526 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



%. 



Jordan, Bull. V. S. Nat. Mus. x, 47: Stizoslctliiirm ritmnn var. salmoncum Jordan, Man. 

 Vert. ii, '2:50, the "Blue Pike," a local variety in Ohio and southward ; bluer, with the 

 body shorter and deeper, the size smaller.) 





 flrt. Pylorie cceca small, unequal, 4 to 7 in number. (Cynopcrca Gill & Jordan.*) 



28. S. ran tide asset (Smith) Jor. Sauger; Sand-pike; Gray-pike; Horn-fish. 



Olive gray above, sides brassy or pale orange, with much dark mot- 

 tling ; young pale orange with large dark lateral shades ; spinons dorsal 

 with U or 3 rows of round black spots ; no distinct black blotch on 

 the posterior part of the fin ; a large black blotch at base of pectorals ; 

 second dorsal with about 3 rows of irregular dark spots ; caudal dusky 

 and yellowish. Body elongate, more terete than in the preceding. Head 

 quite pointed, depressed, about 3i in length ; depth 4-5. Eye small, 

 5 in head. Opercular spines varying in number and size. D. XIII-I, 

 18 ; A. II, 12 ; Lat. 1. 95. Pylorie cceca 4-7, smaller than in S. mtreum. 

 L. 15 inches. Great Lake region, Upper Mississippi and Ohio Rivers. 



(Ludopcrca canadensls C. H. Smith, MSS. in Griffith's edition Cuvier's Animal King- 

 dom, x, 27"), 183(5: Ludopcrca canadcnsis Giinther, i, 75: Ludopcrca grisca DeKay, N. 

 Y. Fauna, Fishes, 1842, 19; Ludopcrca arisca Giinther, i, 70; Jordan, Bull. U. S. Nat. 

 Mus. x, 48 : Lucioperca borea Grd., Proc. Aead. Nat. Sci. P'hila. 1857.) 



FAMILY LXXXVL SERRANID^E. 



(The Sea Bass.) 



Body oblong or elongate, more or less compressed, covered with adher- 

 ent, ctenoid (rarely smooth) scales of moderate or small size. Mouth 

 horizontal or little oblique, usually large. Premaxillary protractile. 

 Maxillary broad, with or without a supplemental bone, its posterior part 

 not slipping under the edge of the preorbital. Jaws with bands of teeth, 

 some of the teetli sometimes enlarged and canine like; no incisors nor 

 molar teeth; vomer and palatines with bauds of villiform teeth; tongue 

 some! imes with teeth ; ptcrygoids toothless. Gill-rakers usually stiff and 

 rather long, armed with teeth. Gills 4, a long slit behind the fourth. 

 Psendobranehia' large. Lower pharyngeals separate, rather narrow, 



".Ic.nl.-m, Bull. U. S. Nat. Mus. x, 48: type Lucioperca cdiitnlriisix Smith, xvov, dog; 



!, pereh. 



tThree varieties of this species may usually he recogiii/ed : 



. Var. ratiailfusr, of the St. Lawrence region, with the opereles and bones of the head 



eonsideraldy rougher, the number of operenlar spines, \vhieh are merely the free 



ends of the sf ri;e. inereased : t lie head is also more eloseh :iml extensively scaly : 



1>. Var. i/i-ini'inii (DeKay), the common form of the (in-at Lake region, described above ; 



and 



r. \ar. Ixiriinn ('-r>\. from the I'pper Missouri region, with the head slenderer. 

 These forms iutergrade and are doubtless varieties of the same species. 



