798 F{SHES—SILURID&. 
Glanis limosus, RAFINESQUE (1818), Am. Monthly Mag., ili, 447, and iv, 107 (name only). 
Pilodictis limosus, RAFINESQUE (1819), Journ. de Physique, 422. * 
Pylodictis limosus, RAFINESQUE (1820), Ich. Ohiensis, 67. 
Silurus nebulosus, RAFINESQUE (1820), Quart. Journ. Sci. Lit. and Arts, London, 50. 
Pimelodus nebulosus, RAFINESQUE (1820), Ich. Oh., 64. . 
Silurus viscosus, RAFINESQUE (1820), Qaart. Journ. Sci. Lit and Arts, 50. 
Pimelodus viscosus, RAFINESQUE (1820), Ich. Ob., 66. 
Silurus limosus, RAFINESQUE (1820), Quart. Journ. Lit. and Arts, 51. 
Pimelodus limosus, RAFINESQUE (1820), Ich, Oh., 67.—KIRTLAND (1846), Bost. Journ. Nat. 
Hist., iv, 335.—STORER (1846), Synopsis, 404. 
Pimelodus punctulatus, Cuv. and VAL, (i840), xv, 134.—DEKay (1842), Fishes, N. Y., 187. 
— STORER (1846), Synopsis, 403.—GUNTHER (1864), Cat. Fishes, v, —. 
Pimelodus wneus, CUV. and VAL. (1810), xv, 135.—DEKay (1842), 1. c —STORER (1846), 
5 Gog U3, 
Description Body very long and slender, depressed forwards, closely compressed 
behind; head extremely flat, the lower jaw the longer; barbels short; dorsal spine 
small, half the height of the fin, enveloped in thick skin ; pectoral spine very strong, 
flattened, serrate behind; cauda] fin somewhat emarginate; anal fin short, its base 
about 7 in body ; coloration mottled brown and yellowish, whitish below; bead, 34 in 
length; depth, 54; D., 1,7; A., 15. Length, 2 to 3 feet. 
Habitat, Ohio Valley to Iowa and southward, abundant in the larger streams. 
a 
Diagnosis.—The flat head and strong!y projecting jaw distinguish this 
species at once from our other Catfishes. 
Habits —This species abounds in the Ohio River and its larger tribu- 
taries. It reaches a larger size than any other except Amiurus nigricans 
and is used for food, although its unattractive exterior causes it to be legs 
valued than the other large species, As its name indicates, 1b is pre- 
eminently a mud loving species. 
GENUS 13. NOTURUS. Rafinesque. 
Noturus, RAFINESQUE (1818), Am. Monthly Mag., iv, 41. 
Schilbeodes, BLEEKER (1858), Ichthyolegiw Archipelagi Indici Prodromus, vol. i, Siluri 
(Acta Societarum Indo-Nederlandicex, vol. iv), 258, (S. gyrinus, Mit ). 
Etymology, notos, back ; owra, tail (means tail over back, faf.). 
Type, Noturus flavus, Raf. 
Body more or less elongate, anteriorly subcylindrical, thence more or less compressed ; 
head above ovate and depressed, with a slight longitudinal furrow, branching into a 
transverse depression on the nape; skin very thick, entirely concealing the bones; 
Supraoccipital entirely free from the head of the second interspinal ; eyes small or of 
moderate size; mouth anterior, rather large, and transverse; upper jaw usually more 
or less projecting beyond the lower; teeth subulate, closely set in a broad band in each 
jaw, the lower one interrupted, the upper continuous; branchiostegals nine; dorsal fin 
situated over the posterior half of the interval between the pectoral and ventral fins, 
with a sharp, short, entire spine, and seven branched rays; adipose fin long and low, 
keel-like, its posterior lower margin being adnate to the tail, and usually connected 
with the caudal fin; caudal fin obliquely truncated or rounded, inserted on an 
5 os 
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