lor) 
= 
FISHES OF OREGON AND NORTHERN CALIFORNIA. i 
2. Acipenser medirostris Ayres. 
A large specimen from the Klamath River, near its mouth, was examined. The plates were located 
as follows: Mid-ventral wow, 3 in front of anal, 2 behind; ventro-lateral row, 9; lateral row, 27; dorsal 
row, 11 in front of dorsal fin, 3 behind. 
3. Catostomus rimiculus Gilbert & Snyder. 
Practically no difference has been discovered between examples of this species taken in the Kla- 
math and Rogue rivers. Examples from the Rogue appear to have the dorsal and ventral fins inserted 
somewhat more posteriorly than those of the Klamath. The difference is slight, not constant, and may 
be due in part to unequal shrinkage of specimens in preservation. 
The largest specimen seen measured 410 mm, in length. 
Klamath and Rogue rivers. 
MEASUREMENTS OF CATOSTOMUS RIMICULUS. 
Klamath River basin. 
| Klamath River near mouth. Shasta River near Yreka. 
| | 
DENS TOOL OGY. .2.ce es sco. ose wanaeak sass mm. | 242 | 252] 275) 301] 334) 262) 250) 225 228) 223 212 
Length head... 2 -24 | .235 | .23 | .235 | .225 | .235 |'.23 | .225 | .24 | .22 +23 
- 185°} 220. | -19 | «105 | .20) | 19. | 22) | ..24 | 2225) 215 | 20 
-095 | .097 | .095 | .095 | .085 | .092 | .095 | .095 | .092 | .095 | .095 
SABO eke Vekes edOn [eGo tenLiZpn le 1Ons leita tose lets - 185 
-115 |} .105 | .105 | 11 | .105 | .12 | 115) .11 |.12 | .105] .11 
| .035 | .035 | .03 | .03 | .03 | .03 | .035 | .035 | .032 | .035 | .035 
-095 | .095 | .085 | .095 | .095 | .10 | .10 | .095 | .105 | .10 - 092 
| -155 | .155 | .15 | .15 | .16 | .162].16 | .15 | .175 | .15 -15 
- 495 | .495 | .465 | .485 | .48 | .50 | .49 | .485 | .50 | .48 - 48 
-59 | .565 | .555 | .57 | .55 | 555 | .565 | .56 | .56 | .575 |) .56 
- 145 | .135 | .145 | 185 ].14 | .15 | .14 | .14 | .135) .18 -15 
} -075 | .08 | .085 | .09 | .072 | .075 | .075 | .075 | .072 | .08 - 075 
-155 | .145 | .15 | .14 | .142| .14 | .145].15 | .15 | .15 15 
ee Sh Win COS Fe MR EE 8 ae a a) Ne Pa | Wa Pe 
Length caudal peduncle. - 
Length snout.........-. 
Diameter eye....... 
Interorbital width. . 
Depth head......... 
Snout to dorsal. 
Snout to ventral.... 
Length base of dorsal. 
Length base of anal... 
Height dorsal... .- 
Height anal..... 
Length pectoral. -195 | .205 | .20 | .20 | .195 | .185} .17 |.185|.20 |.175] .19 
Length ventral. . -145 | .14 | .145 |] .14 | .14 | .14 | .145 |] .14 | .135|.145 |) .145 
Length caudal. | .23 | .22 |.205).21 | .20 | .205|.20 | .205 | .21 | .19 -21 
Dorsal rays. - 11 il ll ll ll 12 1 ll ll 10 12 
Anal rays.... 
| 
Sia Parl Pe eA FN aren SI SeAll ces 7 
| 86| 88] 85) 89] 85| 93! 89 
(RONEN sata aia) ait iG)y\h a5) Gall Gaile it 
| 47] 44] 40| 44| 38]/ 42] 39] 39] 40] 39| 44 
South Fork Illinois River. Bear Creek, Ashland, Oreg. 
Teneo body ta. Xin coz mm.| 247| 266| 281| 285| 996| 77| 961 01 xo1| 135 
Length head. Sea\) 26) |) ob 1) am | rosb ile 24s eb eal eme4b ||| oa | oa) 295 
Depth body..........-. 122 - 205 21 -205 | .20 Sak |) vee - 20 -21 215 
Depth caudal peduncle. . . . 095 - 095 | . 09 - 095 -097 | .09 - 09 - 09 - 09 - 095 
Length caudal pedunele. - Bee eelG 15 -165| .16 Go Heelan pee ty -165 | .16 pilr! 
Length snout........... SAO TE 5s GIG )| Gre |) Gib | were | Raul |) rb ib 12 10 
Diameter eye....... ---| 035.035 .033 | .033  .03 - 05 -045 | .045 | .04 . 04 
Interorbital width. . ace) 0858), 2100} 3088! 208) 095") 1098 - 09 - 09 - 095 - 09 
Depth head......... Be ce -175 - 16 alee | rent 16 16 16 16 16 
Snout to dorsal... }) OLE 02071) 005) | b0 51 52 -52 51 50 50 
Snout to ventral...-- . 585 . 61 -575 | .57 ~ 56 -58 ~59 . 58 - 58 - 56 
Length base of dorsal 14 BSG) at 3 -135 | .13 14 -14 -14 -16 -14 
Length base of anal. . S38) maghFe 07 - 08 08 - 08 -075 | .07 -07 -07 -07 
Height dorsal...... a3 sf Sat 15 .14 BASS eek tah ee de . 16 17 -15 
Height anal... eu! 3 - 195 -185 | .185 | .18 Bale? - 16 -165 | .18 2 lf 
Length pectoral. .19 185 | .175| .185 | :21 21 DiS s2t 19 
Length ventral. -14 135 14 135 | .15 16 16 16 14 
Length caudal. . 225 205 21 205 | .24 23 22 22 22 
Dorsal rays. ll 10) 11 | 11 ll 1 i 12 11 
Anal rays.......-. r¢ 7 | 7 7 Ve 7 6 7 7 
Seales lateral line... .... 87 90 89 89 81 81 87 84 81 
Seales above lateral line ee 16 17 15 17 15 15 16 16 16 
Beales hakore: dorsalis ooo eke cs- toe tk eee ee ccs 42 41 42 45 38 38 | 40 39 | 41 
