332 



EEPOET OF THE COMMISSIONER OF FISHERIES. 



7. Leuciscus crassicauda (Baird & Girard). 

 Coyote Creek. 



8. Rutilus symmetricus (Baird & Girard). 



San Francisquito, Madera, San Antonio, Campbell, Guadalupe, Coyote, Alameda, 

 Arroyo Honda, and Isabel creeka. The apparent absence of this species from Stevens 

 Creek is notable, as it occurs in smaller streams close by. It is able to maintain 

 itself in Madera Creek during periods of drought, when nothing remains of the 

 stream but a few small disconnected pools. 



The species being generally distributed throughout the Sacramento basin and sub- 

 ject to considerable variation, measurements of a number of carefully preserved 

 examples are here given: 



Measurements of examples of Rutilus symmetricus from streams tributary to the soutliern 



arm of San Francisco Bay. 



Alameda Creek Basin. 



Alameda Creek, Sunol. 



Length of body 



Length head 



Depth body 



Snout to dorsal 



Snont to ventral 



Depth caudal peduncle . . 

 Length caudal peduncle. 



Length snout 



Length maxillary 



Diameter eye 



Interorbital width 



Depth head 



Length base of dorsal 



Height dorsal 



Length base of anal 



Height anal 



Length pectoral 



Length ventral 



Length caudal 



Dorsal rays 



Anal rays 



Scales lateral line 



Scales above lateral line. 



66 

 .26 

 .27 

 .58 

 .53 

 .10 

 .18 

 .09 

 .075 

 .06 

 .09 

 .185 

 .16 

 .23 

 .13 

 ,21 

 .25 

 .18 

 .32 

 9 

 8 



56 

 14 



59 

 .26 

 .25 

 .58 

 .53 

 .10 

 .19 

 .09 

 .08 

 .07 

 .09 

 .18 

 .15 

 .21 

 .12 

 .19 

 .19 

 .16 

 .29 



