FISHES OF PENNSYLVANIA. els 

15. Amiurus natalis (Le Sueur). 
The Yellow Catfish. 
The yellow catfish is robust and has a rather broad head. The mouth is wide, with 
the upper jaw usually longer than the lower, sometimes equal toit. The dorsal profile 
gradually ascends from the snout to dorsal spine. The depth of the body at dorsal 
spine iscontained four and two-thirds times in the total length to base of tail. The 
length of the head is contained three and two-thirds times in the body length, and 
equals length of anal base. Eye moderate; maxillary barbel reaching end of 
head. Humeral process little developed. Dorsal and pectoral spines strong, shorter 
than soft rays. Height of dorsal equal to twice the length of its base. Adipose fin 
long as in Noturus, opposite to and longer than anal. Caudal rounded. D.1I,6; A. 
BAe VenL. 8. 
Described from specimen No. 36,685, United States National Museum, six inches 
long, from Huntsville, Alabama. 
The yellow cat or chubby cat is found from the Great Lakes to Virginia 
and Texas, It has many varieties, three of which are mentioned by 
Prof. Cope as occuring in Pennsylvania, two of them in the Ohio river 
and its tributaries and the third in Lake Erie. The species is not credited 
to the region east of the Alleghenies. 
The length of the yellow catsometimes reaches two feet, but averages 
much less. Nothing special is recorded about the habits of this species. 
It is most abundant in sluggish streams. 
16. Amiurus vulgaris (Tuompsoy). 
The Long-jawed Catfish. (Figure 24.) 
This catfish has a stout body ; its depth ‘is one-fourth of the total. length without 
caudal. The head is contained about threeand three-fourths times in thislength. Eye 
very small. Mouth large ; jaws equal or lower jaw sometimes projecting. Barbels 
long ; maxillary barbel as long as head. 
The length of the dorsal base is less than one-half that of the anal, while its height 
is five-sixths of the same length. Adipose fin well developed. The pectoral spine is 
stout and about two-thirds as long as the fin. Caudal square. Anal rounded. 
Least depth of caudal peduncle contained two and one-third times in greatest depth 
Om Podlyen Dh 1G 7Aj 180) iV. 1/8. 
Described from No. 31,946, United States National Museum, twelve inches long, 
from Winnipeg, Manitoba. 
The long-jawed catfish isfound in the Great Lake regionand westward 
to Manitoba. It is believed to be very nearly related to the common 
catfish, A nebulosus, but its projecting lower jaw will serve to distin- 
guish it. This character, however, we know by experience is not so sat- 
 isfactory as it might be. 
This catfish is occasionally taken in the Ohio river, but it is more 
abundant in Lake Erie. The species reaches a length of eighteen inches 
and a weight of four pounds. 
