and its Tributaries. 335 
P. limosus. Raf. Mud-Cat. 
Pimelodus limosus. Mud Cat-fish. Rafinesque, Ichth. Ohien. p. 66. i 
" nebulosus. € te = “ “ p.64. (A variety 
-) 
s * » s Kirtland's Report, pp. 169, 194 ; catalogued, 
not described. 
» " " " Dekay's Report, p. 187 ; not described. 
Plate XXIX. Fig. 3. 
Head flat, compressed above and beneath, not as wide as 
the body, but exceeding its perpendicular diameter, one quarter 
of the total length. The extremity of the lateral barb attains 
to the pectoral fin ; the two middle of the four inferior barbs 
stand forward of the line of the two exterior; the two superior 
are anterior and superior to the eyes. Lower jaw the longer, 
Projecting, Eyes small, circular. 
ody declivous and depressed before the dorsal fin, com- 
Pressed laterally behind it; abdomen protuberant laterally, 
flattish beneath. 
Dorsal Jin equal to the pectoral, the spinous ray invested 
with a membrane. 
Caudal fin flat, truncate, entire. 
Anal fin rounded, its tip extends near to the commence- 
ment of the dorsal and beyond the adipose. 
Ventral fins situated in a sulcation formed by the sudden 
contraction of the abdomen. 
Pectoral fins falcated, the posterior edge of the spinous ray 
Serrated, 
Saler dusky, clouded with irregular muddy spots on the 
head and back, and lighter gray on the abdomen and throat. 
Length eighteen inches. 
Hab. Ohio River. 
D. 1—71; €. 90; A. 15; V. 9; P. 1—10 rays. 
Observations, "The muddy clouded color, and the flat- 
nir aud elongated form, distinguish it at once from every 
