CENTRARCHIDZ. 43 
lines; opercular flap pretty long, rather narrow, its lower margin being 
shorter than the upper, directed more obliquely upward than in the 
other species, bordered above and below with pinkish, many of the 
scales of the back and sides marked with a short horizontal black line 
like a pencil-mark, these usually forming interrupted lines along the 
rows of scales. These markings are often obsolete. Fins dark olive, 
only the anal usually with red; no black dorsal spot. 
Length of specimens examined about 4 to 5 inches. 
Habitat.—Tennessee River (Agassiz, Cope); Etowah River (Jordan) ; 
White River, Indiana (Jordan); Mississippi River at Cairo (Jordan). 
This species may be known to be a Xenotis by the ear-flap and the 
weak gill-rakers. From the other Ohio species, its longer spines, dark 
green coloration, and the peculiar upward direction of the opercular 
flap distinguish it. The black streaks which suggested the name in- 
scriptus usually disappear with death. 
27. LEPIOPOMUS PALLIDUS, (Jlitcehill) Gill & Jordan. 
Labrus pallidus, MITcHILL, 1814, = Labrus appendix, MITCHILL, 1818, = Pomotis incisor, 
Cuv. & VAaL., 1831. 
We have here restored the oldest and therefore correct specific name 
to this species. The genus Helioperca, recently proposed by me for 
this species and its immediate relatives, does not seem sufficiently dis- 
tinct from Lepiopomus. I therefore abandon it, for the present, at least. 
28. MICROPTERUS PALLIDUS, (Rajinesque) Gill & Jordan. 
Lepomis pallida, RAFINESQUE, 1820, = Cichla floridana, LE SuEUR, 1822, —= Huro nigri- 
cans, C. & V., 1828. 
4 Rafinesque’s description of his Lepomis pallida seems to have been 
drawn from this species. His specific name should therefore be adopted. 
This change is especially desirable, as it does away with the objection- 
able local name floridanus for this widely distributed species. 
PERCID AL. 
29. STIZOSTETHIUM, Rafinesque. 
The American species of this genus have been involved in consider- 
able confusion, and no one seems to know positively whether we have 
