148 CALIFORNIA ACADEMY OF SCIENCES. 



c. Dorsal spine with rather strong recurved hooks on both edges near 

 the tip; height of the spine about equal to the pectoral spine, some- 

 times a little higher, sometimes a little lower. Maxillary barbels 

 reaching to tip of adipose in specimens .22 m. long. wesselii 109. 

 cc. Dorsal spine smooth on its outer edge, its inner edge scarcely if 

 at all roughened. Dorsal spine uniformly one-half a diameter of 

 eye or more shorter than pectoral spine. Maxillary barbels reach- 

 ing to beginning of anal in a specimen .11 m. long, scarcely shorter 

 in larger specimens. gracilis 110. 



aa. Adipose fin 3 or more in the length. 



d. Dorsal I, 6; pectoral fins not extending to the ventral fins; ventrals 

 not to the anal. 



e. Pectoral spine strong, compressed, with 23 or 24 strong, re- 

 curved hooks on its posterior margin, the hooks not as long as 

 the spine is wide; anterior margin with straight, minute teeth 

 on its central half, recurved notches near its tip. Dorsal spine 

 strongly curved, the posterior margin roughened near the tip, 

 numerous recurved hooks on the upper half of the anterior mar- 

 gin. Eye 4 in head; interorbital three-fourths as wide as the 

 orbital diameter. Maxillary barbel to beginning of the adipose fin. 



peclinifer 111. 



ee. Pectoral spine with from 8-15 recurved hooks or teeth; dorsal 

 spine straight. 



/. Color plain, no dark lateral band; free margin of the dorsal 

 rounded. Body rather elongate, slightly compressed posteriorly, 

 head moderately broad and long, depressed, truncate ante- 

 riorly; snout somewhat produced, broad, 2f in head; distance 

 between angles of mouth nearly equal to the length of the 

 snout. Maxillary barbels reaching to the origin of the anal; 

 postmentals to middle of pectorals. Eye 4 in head, 1 in interor- 

 bital, equidistant from snout and gill-opening. Humeral pro- 

 cess distinctly striate. Dorsal somewhat higher than long, the 

 length of its base nearly equal to its distance from the head, the 

 spine slender, stiff, rough superiorly and ending in a ray-like 

 filament. Adipose fin about 3 in the length. Caudal deeply 

 lobed, the lobes pointed, the upper longer, about equal to the 

 head in length. Ventral inserted immediately behind the ver- 

 tical from the dorsal. Pectoral spine not much shorter than 

 the rays, the posterior margin serrate. Head 4|; depth 5J; Br. 6; 

 D. I, 6; A. 12. (Giinther.) modestus 112. 



ff. A dark band on sides, not continued forward on head. The 

 band is sometimes obsolete in alcoholic specimens. 

 g. Snout produced, nearly half the head in length; distance be- 

 tween the angles of the mouth nearly equal to the snout in 

 length. Maxillary barbel reaching to the tip of the pectoral; 

 postmentals to the root of the pectoral. Eye 4 in head, nearer 



