Jordan and Evermann. Fishes of North America. 2197 



I. DEEP-BODIED SPECIMENS (Dormitator latifrons, Richardson). 



Head 3 ; depth 3. D. VII-1, 8 ; A. I, 8 or 9 ; scales 30 to 33 ; eye 4f to 5J 

 in head; snout 3 to 3 in head; interorbital width 2$ in head; ventrals 

 reaching - the distance to vent, 1-J- to If in head; highest anal ray If to 2 

 in head. Body short, robust, the back elevated; head broad and flat 

 above, the anterior profile from first dorsal spine to tip of snout oblique, 

 descending abruptly; mouth oblique, maxillary reaching anterior margin 

 of orbit; lower jaw little projecting. Color greenish, lighter below; 

 body with cross bars of dark brown; fins dusky, the dorsals distinctly 

 blotched with darker ; a dark cross bar at base of pectorals ; a dark-blue 

 humeral blotch, becoming blackish in spirits; 3 or 4 dark cross bands 

 extending from eye and below eye to posterior margin of preopercle; a 

 dark band extending from below eye to below tip of maxillary. Two 

 specimens from Rio Presidio, Mazatlan. 



II. COMMON FORM, AT MAZATLAN. 



Head 3 ; depth 3f to 3|. D. VII-I, 7 ; A. I, 8 ; scales 33 or 34 ; eye 4 to 

 4f in head; snout 3 to 4 in head; interorbital width 3 to 3^ in head; 

 ventrals reaching about f- the distance to vent, 1J in head; highest anal 

 ray If to 2 in head. Body short, compressed, the back little elevated; 

 head rather broad and slightly convex above, the anterior profile from 

 first dorsal spine to tip of snout slightly convex; mouth oblique, maxil- 

 lary reaching anterior margin of orbit; lower jaw little projecting. Color 

 olive brown, with cross bars of darker brown, lighter below; fins dusky, 

 the dorsals with about 3 darker cross bars; pectorals with a darker cross 

 bar at base; a distinct dark-brown humeral spot slightly larger than eye; 

 3 or 4 dark cross bands extending from eye and below eye to posterior mar- 

 gin of preopercle ; a distinct dark-brown bar extending from below eye 

 to below tip of maxillary; a dark lateral band extending from base of 

 pectoral to base of caudal. Many specimens from Mazatlan. 



III. LARGE-HEADED FORM. 



Head 3^; depth 3. D. VI-I, 8; A. I, 9; scales 32 or 33; eye 4 in head; 

 snout 3 in head ; interorbital width 2| in head ; ventrals reaching f- the 

 distance to vent, 1 in head; highest anal ray 2 in head. Body mod- 

 erately compressed, the back little elevated; head very broad above, 

 convex ; the anterior profile from first dorsal spine to tip of snout oblique, 

 gently descending; mouth oblique, maxillary reaching anterior margin 

 of orbit; lower jaw little projecting. Color brownish, middle of back 

 darker, lighter below ; body with darker cross bands ; ventrals yellow- 

 ish; other fins dusky; dorsals with darker blotches; a dark crossbar at 

 base of pectoral; a dark humeral spot; four cross bands extending 

 from eye and below eye to posterior margin of preopercle ; a dark band 

 extending from below eye to below top of maxillary; a dark lateral 

 band extending from base of pectoral to base of caudal. One specimen, 

 from near Mazatlau. (maculatus, spotted.) 



