172 University of Washington Publications in Biology [Vol.2. 



4b. Fourth lateral line ends near middle of length of ventral fin rays. 



5a. Fourth lateral line unbranched ; dermal flaps 2 times in diameter 

 of eye. Range : Kamchatka to San Francisco. Marine. Common. 

 Greenling 214. Hexagrammos stelleri Tilesius 



5b. Fourth lateral line branched, lower branch running to base of ven- 

 tral fin insertion, the other continuing to about under the middle of 

 pelvic fin rays ; a pigment spot above base of pectoral ; dermal flaps 

 less than 2 times in the eye. Range : Alaska, westward to Petro- 

 paulski and Robben Islands. Marine. Common. 

 Alaska Greenling 215. Hexagrammos octogratnmus (Pallas) 



Family 67. Ophiodontidae. Ling Cod 



Range: Alaska to San Diego, California. Marine. Abundant. 



Ling Cod. Cultus Cod 216. Ophiodon elongatus Girard 



Family 68. Cottidae. Sculpins. Bullheads 



la. Spinous dorsal not evident, its spines slender and hidden in loose skin or 

 indistinguishable from soft rays ; head and body hidden in smooth lax skin ; 

 gill membranes broadly joined to the isthmus; no teeth on vomer or pala- 

 tines ; ventrals I, 3 the base adnate to body. 



2a. Spinous dorsal of short, slender flexible spines entirely embedded in the 

 skin and not visible without dissection. Range : Kodiak Island to Puget 

 Sound. Marine. Common. 

 Tadpole Sculpin 217. Psychrolutes paradoxus Giinther 



2b. Anterior spinous dorsal rays not bound down by the skin of body, the 1st 

 apparent ray nearly over gill opening. Range : Puget Sound. Marine. 

 Common. 

 218. Gilbertidia sigalutes (Jordan and Starks) 



lb. Spinous dorsal evident and not concealed in the flesh or hidden by loose 

 skin ; spines, bones, or tubercles of head not all hidden in lax skin. 



3a. Pelvic fins entirely absent; skin perfectly smooth; no slit behind the 

 4th gill ; gill membranes free from isthmus ; teeth on vomer and pala- 

 tines. Range: Sitka, Alaska to Fort Bragg, California. Marine. Com- 

 mon. 

 219. Ascelichthys rhodorns Jordan and Gilbert 



3b. Pelvic fins present and well developed. 



4a. Pectoral fins continuous around the throat and joined together; back 

 with spinous scales ; gill membranes free from isthmus ; no slit be- 

 hind last gill ; teeth on vomer and palatines ; preopercle with a short 

 bifid spine ; ventrals inserted far back. Range : Vancouver Island 

 and Puget Sound. Marine. Rare. 

 Manacled Sculpin 220. Synchirus gilli Bean 



4b. Pectoral fins not continuous around the throat and not joined to 

 each other. 



5a. Pelvic fin rays I, 5 ; vomer and palatines with teeth ; gill mem- 

 branes broadly united but free from the isthmus. 



6a. Body more or less scaly above, or with rough plates or prickles. 



