96 BULLETIN OF THE BUREAU OF FISHERIES. 
COMPARISON OF CERTAIN DISTINCTIVE CHARACTERS OF RuTILUS THALASSINUS, R. OREGONENSIS, 
R. coLuMBIANUS, AND R. BicoLor—Continued. 
Scales lateral line. 
Species. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 
i} 
R. thalassinus: | 
PitdRiver. i225 fe-- 225 jones Shh oe Se Soe ences sent Ute oe eos ee | aerate ete eters | einer eer! | 6 8 5 6 7 
2) 1 1 1 2 5 
4 5 9 7 9 7 
6 12 18 13 17 19 
R. oregonensis: 
ChewalcantRiverss-cs cme: aoc eae eee eee eee |ocese 1 1 1 1 
EXOT O DTN Pers sees eee 1 3 2 
Ana River... i 3 
Silver Lake. 2 4 8 8 
Alkali Spring. 6 il di 12 
Warner Lake 5 4 10 10 
Totals. -.-goe ncn es at Seeeas nee see se eee Smee |aeeenleecsee|eeeceulencene 2 Bl) 14) e213 36 
R. columbianus: | 
Warm Spring 7 9 7 19 11 5 4 1 1 
Silvies River. ......-..-- 1 2 3 3 4 5 5 4 3 
HUONG ob ae cao cooddesqcesseddecencasesroosesoceso58 | 80) ey et OF) | 22 soe) 9 5 4 
R. bicolor: | 
Klamath take ert secs em ccsssce eee eer ae ere Bese Baeaae peeree Sossec 3 1 2 2 3 2 
Shials ta URiiver see see ee eee ee eee eee eee | eee rine ceeeee 1 6 8| 10 8/ |) 2B 6 
Total. o2ovec songs Pease base ea ae eee se eee | ees Petia eer 1 | aero | TL | LO} 8 eG 8 
| 
Species 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 
T. thalassinus: 
TEMP IRN Gee se eaen comocisbetconsconsaseerosncessstoege 
Goose Lake.. ee 
Muddy Creek 
BROY HEN | ee ngecoone Sdes sn sodbossesceenassccsestoas 16 9 4 Pe rend pS Ea Mascon same eossod) | isentc 
R. oregonensis: 
Chewaucan River 2 4 2 5 5 2 Ail eseieel ees 1 
XL Spring. ---- 5 4 7 1 14 6 5 1 Dees 
Ana River. 2 6 8 8 9 9 8 4 pH BS See 
Silver Lake-- 8 7 7 8 9 2 2 3 PI iesans 
Alkali Spring 18 14 10 11 6 3 PI Bes sec bh eaescs 
Wnirisr Manes © il 21 10 8 14 4 2 1 ees paces 
Oba eee ae es ne aaa ae 46 56 44 51 57 26 21 9 6 1 
R. columbianus: 
Warm Spring. ..----2-- =. << - 22205 25 n2 oo en nnn fm enn a fm mane ml mre 
SilviessRivelsers seeoeee eens esses ee eee WS soe eee eee ee eee eee eee Eee leeeeee 
Motale ee sree sete an eek eres aes ee eer 5 eee Seereeed aeeiar Ramee meres beens Reeeta sae. joneere 
R. bicolor: 
Klamath Lake. ...-..--- RAMAN Sena One Hod Sin DSS ASS TO Bseeeces basseeo bbasas jecouee| Saeco secsoc|ooscor|eseasdicssoo- 
ShastavRiveticsesssesn ssee secs sees eae ee 6 2 1 Ul peer Soeene|EReoaeloseoltsocc cc [oseee 
Motal sec sese sacs oe ee ee ea ee eee nee ee 7 2 1 1 eee Beers Sree sesnmr| acc raccnc 
Scales before dorsal 
Species. 21 22 | 23 24 25. 26. 27. 28. 29. 30. 31. 32. 33. 
R. thalassinus....--..- 10 16 13 9 Peete sal lemnons ol Bee sea potisae| =<0= 
R. oregonensis- - 3 18 9 23 34 36 20 10 4 
R. columbianus - 3 8 9 
TRADI CO) O Nee see eiaet eee ee eae 2 ll 2) 
