FISHES OF STREAMS TRIBUTARY TO TOMALES BAY. 38 1 



Cottus asper Richardson. Prickly bullhead. 



Found in the deeper and more quiet pools in the lower courses of the streams, and especially 

 common near their mouths. 



Cottus gulosus (Girard). Rifflefish. 



Two small specimens were collected on the rocky bottom of Papennill Creek several miles above 

 Tocaloma. 



This is the rifflefish of the miners, known to them because it frequently lodged above the riffles 

 or cross slats of their sluices, and by its vigorous flopping sometimes caused fine particles of gold to 

 pass over. 



C. aleuticus was not seen. 



97867°— vol 34—16 25 



