204 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



Measurements of Siphateles obesus, Owens River, Laws. 



Length of body mm . . 



Length head . . . ^ 



Depth body 



Depth caudal peduncle 



Length caudal peduncle. . . 



Length snout 



Diameter eye 



Interorbital width 



Depth head 



Snout to occiput 



Snout to dorsal 



Snovit to ventral 



Length base of dorsal 



Length base of anal 



Height dorsal 



Height anal 



Length pectoral 



Length ventral 



Length caudal 



Dorsal rays 



Anal rays 



Scales lateral line 



Scales above lateral line . . . 

 Scales below lateral line. . . 

 Scales before dorsal 



109 



275 



245 



.11 



.20 



.08 



.05 



.09 



.20 



.21 



.56 



555 



.11 



085 



.19 



.15 



175 



155 



235 



8 



7 



51 



14 



6 



32 



89 

 .27 

 .27 

 .13 

 .21 

 .08 

 .06 

 .11 

 .21 

 .21 

 .55 

 .55 

 .12 

 .08 

 .20 

 .16 

 .21 

 165 

 .25 

 8 

 7 



54 



15 

 7 



31 



AGOSIA ROBUSTA Rutter. 



BLACK MINNOW. 



Numerous specimens of this species fail to present any distinctive 

 local characteristics when compared with a large series from the 

 Lahontan system. The general shape is similar to Lahontan ex- 

 emples. The barbels, usually present, are in some cases only seen 

 on one side or the other, or are entirely absent. The laternal line 

 may be entirely complete or variously interrupted, but usually 

 extends to or beyond a point beneath the origin of the dorsal fin. 

 There is a dark lateral stripe which is indistinct anteriorly, but very 

 prominent posteriorly, ending in a black, round spot at the base 

 of the caudal fin. Spots of dark pigment are scattered over the 

 body. They are irregular in outline, their boundaries not coinciden 

 with those of the included scales. 



