1936] Schultz: Keys to Fishes 167 



3b. Interorbital space flat or slightly concave, of medium width; meseth- 

 moid processes but little or not at all elevated, ventral process of ba- 

 sisphenoid rudimentary; cranial ridges and spines moderately strong; 

 lower jaw moderately or not much, sometimes not at all, projecting; 

 gdl rakers usually long and slender; anal III, 6 to 8; deep water 

 species. 



14a. Supraocular spine absent; base of skull strongly curved. 



15a. Premaxillaries without prominent dentigerous knobs ; lower jaw 

 somewhat projecting; parietals not meeting. 



16a. Gill rakers 10+22 to 23, the longest 2 /$ orbit; dark bars on 

 sides faint becoming obsolete with age; lower jaw much pro- 

 jecting; peritoneum black. Range: Southeastern Alaska and 

 southern California. Marine. 

 Olive-backed Rockfish 191. Sebastodes saxicola (Gilbert) 



16b. Gill rakers 10+21, slender, 2^ in orbit; no distinct dark 

 cross bars; lower jaw scarcely projecting; peritoneum dark 

 brown. Range : Coast of Oregon. Marine. Rare. 

 192. Sebastodes crameri Jordan 



16c. Gill rakers 12 or 13+29 or 30, the longest l / 2 orbit; anal III, 

 6 or 7 ; peritoneum black. Range : Swif tsure Shoal, B. C., to 

 Monterey, California. Marine. Not common. 



193. Sebastodes wilsoni Gilbert 



15b. Premaxillaries with prominent dentigerous knobs, between 

 which the tip of the lower jaw fits; mandible not projecting; 

 gill rakers very long and slender, y 2 orbit, 9 to 11+22 to 25. 

 Range: Nanaimo, B. C, to Coronado Islands. Marine. Not 

 common. 



Lobe-jawed Rockfish 194. Sebastodes diploproa (Gilbert) 



14b. Supraocular spine present, fig. 41, quite strong; coronal and nu- 

 chal spines usually present ; 2nd anal spine equaling 3rd in length ; 

 anal III, 7; lining of mouth and gill cavity largely black. Range: 

 Bering Sea to Santa Barbara, California. Marine. 

 Alaskan Red Rockfish 195. Sebastodes introniger (Gilbert) 



3c. Interorbital space as a rule concave and narrow ; the cranial ridges and 

 spines well developed ; base of skull straight or nearly so ; mesethmoid 

 processes directed upward; ventral processes of basisphenoid well de- 

 veloped; gill rakers usually short. 



17a. Supraocular spine present; interorbital space concave. 



18a. Second anal spine scarcely longer than 3rd; color red, nearly 

 plain ; cranial ridges broken and armed with accessory spines, 

 except in the young (the ridges begin to break up into sep- 

 arate spines at about 20 cm. standard length) ; interorbital 

 space nearly flat in adult (ridges smooth, interorbital space 

 concave in young, as in Sebastodes rosaceus) ; peritoneum 

 white; the distal y 3 to l / 2 of the ventral, anal, and caudal 

 fins of the young are black in color, fading proximally; the 

 pectorals and soft dorsal fins are generally blackish; the black 

 color of the fins is still evident on 20 cm. specimens. Range : 

 Southeastern Alaska to San Diego. Marine. Common. 



Red Rockfish. Red Rockcod. Red Snapper 



196. Sebastodes ruberrimus Cramer 



