FISHES OF STREAMS TRIBUTARY TO MONTEREY BAY 
6i 
refuge in the deep pools. The species is not well represented where the current is very rapid and where 
the water, cool and clear, plunges over and around the rocks and bowlders. In the upper courses of 
the streams it is not found at all. It is seldom associated with Hesperoleucus. 
The largest specimens caught measured 13 inches in length. They were taken with baited hook in 
the Pajaro. They do not appear to reach such proportions in the Salinas, the river being too shallow. 
An examination of the scales of a number of individuals indicates that their growth is about as follows; 
First year, 60 to 85 millimeters, about 3 inches. 
Second year, 95 to no millimeters, about 4 inches. 
Thu'd year, 150 to 210 millimeters, about 7 inches. 
Fourth year, 160 to 230 millimeters, about 8.5 inches. 
Fifth year, to 280 millimeters, about 10 inches. 
Sixth year, 285 to 320 millimeters, about 12 inches. 
Measurements of 20 specimens of this species follow and for comparison similar measurements of 
10 examples of L. exilicauda are also given. 
Measurements of 20 Specimens of Lavinia ardesiaca. New Species. 
Pajaro River, Watsonville. 
Length of body mm . . 
162 
166 
133 
118 
112 
114 
100 
86 
84 
93 
Length head 
0. 23s 
0. 235 
0. 23 
0. 24 
0.245 
0. 24 
0. 24 
0. 24 
0. 25 
0. 25 
Depth body 
.28 
•255 
.27 
• 27 
• 26s 
. 26 
•25 
. 26 
• 275 
•255 
Depth caudal peduncle 
. 08 
•075 
.09 
• 085 
.09 
.09 
.085 
• 08 
•095 
.09 
X,ength caudal peduncle 
• IS 
. 16 
• 17s 
• 15 
• 17 
. 16 
• IS 
.165 
• 165 
• 17 
Length snout 
.07 
• 065 
• 07 
.07 
•07 
•07 
• 065 
• 07 
•075 
.07 
Diameter eye 
•05 
•OS 
•055 
•05s 
•05s 
•05 
• 065 
•055 
.06 
•055 
Interorbital width 
• 085 
.08 
• 085 
.09 
.085 
.09 
.08 
.09 
•095 
• 085 
Depth head 
. 16 
•ISS 
. 18 
. 18 
• 17 
• 17 
• 165 
. 18 
• 195 
. 18 
Snout to occiput 
. 18 
• 175 
.185 
. 19 
• 19 
.185 
• 19 
. 20 
• 19 
. 20 
Snout to dorsal 
• S 7 S 
•545 
• 56 
• 56s 
•57 
•57 
•S6 
• 54 
• 58 
• S6 
Snout to ventral 
• 525 
•515 
•SI 
• S 3 
•51 
• 52 
•50 
•52 
•53 
•54 
Length base of anal 
. 16 
. 16 
• 15s 
. 16 
• 14s 
• 14 
• 16 
. 16 
• IS 
. 16 
Height dorsal 
• I 9 S 
• 195 
• 19 
. 21 
• 19 
. 20 
. 22 
. 21 
. 22 
. 21 
Height anal 
. 18 
. 165 
• 17 
• 17 
. 165 
• 17 
. 18 
• 19 
.185 
• 19 
Length pectoral 
. 18 
• 17 
• 17 
• 17 
• I 7 S 
• 17 
. 20 
.18s 
. 20 
.18 
. 18 
I^gth caudal 
-30 
• 27s 
. 29 
•30 
•30 
. 29 
■ 275 
• 31 
•32 
•32 
Dorsal rays 
II 
10 
10 
10 
10 
10 
II 
10 
10 
10 
Anal rays 
II 
II 
II 
II 
II 
11 
12 
11 
10 
12 
Scales lateral line 
60 
54 
55 
55 
54 
54 
54 
55 
57 
54 
Scales above lateral line 
13 
14 
13 
13 
13 
13 
12 
13 
13 
14 
Scales below lateral line 
6 
6 
6 
7 
6 
6 
6 
6 
6 
6 
Scales before dorsal 
35 
34 
32 
33 
33 
34 
33 
32 
33 
33 
Salinas River, near Salinas. 
Length of body mm. . 
163 
121 
94 
90 
75 
90 
86 
79 
73 
81 
Length head 
0. 24 
0. 25 
0. 25 
0. 24 
0-255 
0. 24 
0. 26 
0. 245 
0. 25 
0. 25 
Depth body 
. 28 
. 265 
• 255 
•25 
• 30 
• 25 
• 27 
•275 
• 26s 
•275 
Depth caudal peduncle 
.08 
.09 
.08 
.085 
.09 
.09 
.09 
.09 
. 10 
. 10 
Length caudal pedtmcle 
. 16 
• 14 
• 14 
. i6s 
• 17 
. 165 
. 16 
. 16 
. 16 
• IS 
Length snout 
•07 
• 065 
. 065 
• 065 
•07 
.065 
•07 
• 07 
.08 
•07 
Diameter eye 
•05 
. 06 
. 06 
. 06 
.065 
• 065 
• 07 
.07 
. 065 
• 165 
Interorbital width 
.09 
.09 
.09 
.09 
.09 
.08 
. 085 
.085 
. 08 
.085 
Depth head 
.iSs 
• 19 
• 175 
• 17 
.18s 
• 17 
.185 
. 18 
.18 
• 19 
Snout to occiput 
. 18 
. 20 
. 185 
• 19 
. 21 
. 20 
. 20 
. 20 
. 20 
. 20 
Snout to dorsal 
• 59 
• 585 
•59 
• 57 
■ 58 
• 56 
•575 
• 58 
• 57 
•S8 
Snout to ventral 
•525 
•55 
• S 5 S 
• 52 
•54 
•SI 
•55 
•54 
•S 3 
•54 
Length base of dorsal 
■ 14 
• IS 
. 16 
• 15 
• 14 
• 15 
• IS 
• IS 
. 16 
•15 
length base of anal 
. 16 
• 17 
• 15 
. 16 
• 14 
• 17 
• 145 
. 16 
•17 
. 16 
Height dorsal 
• 19 
. 21 
. 21 
. 20 
« 20 
. 22 
• 225 
. 21 
.205 
Height anal 
. 165 
• 17 
• 17 
• 17 
• 17 
. 18 
• 175 
. i8 
. 18 
.19 
Length pectoral 
• 17 
• 17 
. 18 
. 18 
• 175 
• 19 
• 19 
.18 
. 20 
Length ventral 
• ISS 
. 16 
• 17 
. 16 
. 16 
• 17 
• 17 
• 175 
. 16 
• 17 
Length caudal 
• 275 
•31 
■305 
•31 
•30 
.28 
•31 
•325 
•31 
.295 
Dorsal rays 
10 
10 
II 
il 
10 
10 
10 
10 
11 
10 
Anal rays 
12 
12 
12 
12 
II 
12 
II 
II 
12 
12 
Scales lateral line 
57 
56 
60 
56 
60 
57 
57 
55 
59 
55 
Scales above lateral line 
13 
12 
13 
13 
13 
12 
13 
13 
12 
13 
Scales below lateral line 
6 
6 
6 
6 
6 
6 
6 
6 
6 
6 
Scales before dorsal 
34 
31 
34 
34 
32 
33 
31 
32 
32 
33 
60289° — Bull. 32 — 14 5 
