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BULLETIN OF THE BUREAU OF FISHERIES. 
MEASUREMENTS OF SPECIMENS OF RuTILUS COLUMBIANUS—Continued. 
From market, Portland, Oreg. 
Length of body. .-mm 167 
Length head... . 27 
Snout to occiput. 20 
Snout to dorsal. . - 56 
Snout to ventral... -55 
Depth caudal peduncl - 125 
Length snout. ...-...- 07 
Diameter eye.....- - 055 
Interorbital width~ _ - 09 
Height dorsal...........--. 519 
| 
176 185 157) ||, Height anals see 2s-22--22- 
- 275 . 26 ari Length pectoral. -- 
.19 19 20 Length ventral. - 
- 56 BoD . 565 || Length caudal... 
- 56 55 . 565 || Scales lateral line... .--.. 
13 13 . 135 || Scales above lateral line. 
07 - 07 07 Seales below lateral line. 
-05 - 045 05 Scales before dorsal. -- 
- 09 - 095 - 09 Dorsal rays-...------ Se 
- 20 - 20 aioli || AmaleraySteeenre eee 
- 165 -18 
Sale .18 
-16 - 185 
Srosoese - 295 
46 46 
12 12 
6 7 
29 30 
9 9 
9 8 
Rutilus bicolor (Girard). 
A table of measurements of specimens of this species is introduced for comparison with other forms. 
_ MEASUREMENTS OF SPECIMENS OF RuTILUS BICOLOR FROM SHASTA RIVER, NEAR YREKA, CAL. 
| | j 
Length) ofibody>--2-— ---2-- --4:--5- mm.-! 124 121 119 117 | 114 105 | 107 -103 101 105 
Length head... - - 265 - 26 225) Sota) eet pee NW 52s} - 265 -27 27 
Snout to occiput - - 20 -20 - 20 - 205 21 =21 { _.20 - 20 21 -20 
Snout to dorsal... - 555 -52 | .52 .55 - 57 -56 | .555 - 555 - 56 - 50 
Snout to ventral. . 53 754 |) 252 - 54 - 55 -55 - 555 ~ 535 . 5d - 56 
Depth body ss. -2---—- = - 28 229 - 28 27 -28 ee 574)) - 28 +27 -28 
Depth caudal peduncle 125 ~125)| 2125 ay «12 -12 - 125 -12 12 - 125 
Length snout.........- 075 08) ||) e075} 085 .085 085 | .08 | .08 - 08 - 08 
Length maxillary - 08 - 08 - 075 -075 | =. 087 -075 -08 | .075 -075 . 08 
Diameter eye... --- - 055 -055| .05 - 055 - 055 - 055 - 055 - 06 055 - 06 
Interorbital width. - 095 - O85 - 09 - 09 -10 - 09 -09 | .09 - 09 - 09 
Height dorsal...... -175 St th oil .18 -20 egiht) i SSS Wy aaledss - 20 +20 
Height anal... .14 -14 -13 .14 15 -14 -15 -13 14 -15 
Length pectoral - - sity) aa) tly -15 195 -18 -17 aly .16 - 20 
Length ventral. -14 .14 ~15 - 155 .14 -16 -15 15 -15 -18 
Length caudal. - +25 24 23 ~22 -27 24 -25 - 22 24 720) 
Seales lateral line. ......- 44 49 48 46 45 47 48 48 45 46 
Scales above lateral line- i an 10 10 10 11 i 10 anf 1 
Seales below lateral line... 6 7 6 6 7 6 7 6 5 7 ‘ 
Seales before dorsal... -- 22 27 25 25 25 25 25 25 24 24 
Dorsal rays. .--.- 8 9} 9 8 8 8 8 8 8 8 
A alir ay Sees eee = 8 8 7 8 7 8 8 8 8 To 
enpthiofibodyseee-- ne aee 105) 89 97 90 90 | 76 | 78 90 85 81 
Length head.... ~25 -275 nod 20 BAG vil Setl -28 -27 - 26 - 285 
Snout to occiput - -20 -205| .205 crt 20) |) 20 -21 oat ar Al -21 
Snout to dorsal... -545; «50 -55 - 55 . 56 - 56 . 57 - 56 55 - 57 
Snout to ventral. ~ 545 -55 | .55 - 54 -56 | .56 . 56 - 56 - 54 50 
Depth body. 225... --- 29 31 - 30 = 29 30 | .25 - 28 - 30 . 26 -28 
Depth caudal peduncle e124 12 -12 - 125 iL 2 | ares -13 -12 -12 -13 
Length snout...-...-.- - 075 - 085 - 08 - 08 - 08 - 08 - 085 - 08 - 08 - 085 
Length maxillary .075 - 08 - 075 -08 1075} .075 . 08 - 08 .075 - 075 
Diameter eye. -.--- -055 | .06 - 06 - 06 -06 | .06 | .065 - 06 - 06 - 065 
Interorbital width. BOS ie 10 - 09 - 09 HOO! 31) e109) -10 095 - 085 - 095 
Height dorsal.....- .18 -20 - 19 -19 - 20 -19 -20 -20 - 185 - 20 
Height anal... -13 -15 -15 ~15 -16 .14 -15 15 - 135 15 
Length pectoral. - -16 ag -16 ~ 20 -18 -16 Siti - 165 -16 .16 
Length ventral... -14 -16 15 Bily/ 16) |) aio, -15 -15 -14 -15 
Length caudal. -- +24 255 25 7 - 28 B25 ie | Ssaeeone 24 a25) . 26 
Scales lateral line. .....-- 51 46 46 45 45 47 44 49 46 46 
Scales above lateral line- ll 11 11 10 10 11 12 10 10 10 
Scales below lateral line- 6 6 6 6 7 7 6 5 6 7 
Scales before dorsal. .---- 26 25 21 23 25 25 25 23 26 25 
Dorsal rays..--..---- 9 8 8 9 8 8 9 8 8 9 
ATS) ay, Seen see eee ee eee eee 8 7 8 8 iu 8 8 8 8 8 
COMPARISON OF CERTAIN 
R. cOLUMBIANUS, AND R. BICOLOR. 
DisTINCTIVE CHARACTERS OF RutTILUS THALASSINUS, R. OREGONENSIS, 
Length head. 
Species. 0.23. | 0.25. | 0.26. | 0.27. | 0.28. | 0.29. | 0.30. | 0:31. 
Re thalassinus: 3-2 ses-t eet eae Sean ee ee AN | ae 2 10 15 18 10 3 
R. oregonensis. . 1 13 36 66 57 16 5 
REXCOlUmMDPIBMUS Se Ee ee tape alee eae eee ee ee | rere | eee eee aes 3 il 22 6 2 
RU DICOLO Ns eee Sa ee a eee eee pace | seers 2 2 12 3 UM peHessaslodesenc 
