Jordan and Evermann. Fishes of North America. 991 



jaws, vomer, palatines, tongue, ectopterygoids, and entopterygoids ; lin- 

 gual teeth in 2 patches ; pharyugeal teeth pointed. Gill rakers long 

 and strong, compressed, numerous, about 20 in number, some of them on 

 the upper portion of the arch. Brauchiostegals 7. Operculum emargi- 

 nate, the lower point much the larger, striate, the ridges terminating in 

 small spines; preopercle, interopercle, subopercle, suborbital, and pre- 

 orbital with their inferior edges conspicuously serrate ; deutaries and 

 preopercle with large muciferous depressions or pits. Dorsal fin with 

 about 13 spines; anal usually with 7 spines. Caudal emarginate. Scales 

 strongly ctenoid. California. (ap^of, anus ; oTrAm/f, armature.) 



1386. AKCHOPLITES 1NTERRUPTUS (Girard). 

 (SACRAMENTO PERCH.) 



Head 2f ; depth 2ij eye very large, 4 to 5 in head. D. XII or XIII, 10; 

 A. VI or VII, 10 ; scales about 7-40 to 51-14, about 8 series on cheek. 

 Body oblong, ovate, compressed, the back considerably elevated ante- 

 riorly, depressed over the eye, the snout projecting at an angle. Mouth 

 terminal, very large, the maxillary very broad, extending beyond pupil. 

 Dorsal spines rather low, strong; anal spines similar; pectoral short, 

 barely reaching anal. Color blackish above, sides silvery, with about 7 

 vertical blackish bars, irregular in form and position and more or less 

 interrupted ; body sometimes almost wholly black ; sometimes brassy ; 

 a black opercular spot ; fins nearly plain. Length 1 to 2 feet. Sacra- 

 mento and San Joaquin rivers and tributary lakes; abundant; the only 

 fresh-water Percoid west of the Rocky Mountains; an excellent food- 

 fish, now being exterminated by the carp and catfish, which infest its 

 spawning grounds, (interruptus , interrupted.) 



Centrarclius interruptus, GIRARD, Proc. Ac. Nat. Sci. Phila., 1854, 129, San Joaquin and Sac- 



ramento rivers. (Colls. Drs. Heermann and Newberry.) 



Gentrarckus maculosus, AYRES, Proc. Cal. Ac. Nat. Sci., j, 1854, 8, Sacramento River. 

 Ambloplites interruptus, GIRARD, Pac. B. R. Surv., x, 10, pi. 2, figs. 1-4, 1858; BOULENGER, Cat., i, 12. 

 Archoplites interniptus, JORDAN & GILBERT, Synopsis, 466, 1883; Bollman, 560, pi. 69, fig. 1. 



455. CH^ENOBRYTTUS, Gill. 

 (WARMOUTHS.) 



Chsenobri/ttus, GILL, Amer. Journ. Sci. Arts, 92, 1864, (mdanops gidosus). 

 Glossoplites, JORDAN, Manual of Vertebrates, Ed. i, 223, 1876, (melanops). 



This genus has the general form and dentition of Ambloplites with 

 the convex opercle, 10 dorsal and 3 anal spines of Lepomis. Preopercle 

 entire. Branchiostegals 6. Caudal fin emarginate. Scales weakly 

 ctenoid. Vertebras 13-f- 16=29. Posterior processes of the premaxil- 

 laries extending nearly to the frontals ; frontals posteriorly with a 

 transverse ridge connecting the parietal and supraoccipital crest, which 

 are very strong, (xaivu, to yawn ; Bryttus, i. e. Lepomis.) 



