Fishes of Upper Georgia. 367 



with Girarcl's Pimelodus vulpeculus* (Proc. Phil. Ac. Sci., 

 1859, 160), but a comparison with Girarcl's type, made as 

 this is passing through the press, assures me of their entire 

 difference. A. vulpeculus has equal jaws,. a truncate caudal, 

 and 22 anal rays. I therefore propose to call my species 

 A. brunneus. 



My specimens show the following characters : — the meas- 

 urements are taken from my largest specimen, which is about 

 six inches long. 



Body slender, elongate, depressed and broad in front, closely compressed 

 behind, the greatest depth only about £ of length. 



Head flat, broad, and long, about 4 in length. 



Upper jaw much longest, projecting more than in any other Amiurus 

 known to me ; mouth wide ; its width half the length of the head ; as 

 great as the greatest depth of the head. Eye rather large, 5 in head and 

 2 1 in the interorbital space (in young of 6 inches) ; the latter broad, flat- 

 tish, its width half the length of head. 



Dorsal fin well forward, nearer snout than adipose fin ; the length of its 

 spine being contained four times between its base and the adipose fin, 

 which is small and narrow, well forward from the caudal, slightly behind 

 end of anal. Spines moderate, serrated. Anal fin short and deep, its 

 base equal to length of caudal, and less than one-fifth the length (without 

 caudal). Caudal fin slightly emarginate, more so than in catits, much 

 less so than in nigricans or albidus. 



D., I, 6. P., I, 8. V., 8. A., 16 to 17. B., 10. 



Color pale olive brown, white below ; a blackish horizontal bar at base 

 of dorsal, distinct in spirits. This species is well marked by its peculiar 

 form, and very short anal fin. It is apparently related to A. platycephalus, 

 but the latter has- the jaws equal and' the anal fin longer. 



Habitat. Amiurus brunneus is extremely abundant in 



* Girarcl's account is as follows : — " We have likewise collected in Charleston, S. C, 

 a Cat-fish, the general form of which is more slender than that of the preceding species 

 (P ', puma) ; the anal fin is deeper and the caudal emarginated; features which will at 

 once differentiate the species to which we give here the name of Pimelodus vulpeculus. 

 The head, which is longer than broad, constitutes the fourth of the total length. The 

 lower jaw is somewhat shorter- than the upper one. The eyes are of medium size; 

 their diameter being contained about eight times in the length of the side of the head 

 and four times only across the interocular space. The anterior margin of the dorsal is 

 somewhat nearer the apex of the snout than the adipose, which is smaller and inserted 

 more anteriorly than in P. 'puma. The caudal fin enters five times and a half in the total 

 length. The base of the anal is equal to the caudal." 



