SILURID^. 89 



ous specimens from the Red River of the North, from the Mississippi 

 River at Saint Louis, and from the Illinois River, differs somewhat in 

 proportions ; but I think it specifically identical with A. vulgaris from 

 Lake Erie. 



14. AMIDRUS M ARMOR AT US, (Eolbroolc) Jordan. 



Marbled Catfish. 

 (Figs. 3G and 37.) 

 Pimelodus marmoratus, Holbrook (1855), Journ. Acad. Nat. Sci. Phila. 54. 



Habitat. — Georgia to Florida. 



This beautiful and singular species seems to have been overlooked 

 by all writers since the original description. The characters given in 

 the preceding analysis are taken from a specimen sent by Dr. Holbrook 

 to the United States National Museum. It difl'ers from catus chiefly 

 in the coloration. I have been informed that similarly colored Catfishes 

 occur in Pennsylvania, and I have seen a crayon sketch of one such 

 by Mr. J. H. Richard„ 



15. AMIURUS MELAS, {Rajinesque) Jordan & Copeland. 



Small Black Catfish. 

 (Figs 38 and 39.) 

 Sihirus melas, Rafinesque (1820), Quart. Journ. Sci. Lit. Arts, London, 51. 

 Pimelodus melas, Rafinesque (1820), Ichthyologia Ohiensis, 66. 

 Amiurus melas, Jordan & Copeland (1876), Ciieck List, 150. 

 Pimelodus catnlus, Girard (1858), U. S. Pac. R. R. Surv. 208. 



Amiurus catulus, Gilt, {lSiJ2),FroG. Bost. Soc. Nat. Hist. 44.— Cope (1870), Proc. 

 Am. Philos. Soc. 485. — Jordan & Copeland (1876), Check List, 159. 

 Pimelodus confinis, Girard (1859), Proc. Acad. Nat. Sci. Phila. 159. 



Amiurus covfinis, Gill (1862), Proc. Bost. Soc. Nat. Hist. 44. — Cope (1870), Proc. 

 Aiu. Philos. Soc. 486.— Jordan (1876), Man. Vert. 301.— Nelson (1876), Bull. 

 His. Mus. Nat. Hist. 50.— Jordan & Copeland (1876), Check List, 159. 

 Amiurus oiesus. Gill (1862), Proc. Bost. Soc. Nat. Hist. 45. — Jordan & Copeland 



(1876), Check List, 159.— Gill (1876), Ich. Capt. Simpson's Explorations, 420. 

 Amiurus nebulosus, Cope & Yarrow (1876), Zool. Lieut. Wheeler's Surv. West of 100th 



Meridian, v, 640 (excl. syn.). 

 Amiurus pullus. Nelson (1876), Bull. Ills. Mus. Nat. Hist. 50 (not P. pullus De K.). 



This species occurs abundantly throughout the Mississippi Yalley, 

 rej^laciug the allied species catus. Prof. Cope considers it a variety of 

 catvs; but the short deep body and small anal fin thus far have served 

 to distinguish it. The coloration of the anal fin is somewhat character- 

 istic. The membrane is unusually black and contrasts with the pale 

 rays. 



Girard's types of confinis and catulus appear to be the shortened or 



