940 FISHES — CENTRA RCHID^. 



I^omis gulosus, Cope, Journ. Acad. Nat. Sci. Phila., 1869, 223. 



Chcenobryitus melanopa, Nblson, Bnll. Ills. Mns. Nat. Hist., 1876, (not Calliurus melanopa, 



Grd.). 

 Gloesoplites melanops, Jokdan, Man, Vert., 1876, 223, 317, 

 Chcenolrytlus antistius, McKay, Proc. U. S. Nat. Mus., 1881^ 88. 



Description. — Body heavy, depp and thick, stouter and thicker than in the southern 

 ClicenobryUua gulosus ; depth 2-i in length ; head about 2| ; month large, its maxillary 

 reaching nearly to posterior margin of eye — the supernumerary bone strong; scales on 

 the cheeks in 7 to 9 rows, rather smaller than in gulosus ; mucous pores about head very 

 large ; operonlar flip rather large and broad but not long ; dorsal inserted anteriorly, 

 the first spine being over the ear-flap ; spines very stout, the longest as long as from 

 snout to middle of eye ; color in spirits very dark, almost black ; three oblique bands 

 across the cheeks and a black opercular spot, pale-margined below, as large as the eye ; 

 young specimens are profusely mottled, as are the young of Ambloplites, and farther- 

 marked with vertical chains of spots ; in life, adults dark olive-green above, sides green- 

 ish and brassy, with blotches of pale blue and bright coppery red, the red predomina- 

 ting ; belly bright brassy yellow, profusely mottled with bright red ; lower j iw chiefly 

 yellow ; iris bright red ; opercular spot as large as eye, black, bordered below with cop- 

 per color ; 3 or 4 wide dark red bands radiating backward from across cheeks and oper- 

 oles ; separated by narrow pale blue interspaces ; upper fias barred with black, orange, 

 and blue, the former color predominating ; lower flos dusky ; a small black spot on last 

 rays of dorsal, with a few dusky specks around it. Tnis species is best distinguished 

 from Ch. gulosus, by the position of the dorsal, the fiist spine being situated over the 

 opercular lobe, while in 0. gulosus the first spine is situated directly over the posterior 

 portion of the base of the pectorals. Length 8 to 12 inches. 



Habitat, Lake Michigan. Mississippi Valley, chiefly northwestward. Michigan 

 (Cope), Lake Michigan (Jordan), Illinois Eiver (Forbes, Nelson), Wabash River (Jordan). 



This species has not yet been recorded from Obio, but it doubtless occurs in the west- 

 em part of the State and in the Ohio Eiver. 



Ic is a stout, voracious species, strongly resembling the Rook Bass, lb is " gamey," 

 and is, where abundant as in the Upper Mississippi, valued as a pan-fiah. All the speci- 

 mens examined from the Galf States, belong to the allied species or variety C. gulosus. 



Diagnosis. — This is the only one of our Ohio fijhes which has teeth on 

 the tongue, three spines in the anal fin, and ten in the single dorsal 

 fin. 



Genus 66. AMBLOPLITES. Eafinesque. 



Amhloplites, Rafinesque, Ich. Oh., 1820, 83. — Agassiz, Am. Journ. Sci. and Arts, 



1854, — , 

 Centrarchus, Cvv. and VaL., 1831, and of many authors. 



Type, Lepomis iciheloides, Raf = Bodianus rupestris, Raf. 



Etymology, amblus, blunt ; oplites, armed. 



Dorsal fin much more developed than anal fin, the soft parts of the two fins about 

 equal and terminating at the same vertical behind ; dorsal fin with 11 or 12 (10 to 13) 

 spines; anal normally with 6 (5 to 7); caudal fin emarginate ; scales ctenoid; month 

 large, teeth on vomer, palatine and pterygoid bones ; a single large patch of teeth on 



