1936] Schults: Keys to Fishes 177 



26b. Scales in 40 to 60 oblique rows in the longi- 

 tudinal series of scales along the base of dor- 

 sal fin. 



27a. Preorbital cirrus (on front of rim of eye) 

 a large plumose tentacle about twice length 

 of eye ; postorbital cirrus about H eye ; dor- 

 sal IX, 16; anal 13; pectoral 14. Range: 

 Vancouver Island. Marine. Rare. 

 240. Pterygiocottus macouni Bean and Weed 



27b. Preorbital cirrus less than diameter of the 

 eye ; postorbital cirrus very small ; under 

 side of chin marked with cross bars ; dorsal 

 IX to X, 17 to 18; anal 13. Range: Van- 

 couver Island to Monterey Bay, California. 

 Marine. Common. 



241. Axyrias harringtoni Starks 



24b. Back covered with rough scales above lateral line ; 

 spinous dorsal without a notch; head very rough; 

 preopercular spine more or less evidently bifurcate ; 

 a small cirrus above eye; dorsal X, 14; anal 12. 

 Range: Puget Sound. Marine. Common. 

 242. Ruscarins meanyi Jordan and Starks 



9b. Body not definitely scaly above and no bony armature to the 

 lateral line; the skin smooth, prickly, villous, or with scattered 

 scaly processes. 



28a. First dorsal not elevated in front, all the spines of about the 

 same length as those following; the skin smooth or velvety, 

 sometimes warty but not covered generally above and below 

 lateral line with stiff prickles. 



29a. Gill membranes united to the isthmus and not forming a 

 free fold across it. 



30a. Head weakly armed, the preopercular spine simple at the 

 angle or absent. 



31a. Palatine teeth absent, or weakly developed in males. 



32a. Preopercular spines absent, the preopercle entire, 

 without spines. 



33a. Soft dorsal with 17 rays, anal 12. Range: Wood 

 River, Shoshone, Idaho. Freshwater. Not common. 

 243. Cottus leiopomus Gilbert and Evermann 



33b. Soft dorsal with 21 to 23 rays; anal 16 to 18. 

 Range : Upper Klamath Lake, Oregon. Fresh- 

 water. Not common. 



244. Cottus princeps Gilbert 



32b. Preopercular spines present. 



34a. One spine at angle of preopercle, none below this 

 one or at most only an elevation where spine usu- 

 ally occurs. 



