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SILURIDZ. - 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, AMIURUS MARMORATUS, (Holbrook) Jordan. 
Marbled Catfish. 
(Figs. 36 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 differs 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, (Rafinesque) Jordan & Copeland. 
Small Black Catfish. 
(Figs 38 and 39.) 
Silurus melas, RAFINESQUE (1820), Quart. Journ. Sci. Lit. Arts, London, 51. 
Pimelodus melas, RAFINESQUE (1820), Ichthyologia Ohiensis, 66. 
Amiurus melas, JORDAN & COPELAND (1876), Check List, 159. 
Pimelodus catulus, GIRARD (1858), U. 8. Pac, R. R. Surv. 208. 
Amiurus catulus, GILL (1862), Proc. Bost. Soc. Nat. Hist. 44.—Coprr (1870), Proc. 
Am. Philos. Soc. 485.—JORDAN & COPELAND (1876), Check List, 159. 
Pimelodus confinis, GIRARD (1859), Proc. Acad. Nat. Sci. Phila. 159. 
Amiurus confinis, GILL (1862), Proc. Bost. Soc. Nat. Hist. 44.—Copr (1870), Proce. 
Am. Philos. Soc. 486.—JORDAN (1876), Man. Vert. 301.—NELSON (1876), Bull. 
Is. Mus. Nat. Hist. 50.—JoRDAN & COPELAND (1876), Check List, 159. 
Amiurus obesus, GILL (1862), Proc. Bost. Soc. Nat. Hist. 45.—JorpDan & COPELAND 
(1876), Check List, 159.—GILL (1876), Ich. Capt. Simpson’s Explorations, 420. 
Amiurus nebulosus, COPE & YARROW (1876), Zodl. Lieut. Wheeler’s Surv. West of 100th 
Meridian, v, 640 (exel. syu.). 
Amiurus pullus, NELSON (1876), Bull. Ills. Mus. Nat. Hist. 50 (not P. pullus De K.). 
This species occurs abundantly throughout the Mississippi Valley, 
replacing the allied species catus. Prof. Cope considers it a variety of 
catus; 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 
