FISHES OF STREAMS TRIBUTARY TO MONTEREY BAY. 
69 
Lateral series of scales 
48 
49 
SO 
51 
52 
53 
54 
55 
56 
57 
58 
59 
60 
61 
28 
18 
8 
Number of specimens, San Francisco Bay system 
I 
2 
3 
3 
12 
24 
15 
18 
11 
14 
8 
2 
There is nothing distinctive in the shape of the scales (fig. 21-25, pi. xxiv), but on the contrary they 
exhibit a great variety of forms, none of which, however, is peculiar to any particular region. They are 
usually rather oblong, although rounded or quadrangular specimens may be found. Some are spatulate 
and others have the edges rather straight and nearly parallel. The nuclear area is distinctly basal in 
location, and the basolateral angles are pronounced. The apicolateral angles are usually weak or absent. 
The apical radii vary from 12 to 25, the usual number being from 15 to 21 in examples 2 or 3 years old, 
the radii increasing with age, as may be seen on examining the illustrations. 
Number of apical radii 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
Number of specimens 
I 
9 
13 
21 
36 
45 
48 
34 
29 
25 
II 
2 
3 
I 
Lateral radii are present in nearly all cases, the scales in this regard differing markedly from those 
of M- venustus. The lateral radii number from i to 8, i to 5 or 6 being the most usual. There are no 
basal radii. 
This species has about 36 vertebrse, in this respect not differing from related forms. Of 10 speci- 
mens from the Pajaro, 8 had 36 vertebree, while the others had 35 and 37, respectively. In a similar 
series of M. venustus from Isabel Creek, Santa Clara Coimty, 8 had 36 vertebrae and 2 had 37. 
M. subditus is generally distributed in the Pajaro system, living in such portions of the streams as 
flow through the foothills and lower mountain ranges. It does not frequent the upper, turbulent parts 
of the creeks, nor is it often found in the low valleys where the water is shallow and the bed sandy. 
Measurements of Specimens of Hesperoleucus subditus, New Species. 
Salinas 
Salinas River near 
Gonzales. 
Basin. 
Arroyo Seco Creek. 
Length of body mm . . 
77 
74 
80 
75 
75 
89 
87 
8s 
78 
70 
Length head 
0. 27 
0. 25 
0. 27 
0. 27 
0. 26 
0. 26 
0. 2$ 
0. 27 
0. 26 
o- 28 
Depth body 
• 25 
. 24 
• 24 
. 26 
. 26 
. 26 
. 24 
. 26 
. 26 
• 27 
Depth caudal peduncle 
. II 
. II 
. 11 
. II 
. II 
. 10 
. 10 
. II 
. II 
. II 
Length caudal peduncle 
• 23 
• 23 
. 22 
. 21 
. 22 
. 22 
. 21 
. 20 
. 21 
. 20 
Length snout 
. 09 
• 085, 
.09 
.09 
.09 
. 08 
.08 
.09 
.08 
. 08 
Diameter eye 
. 06 
. 06 
. 06 
. 06 
. 06 
. 06 
. 06 
•07 
. 06 
.07 
Interorbital width 
.09 
.09 
.09 
. 09 
.09 
. 08 
.09 
• 085 
. 09 
.09 
Depth head 
.i8s 
. 18 
. 18 
. 19 
. 19 
. 18 
. 20 
. 19 
. 18 
. 20 
Snout to occiput 
. 22 
. 20 
. 22 
. 21 
. 21 
. 20 
. 20 
. 22 
. 21 
. 21 
Snout to dorsal 
• 57 
• 55 
• 59 
• 55 
. 60 
• 58 
• 56 
• 58 
■ 58 
•59 
Snout to ventral 
. 52 
• 51 
• 53 
• 54 
• 54 
•52 
•52 
• 54 
• 55 
• 52 
Length base of dorsal 
• II 
. 12 
. 12 
• 135 
• 13:5 
13 
. 12 
. 12 
. 12 
. 12 
Length base of anal 
• 10 
. 09 
. 11 
. II 
.09 
. 10 
. II 
. 10 
. 10 
. 10 
Height dorsal 
. 21 
. 19 
. 16 
. 16 
. 20 
. 16 
• 17 
. 18 
. 19 
. 18 
Height anal 
. 20 
. 18 
. 16 
• 17 
• 175 
. 16 
• 15 
. 16 
• 17 
• 15 
Length pectoral 
. 26 
• 23 
• 19 
. 20 
. 20 
• 19 
. 18 
. 20 
. 19 
. 18 
Length ventral 
. 18 
. 16 
. 14 
• 15 
. 16 
• 15 
• 13 
• 15 
• 14 
• 14 
Length caudal 
•30 
• 25 
. 26 
,27 
• 29 
.24 
•25 
•25 
• 24 
.24 
Dorsal rays 
7 
8 
8 
8 
8 
8 
8 
8 
8 
8 
Anal rays 
7 
7 
7 
7 
7 
7 
8 
7 
7 
7 
Scales lateral line 
53 
54 
51 
53 
S 3 
50 
54 
50 
53 
55 
Scales above lateral line 
13 
14 
12 
14 
13 
13 
14 
14 
13 
13 
Scales below lateral line 
7 
8 
7 
7 
7 
7 
7 
7 
7 
7 
Scales before dorsal 
29 
31 
30 
28 
28 
27 
30 
30 
31 
28 
