CATALOGUE 



FISHES. 



Subclass I. TELEOSTEI. 



{CONTINUED.) 



Order IV. PHYSOSTOMI. 



{CONTINUED.) 



Fam. 16. HETEROPYGIL 



Heteropygii, Tellkampf, Midler s Arckiv, 1844, p. 392. 

 Hypsseidce, Storer, Mem. Amer. Acad. ii. 1846, p. 435. 



Head naked, body covered with very small scales ; 

 barbels none. Margin of the upper jaw formed by 

 the intermaxillaries. Villiform teeth in the jaws and 

 on the palate. Adipose fin none. Dorsal fin belong- 

 ing to the caudal portion of the vertebral column, 

 opposite to anal. Ventral fins rudimentary or absent. 

 Vent situated before the pectorals. Stomach with a 

 blind sac ; pyloric appendages present. Pseudo- 

 branchise none ; air-bladder deeply notched anteriorly. 



Caves of North America ; South Carolina. 



VOL. VII. B 



