus near the head ; a situation which may 

 be related to their habit of living inside other animals, such as Bivalves 

 and Holothurians. 



Fig. 420. 



Fierasfer acus, Kanp ; one specimen emerging from a liolothnrian. 

 (After Emery, from Dean.) 



