14 Field Columbian Museum —Zoology, Vol. V. 



Color dark slaty blue, belly white, somewhat marbled with 

 brownish; all of the fins very dark. 



While in the Midland Bridge Company's Camp at Rio Blanco, 

 one of the men caught a cattish 25 inches in length, which I identify 

 with this species. The following are some of the notes made con- 

 cerning it: total length, 25 inches; length to base of caudal 21^ 

 inches; length of head 5^ inches; depth 5^ inches; length of base 

 oi anal 6 inches; bridge from snout to dorsal fin not complete; max- 

 illary teeth without backward extension; caudal fin forked, but not 

 sharply, its lobes rounded; inner margin of pectoral fin but slightly 

 serrate; body marked with dark blotches, barge catfish are reported 

 from all of the large rivers which I visited south of Vera Cruz, but 

 the specimen noted above is the only large one I saw. 



9. Amiurus lupus (Girard). Bagre; Petonte. 



Pimelodus lupus Girard, Pac. R. R. Sur.,x, 211, 1S5S; Rio Pecos. 



Amiurus lupus Giinther, Cat., v, 101, 1864. 



Ameiurus lupus Jordan & Evermann, Bull. 47, U. S. Xat. Mus., 

 [896, [37. 



Rivers of northeastern Mexico and southeastern Texas. (San 

 |uan; Montemorelos ; Linares; La Cruz; Garza Valdez.) 



Head 3% ; depth 4 ' ^ to 4 ' j ; D. 1. b ; A. 23 or 24. Body elongate, 

 moderately compressed; head flat above, narrowed forward; upper 

 law the longer; interorbital area 2 l / 3 in head; snout 2 2 / 3 in head; diam- 

 eter <»f eye .; -'.; in head ; maxillary barbel reaching almost to tip of pec- 

 toral spine; outer mandibular}' barbels reaching to base of pectoral; 

 origin oi dorsal nearer tip oi snout than adipose fin; dorsal spine 

 rather long and slender, its length t| in head, weakly serrate on 

 hinder margin; pectoral spine strong, with 7 to q retrose teeth on 

 hinder margin (these becoming somewhat smaller in specimens 12 

 niches in length); pectoral spine m 4 in head; base oi anal tin longer 

 than head. 3^ to 3% in body; caudal tin deeply forked. 



Color slaty brownish above, lighter below; sides finely punctulate ; 

 occasionally a few black spots on side made up oi dots; tins dusky 

 with more or less orange base; margin oi vertical tins black. Length 

 about iS inches. 



This species very much resembles in color and form 1 ' chthy&lurus 

 punctatus, from which it differs in having a somewhat less forked tail, 

 larger eve. and a shorter anal. The supraoccipital is entirely separate 

 the interspinal buckler which makes it a true Amiurus. This 

 Species is abundant in the streams of northeastern Mexico. It lives 

 mostlv in river channels. 



