a 
-~I 
bo 
This species is found in the Umpqua and its tributaries. 
the small lakes near the coast between the latter river and the Umpqua. 
BULLETIN OF THE BUREAU OF FISHERIES. 
which will separate the Umpqua basin specimens from those of the Siuslaw. 
The following table shows in some detail the chief differences between P. oregonensis and P. wmpqux 
as demonstrated by an examination of 98 specimens. 
Tt also occurs in the Siuslaw River and in 
No characters are evident 
DirpERENCES IN Size oF SCALES OF PryCHOCHEILUS OREGONENSIS AND PryCHOCHEILUS UMPQUA. 
Ptychocheilus oregonensis. 
Columbia 
Willa- Skookum- Silvies 
mette River, chuek eee River, Total. 
River. Astoria. River. 2 Oreg. 
In lateral line: Specimens.| Specimens. Spectre Bueciners Specimens. Specimens. 
17 SC 
71 scales 
72 scales 
73 scales 
7A scales... 
75 scales 
Before dorsy 
46 scales 
47 scales. . 
48 scales . 
49 scales . . 
50 scales . 
51 scales. . 
52 scales . . 
53 seales . . 
54 scales. . 
55 scales. . 4 
OGiSQRIOS Scene cee eeenitenee tae nee ante siaaeeatnee 
Above lateral line: 
LG iSCalOS soe e sess ene wiaces cat ecco ee 
17 seales 
1S scales . 
19 seales . 
PNETCAC Rein Gespracbocabetean tone socooesenbaawos| Pacoadsecee 
1 1 
Gf |pasccesae se 
5 1 
1 
WIT NERO WANA RRWWRAISS 
Ptychocheilus umpqux. 
Tsilteoos 
S. Umpqua) Callapooia | Siuslaw 
River. Creek. River. River. 
In lateral line: Specimens.) Specimens. Specimens.| Specimens. 
2S SOROS wetawrciste's cian cacao wie oe eteie a Rena nine as 
74 scales .. 
75 scales .. 
76 scales .. 
77 scales .. 
78 scales 
79 scales .. 
80 scales 
S81 scales .. 
82 scales 
83 seales 
S4 scales 
85 seales 
Before dorsal: 
DO SGA IOS eos emia w ccc Cweee amie sas atone see eeeneeac eee seme 
56 scales 
5S seales . 
59 seales . 
60 seales 
61 scales 
64 scales 
65 scales 
66 scales 
67 scales 
6S scales. 
monte + 
Total. 
Specimens. 
pe 
RRR NNR ROR OR AOR Wh RR ORNS he 
