Jordan and Evermann. Fishes of North America. 2349 



w'. Pectorals small but well developed, 

 much longer than eye. 



XIPHISTES, 909. 



ww 1 . Pectorals minute, not longer than 



CEBEDICHTHYIN^: 6ye ' XIPHIDION, 910. 



mm 1 . Dorsal fin with its posterior half composed of soft rays; gill mem- 

 branes broadly united, free from isthmus; ventrals wanting; 

 lateral line single, high; pyloric caeca present; herbivorous. 



CEBEDICHTHYS, 911. 



DlCTYOSOMATIN^E : 



II 1 . Body covered with crosswise tubes at right angles with the lateral line 



and forming a network with it. 



x'. Dorsal fin of spines only; teeth strong; ventral fins present, well 

 developed; gill membranes broadly united, free from the 

 isthmus. PLAGIOGRAMMUS, 912. 



kk'. Pectoral fins long and rounded or pointed, nearly as long as head; dorsal fin 

 high ; gill membranes broadly united, free from the isthmus ; no lateral 

 line ; species probably all herbivorous. 

 OPISTHOCENTRINJE : 

 y'. Ventral fins wanting. 



z'. Dorsal with its posterior spines rigid and sharp; head scaly. 



OPISTHOCENTRUS, 913. 



zz'. Dorsal with its spines all flexible ; head naked. PHOLIDAPUS, 914. 

 PLECTOBRANCHIN.E : 



yy 1 . Ventral fins well developed; dorsal spines all pungent; body greatly 



elongate. PLECTOBRANCHUS, 915. 



jj 1 . Gill openings continued forward below, the membranes separate or nearly so, 



scarcely joined to the isthmus; pectorals and ventrals well developed; dorsal 



spines slender, pungent, the fin without soft rays; herbivorous species. 



LUMPENINJE : 



a". Lateral line obsolete or obscure; body greatly elongate. 



6". Pectorals with the upper and middle rays shortened, shorter than lower; 

 teeth on vomer and palatines. LEPTOCLINUS, 916. 



66". Pectorals with the middle rays longest. 



c". Lateral line not wholly obsolete, a series of distant pores along 

 sides ; teeth on vomer and palatines. POROCLINDS, 917. 



cc". Lateral line obsolete, only a few small pores being traceable; no 

 teeth on vomer; palatine teeth small or wanting. 



LUMPENUS, 918. 

 STICH^EIN^E : 

 aa". Lateral line present, single, double, or triple; body moderately elongate; 



teeth on jaws, vomer, and palatines. 



d". Lateral line simple, one on each side of back. STICH^US, 919. 



dd". Lateral lines 2, or dividing into 2 on each side. ULVARIUS, 920. 



ddd". Lateral line forking, forming 3 on each side. EUMESOGRAMMUS, 921. 



868. ENNEANECTES, Jordan & Evermann. 

 Enneanectes, JORDAN & EVERMANN, Proc. Cal. Ac. Sci. 1895, 501 (carminalis). 



Body rather robust, covered with large, rough ctenoid scales; lateral 

 line almost obsolete; mouth moderate, the jaws equal; no tentacle above 

 the eye or on nape; no hook on shoulder girdle; eye large; dorsal tin 

 divided into 3 fins, the first of 3 or 4 slender spines, the second of about 

 10, the soft dorsal of about 7 rays; caudal rounded; anal fin long; pec- 

 toral long, the lower rays simple and thickened. Small fish of the rock 



