FISHES OF OREGON AND NORTHERN CALIFORNTA. 169 
Scars AND Dorsat Rays or CaTostoMUS MACROCHEILUS AND CATOSTOMUS OCCIDENTALIS—Continued. 
Catostomus occidentalis. 
_ Stony Cache Putah Russian Total 
Creek, Cal. Creek, Cal. | Creek, Cal.| River, Cal. meee 
In lateral line: Specimens. Specimens:| Specimens. Specimens. Specimens. 
MED OMEN To ect ot ences: obot’ igodas (+ Olga woe Sareea tapeaes sc] be Seac sot] Bee ache bea een cee 1 1 
63 scales. ..... 1 4 
64 seales.....- 5 8 
65 seales....-- 2 6 
66 scales... ..- 4 10 
67 scales. ...-.. 7 13 
68 scales. - 6 12 
69 scales. 6 9 
RUIRUIBR Ce ee ese aie tae o ca oe c ence ct Sew cestsf |) ye |, “ae cardia apie Qe ne Ke es 8 
(A) SAGER 525d de encc Shek Shsancis toss pode 2 Soden RES GeeOD ead Pomesmane cre Piet SN tI 8 6 ENN ee ace OAc 2 
72 scales. 4) 8 
73 scales . [aes ta alae 1 
74 scales. ae 1 2 
75 scales. ..-.... Seog ageucssooas poh S2hneies Jsse Sage esocoe YU yesoetd oo 4, Asc 5 Bethan 5 1 
Above lateral line: 
(GCI onthe ee Sb ine Asoc Sparco =o Sees sone r es Ss SOUS ES ae Be 4 y 
14 scales. 9 22 
15 seales. 10 25 
16 scales. 12 24 
17 scales...... | 1 4 
Before dorsal: | 
PAE S Lo 5 Saice eae ee es Be poper ade tocts “sada Se obcnee| PoSEapnsenad poslceesenmc hoe onrao sec 3 3 
30 seales 2 u 4 10 
31 scales | il eee 4 i) 
32 scales | 4 | 5 8 18 
33 scales 4 1 4 10 
34 seales 2 1 4 10 
35 scales 4 1 4 10 
36 scales | | 3 3 5 13 
Dorsal rays: | 
AIRGAS meters ape Sonn Syste Ome  eciia ses ase elven So nee seas 7 15 6 17 45 
=e 7} 5 | 6 16 34 
Be el eta oe SL eee ee |qnnee ee anee 3 3 
2 fned Sadste: td sthes tos 7osagcese: seer Se een eae cog, Cee canaseced SSenr cececse| Mosoncnosecs 1 1 
8. Acrocheilus alutaceus Agassiz & Pickering. 
Not found in the streams south of the Columbia. 
Willamette and tributaries. 
9. Lavinia exilicauda Baird & Girard. 
Occurs in Napa River, but has not been taken in the Russian River or in any streams to the north- 
ward. 
10. Mylopharodon conocephalus (Baird & Girard). 
This species is found in the Russian River, where it reaches its northern limit of distribution. It 
was not taken in Napa River. 
The dorsal fin has 8 rays; the anal 8, rarely 9. There are from 71 to 81 scales in the lateral line. 
Russian River and tributaries. 
