FISHES, LAHONTAN SYSTEM OF NEVADA AND NORTHEASTERN CALIFORNIA. 75 



TRUCKEE RIVER AT GOVERNMENT DAM. NEAR THISBE. NEV.. MAR. a6. igxx. 



Length of body mm 



Length head 



Depth body 



Depth caudal peduncle 



Length caudal peduncle 



Length snout 



Length maxillary 



Diameter eye 



Interorbital width 



Depth head 



Snout to occiput 



Snout to dorsal 



Snout to ventral 



Length base of dorsal 



Length base of anal 



Height dorsal 



Height anal 



Length pectoral 



Length ventral 



Length caudal 



Dorsal rays 



Anal rays 



Pectoral rays 



Scales lateral line 



Scales above lateral series 



o. 265 



.315 

 ■ 10 



• 15s 



.075 



.16 



.033 



.092 



•175 



•17 



•54 



•59 



. II 



. II 



. 13 

 •13 

 .14 



.115 



•I7S 



10 



II 

 13 

 163 

 33 



9 



o. 24s 



. 20 



.083 



.165 



.063 



.13 



-032 



.078 



.165 



.165 



•52 

 •59 



. 113 



•125 



. II 



-13 



.132 



.105 



•17 



II 

 12 

 14 



i6s 

 31 



640 



. 31 

 .09 



•ISS 



.68 



.14 



■03 



.082 



.16 



•IS 



•54 



•sss 



• los 

 •113 



■ 113 



• IIS 



•13 



• los 



■ iS 



IS 

 160 



33 



460 



e 



0.27 

 .335 

 . 10 

 .16 

 • 075 



•IS 



•03S 



.08 



•'75 



•17 



•51 



•55 



. 10 



• JOS 



. 13 



• 13 



•ISS 



• 13 



• iSs 



13 

 158 

 30 



9 



o. 345 

 •I9S 



.08s 

 • 175 

 .07 



.14 



•37 



.08 



■155 



.16 



•49 



•535 



.10s 



. II 



. 13 



.118 



.143 



•115 



•19 



13 



158 

 32 



S8S 



? 



0.34S 



. 20 



.077 



• 155 

 . 06s 

 .14 



• 03 

 •07S 

 •ISS 

 .16 

 •49 

 •S4S 

 .105 

 .105 

 . los 

 . 107 

 .135 



• 095 

 .16 



II 



13 

 14 

 165 



e 



0. 27 

 .22s 



•95 



.16 



.077 



.165 



•03 



.085 



.162 



.172 



•532 



•57 



. II 



.IIS 



•115 



• 13 



.14 



.los 



.18 



14 

 161 

 32 



483 



? 



O. 34S 

 . 30 



• oSs 



. 162 



.065 



.138 



.045 



.075 



•15 



•IS3 



•515 



•S3 



.095 



. II 



.105 



. 13 



•I3S 

 . II 

 .i8s 



14 

 157 



e 



a. 36 

 . 30 

 .09 



•ISS 



.07 



■ISS 



.032 



.082 



.16 



.16 



•49 



-54 



•125 



•125 

 ■ 105 



15 

 163 

 33 



? 



o. 335 

 .195 

 .09 

 .16 

 .065 

 •13 

 •03s 



• 075 

 •MS 

 •155 



•S3 



• 54 

 .105 

 . II 

 •IIS 



• 13 

 •15 

 •15 

 .19 



13 

 158 

 31 



TRUCKEE RIVER AT GOVERNMENT DAM. NEAR THISBE. NEV., APR. 21, 1913. 



Length ol body mm. 



Length head 



IDepth body 



Depth caudal peduncle 



Length caudal peduncle 



Length snout 



Length maxillary 



Diameter eye 



Interorbital width 



Depth head 



Snout to occiput 



Snout to dorsal 



Snout to ventral 



Length base of dorsal 



Length base of anal 



Height dorsal 



Height anal 



Length pectoral 



Length ventral. 



Length caudal 



Dorsal rays 



Anal rays 



Pectoral rays 



Scales lateral line _ 



Scales above lateral series 



467 



9 



o. 24 

 •315 



• 09s 



• 175 

 .06 

 .125 



• 033 

 .08 



• 15 



•IS 

 ■51 

 ■S4S 



. IX 



. II 

 . 112 

 •135 



• 15 

 .115 

 .183 



14 

 158 

 34 



In the lakes adults of this species appear to feed largely on minnows, yet many individuals examined 

 at Lake Tahoe had the stomachs fairly stuffed with large black ants. However, these fishes were 

 caught with a spinner, showing that they would even then be attracted by a minnow. In the rivers 

 and creeks insects are eaten whenever they are found. The difficulty of determining the normal food 

 is appreciated when it is seen that the hungry trout is the one most often caught. Of approximately 

 a hundred large trout taken in Pyramid and Winnemucca Lakes only one had the stomach well filled. 

 It contained two large minnows and the partly digested remains of another. 



There was not time enough allotted to the present investigation to make any progress in a study of 

 the movements of the lake trout. During a portion of the year these live in deep water and can be 

 caught, if at all, only on long lines. Early in the spring and summer they approach the shore and are 

 taken in relatively shallow water. Juday <• discusses the movement of this species from shallow to deep 



o Bulletin, Bureau Fisheries, vol. xxvi, 1906, p. 137. 



