(67) 
157. Amiurus catus (L.) Grill. Bull-head. (M. V. 332; Amiurus 
atrarius Nelson 332.) 
Great Lakes and their tributaries. Vermilion B.; 111. B.; Mc- 
Lean Co. 
158. Amiurus marmoratus (Holbrook) Jordan. Marbled Cat. (M. Y. 
332.) 
Numerous specimens of a cat-fish, marbled in color, and not ev- 
idently distinguishable from A. marmoratus , Holbrook, were col- 
lected by Professor Forbes in southern Illinois, and one or two 
from Illinois Biver. Considerable variation is shown in the col- 
oration, some being nearly plain, others much variegated. In one 
specimen, the broad head with depressed front much resembles 
that of A. xanthocephalus. In all the adipose fin is very large 
and the dorsal spine is quite high. Henry, 111., Johnson Co. 
159. Amiurus melas (Baf.) Jordan & Copeland. Black Cat. (M. Y. 
332; A. conjinis and A. pullus Nelson 50.) 
Abundant in the streams of the southern half of the state. 
McLean Co., Union and Johnson Co’s., (Clear Cr., Bottoms, 
Cache B.) 
160. Amiurus xanthocephalus (Baf.) Gill. Yellow-headed Cat. ’(M. 
Y. 333; A. alhidus Nelson 50.) 
Common in the southern part of the state. This is not “our com- 
monest cat-fish” as stated by Mr. Nelson. [The specimens, upon 
which Mr. Nelson based this statement were labeled nebulosus in 
the collection (given as a synonym of alhidus in M. V., first edi- 
tion,) but have been identified with catus by Hr. Jordan. S. A. 
F.] Peoria. 
Genus PELODICHTHYS, Rafinesque. 
161. Pelodichihys olivaris (Bafinesque) Gill & Jordan. Mud Cat. (M. 
Y. 334 ; Hopladelus olivaris Nelson 50.) 
Common in the larger streams, reaching a large size. Peoria. 
Genus NOTURTJS , Rafinesque. 
162. Noturus flavus Bafinesque. Yellow Stone Cat. (M. Y. 335; 
Nelson 50.) 
Bather common, especially southward and in the larger streams. 
163. Noturus exilis Nelson. Slender Stone Cat. (M. Y. 335 ; Nel- 
son 51.) 
Besides Mr. Nelson’s types, which were from McLean Co., 1 
have obtained specimens from Boot B., Wis., and from Kansas. 
