304 FISHES. 



ish, fins yellow-edged; D. I, 6; P. I, 6; A. 16. Walkill 

 R., N. Y., etc. (The species of this genus need a critical 

 revision.) 



5. GRONIAS, Cope. BLIND CATS. 

 1. G. nigrilabris, Cope. BLIND CAT FISH. Form of 

 Amiurus; blackish; D. I, 7; P. I, 9. Subterranean 

 stream tributary to Conestoga R., E. Penn. 



OEDEE BB. - APODES. 



(The Eels.) 



Maxmary Dones rudimentary; body serpentiform ; no 

 ventral fins; scapular arch free from skull; scales small 

 or wanting. 



FAMILY CXI. ANGUILLIDJE. 



(The Eels.) 



Body much elongated, nearly cylindrical, covered with 

 small scales; vent posterior; pectorals present; vertical 

 fins confluent; sides of upper jaw formed by the maxil- 

 laries; intermaxillaries more or less coalescent with the 

 vomer; stomach coecal. Genera two or three; "an in- 

 finite number of species have been described" (Gunther), 

 but the actual number cannot exceed forty. In seas and 

 sluggish fresh waters of all regions. 



/. ANGUILLA, Thunberg. EELS. 

 1. A. rosfrata, (LeS.) DeK. COMMON AMERICAN EEL. 

 Distance between dorsal and anal shorter than head. U. 

 S., chiefly coastwise, but ascending all rivers and intro- 

 duced into the Great Lakes. But one species is recog- 

 nizable. (A. bostoniensis. Authors, but the name rostrata 

 has priority. 



