70 
buli^etin of the bureau of fisheries. 
Measurements of Specimens of Hesperoleucus subditus, New Species — Continued. 
Pajaro Basin. 
San Lorenzo Basin. 
Pajaro River at 
Sargent. 
Uvas Creek. 
San Lorenzo River. 
Length of body mm. . 
79 
74 
70 
63 
60 
91 
84 
88 
76 
77 
65 
64 
62 
55 
57 
Length head 
o. 24 
0. 25 
0. 26 
0. 26 
0. 26 
0. 25 
0. 24 
0. 26 
0. 25 
0. 26 
0. 27 
0. 26 
0. 28 
0. 26 
0. 27 
Depth body 
. 26 
• 25 
• 25 
. 26 
. 28 
. 26 
• 25 
• 27 
• 27 
. 26 
. 26 
. 24 
• 27 
• 27 
. 28 
Depth caudal peduncle 
. 10 
. II 
. II 
. ZI 
. 12 
. 12 
. 11 
. 12 
. 12 
. ir 
. 12 
. II 
. 11 
. 12 
. 12 
Length caudal peduncle 
. 22 
. 22 
. 21 
. 22 
• 23 
•23 
. 22 
. 22 
. 22 
• 23 
. 22 
• 23 
. 22 
• 23 
. 22 
Length snout 
.08 
.09 
.09 
.09 
. 08 
. 08 
. 08 
.08 
.09 
• 085 
.08 
. 08 
- 09 
.08 
.09 
Diameter eye 
. 06 
•05 
. 06 
. 06 
.07 
•05 
. 06 
. 06 
. 06 
. 06 
. 06 
. 06 
■ 065 
. 065 
. 06s 
Interorbital width 
. 10 
. 08s 
.085 
. 08 
.09 
.09 
.09 
. 10 
. 10 
. 10 
. 10 
.09 
.09 
.09 
. 10 
Depth head 
. 18 
. 18 
. 18 
'. 20 
. 20 
. 18 
. 19 
. 19 
. 20 
. 19 
. 20 
. 22 
. 20 
. 20 
. 20 
Snout to occiput 
. 20 
. 21 
. 20 
. 21 
. 22 
. 20 
. 20 
. 20 
. 20 
. 21 
• 23 
. 21 
. 22 
• 23 
. 22 
Snout to dorsal 
• 57 
• 54 
•57 
• 57 
-S8 
•57 
• 57 
•55 
• 56 
• 57 
•S8 
•57 
• 58 
• 59 
■58 
Snout to ventral 
• S 3 
• 52 
• 51 
• 52 
• 52 
• 52 
• 52 
• 53 
•51 
• SI 
• 53 
• 53 
•S 3 
• 53 
• 54 
Length base of dorsal 
• 13 
. 12 
• 13 
• 13 
. 12 
• 13 
• 13 
• 13 
• 14 
• 14 
. 12 
. 12 
. 12 
. 12 
• 13 
Length base of anal 
. 12 
. 10 
. 12 
. 12 
. 10 
. II 
. II 
. 10 
. 10 
. IZ 
. 10 
. 10 
. 10 
. 10 
. 10 
Height dorsal 
. 19 
. 20 
.20 
. 21 
• 19 
. 19 
. 20 
. 20 
. 20 
. 18 
. 18 
. 20 
. 18 
. 19 
. 20 
Height anal 
• 17 
• 17 
• 17 
• 19 
. 18 
• 17 
. 18 
. 18 
. 18 
. 18 
. 16 
. 16 
. 16 
. 18 
• 19 
Length pectoral 
. 19 
. 19 
■ 19 
. 21 
• 23 
. 20 
. 20 
. 20 
• 19 
. 20 
. 18 
. 20 
• 19 
. 24 
. 21 
Length ventral 
• IS 
• 15 
. 16 
. 16 
• 15 
. 16 
. 16 
. 16 
• 15 
. 16 
14 
. 14 
• 14 
• 15 
. 16 
Length caudal 
. 28 
. 27 
• 27 
. 29 
. 27 
. 26 
.28 
• 27 
. 28 
• 27 
• 25 
. 26 
•25 
. 26 
• 27 
Dorsal rays 
8 
8 
8 
8 
8 
8 
8 
8 
8 
8 
8 
8 
8 
8 
8 
Anal rays 
8 
8 
7 
7 
7 
7 
7 
7 
7 
7 
7 
7 
7 
7 
7 
Scales lateral line 
54 
56 
56 
53 
53 
55 
51 
S 3 
55 
53 
56 
57 
56 
56 
57 
Scales above lateral line 
IS 
15 
14 
14 
13 
13 
14 
IS 
IS 
15 
14 
14 
IS 
14 
16 
^ales below lateral line 
7 
7 
8 
7 
8 
8 
8 
7 
8 
8 
8 
7 
8 
8 
8 
Scales before dorsal 
32 
30 
31 
31 
30 
29 
30 
29 
32 
32 
31 
33 
30 
30 
32 
Agosia carringtoni (Cope). California dace. 
Specimens of Agosia taken in the Pajaro system do not appear to differ from those of the Sacramento. 
Sahno irideus Gibbons. Rainbow trout. 
The trout taken in the tributaries of the Pajaro system appear to belong to the native species, except 
a few specimens from the San Lorenzo River, which have larger eyes and a somewhat different color 
pattern. The native trout appear to agree in all details of structure and color with specimens from 
Coyote Creek and other streams tributary to San Francisco Bay. The young of other species have 
been introduced into various streams from time to time, but either none have been taken at the numerous 
collecting stations, or else the writer has failed to recognize them among the preserved specimens. It 
is possible, however, that the introduced forms of rainbow trout come to resemble the native species so 
closely that their identity would be difficult to detect. The dead bodies of large steelheads were occa- 
sionally seen in Uvas, Arroyo Seco, and Nacimiento Creeks. At high water they are said to enter all 
the streams in large numbers. They are frequently mistaken for salmon. 
Small trout, beautiful in color and excellent in quality, abound in the upper courses of the creeks 
and rivers, and especially good fishing may be had in Nacimiento and San Antonio Creeks. The trout 
of the main channels of the rivers are apt to be rather poor in quality, and are usually light silvery 
in color. Occasionally a silvery specimen is taken among the darker colored examples of a tributary 
stream. * 
Oncorhynchus tschawytscha (Walbaum). Chinook salmon. 
This species was reported from the San Lorenzo and Pajaro Rivers. No small salmon were taken 
with the seine at any collecting station. 
Oncorhynchus kisutch (Walbaum). Silver salmon. 
Silver salmon were said to have been observed in the San Lorenzo River at Santa Cruz. 
