62 
bulletin of the bureau of fisheries 
Measurements of io Specimens of Lavinia exiucauda. 
Cache Creek, tributary of Sacramento River. 
Length of body mm . . 
166 
182 
178 
118 
118 
102 
102 
76 
103 
100 
Length head 
0. 23 
0. 20 
0. 23s 
0. 23 
0. 22$ 
0. 23 
0. 24 
0. 23s 
0. 23s 
0. 22 
Depth body 
• 27 
• 24 
• 24 
• 265 
. 26 
• 27 
•27 
. 26 
•27 
. 26 
Depth caudal peduncle 
. 08 
.07 
-07 
.085 
. 08 
. 09 
.09 
.09 
.08 
.09 
I^gth caudal peduncle 
• 15s 
• 13s 
■ 17 
• 155 
• 155 
• 165 
. 16 
• 17s 
• 17 
•17 
Length snout 
. 06 
•055 
• 065 
.065 
. 06 
.065 
. 06 
. 06 
•06s 
•05s 
Diameter eye 
•OS 
•045 
•OS 
. 06 
. 06 
. 06 
. 06 
.06 
.065 
•OSS 
Interorbital width 
.085 
•075 
. 08 
. 08 
.08 
.08 
.08 
.08 
.08 
. 08 
Depth head 
• 17 
. 16 
. 16 
• 17 
. 16 
•17 
. 16 
• 17 
• 17 
•175 
Snout to occiput 
• 17 
• 17 
. 18 
.18 
.18 
• 19 
.18s 
• 19 
• 19 
• 19 
Snout to dorsal 
• 56s 
•59 
.56 
•S8 
•57 
•57 
. 60 
•S8 
•57 
•55 
Snout to ventral 
•SI 
•54 
•52 
•515 
•535 
•52 
•S 3 
•51 
•SI 
•SO 
Length base of dorsal 
. 16 
• 145 
. 16 
• 165 
. 16 
. i6s 
. 16 
. 16 
. 16 
. 16 
Length base of anal 
■ 17 
• 175 
. 16 
• 17 
. 18 
•17 
. 16 
•i6s 
.18 
• 175 
Height dorsal 
. 20 
• 17 
. i8s 
. 21 
. 21 
•23 
. 21 
.23 
. 20 
• 235 
Height anal 
• 17 
. 16 
• 17 
. 185 
•17 
.19 
.18 
. 20 
.18 
• 195 
Length pectoral 
• 17 
. 16 
•155 
. 18 
.18 
• 19 
.185 
• 19s 
• 185 
• 19 
Length ventral 
. 16 
. 16 
. 16 
•175 
•17 
.18s 
•17 
. 18 
. 18 
.18 
Length caudal 
.29 
• 27 
.30 
•32 
•33 
•30s 
•32 
.35 
.32 
•33 
Dorsal rays 
11 
II 
II 
II 
11 
II 
II 
II 
11 
II 
Anal rays 
13 
14 
12 
12 
13 
12 
13 
13 
13 
12 
Scales lateral line 
57 
59 
62 
S6 
58 
58 
S8 
57 
58 
S8 
Scales above lateral line 
14 
14 
13 
14 
13 
13 
12 
13 
13 
13 
Scales before dorsal 
37 
35 
37 
38 
38 
35 
35 
34 
34 
36 
Ptychocheilus grandis (Ayers). Sacramento pike. 
P. grandis O' occurs in the Pajaro Basin, but is not found in either the San Lorenzo or Salinas. It 
is the largest of the Pajaro minnows. Specimens measuring 20 inches in length were caught in the 
deep pools. Although a channel fish, it appears to venture up the smaller tributaries farther than 
Lavinia or Orthodon, but is not able to extend its range with Hesperoleucus or Catostomus. 
A table of measurements is appended. 
Measurements of Specimens of Ptychocheiuus grandis. 
Length of body mm . . 
196 
220 
29s 
226 
177 
164 
146 
141 
IS8 
164 
Length head 
0. 27 
0. 27 
0. 26s 
0. 26s 
0. 27 
0. 26 
0. 27 
0. 28 
0. 27 
0. 265 
Depth body 
• 195 
. 205 
• 205 
• 195 
. 20 
. 22 
• 19 
• 19 
• 19 
. 20 
Depth caudal peduncle ; . . . . 
.09 
.09 
•095 
. 09 
.09 
.09 
. 08 
• 085 
. 08 
• 085 
Length caudal peduncle 
• 19s 
. 21 
• 19 
. 20 
• 19 
• 195 
• 19 
• 19 
. 18 
. 20 
Length snout 
•09s 
. 09 
•09s 
• 095 
.09 
.09 
. 09 
. 09 
•095 
•09s 
Diameter eye 
.04 
.04 
•035 
. 04 
•045 
•04s 
• 04s 
•04s 
.05 
•os 
Interorbital width 
. 08 
•07s 
• 07s 
• 075 
.08 
• 075 
• 075 
.08 
.07 
.08 
Depth head 
• 14 
• 145 
• 135 
• 15 
• 14 
• 145 
• 14 
• 14 
• 15 
• IS 
Snout to occiput 
. 21 
• 205 
. 20 
. 21 
. 21 
. 22 
. 21 
. 21 
. 22 
. 21 
Snout to dorsal 
- 56 
- S6 
•55 
• 56 
• 59 
• 59 
• 57 
•S8 
•575 
• 57 
Snout to ventral 
• 54 
• 545 
• 535 
• 55 
• 545 
• 55 
•Sb 
•555 
• 55 
• 54 
Length base of dorsal 
. los 
. II 
• 115 
. 10 
. 12 
• IIS 
. II 
. 10 
. II 
. 10 
Length base of anal 
. 09 
•95 
. 10 
. 09 
• 105 
•95 
• 10 
. 10 
• 95 
• 95 
Height dorsal 
• 175 
• 17s 
, 165 
. 165 
• 175 
. 18 
• 175 
• 175 
. 18 
• 17 
Height anal 
• 155 
. 16 
• 14s 
• 155 
. 16 
. 16 
• 165 
• IS 
. 16 
. i6s 
• IS 
• 15 
Length caudal 
. 24 
• 24 
• 23s 
. 225 
. 24 
• 245 
. 24 
•23s 
•24s 
. 26 
Dorsal rays 
9 
9 
8 
8 
8 
8 
8 
8 
8 
8 
Anal rays 
9 
9 
9 
9 
9 
9 
9 
9 
9 
9 
Scales lateral line 
74 
72 
73 
74 
76 
73 
71 
74 
73 
75 
Scales above lateral line 
IS 
14 
14 
14 
15 
15 
13 
14 
13 
54 
Seales below lateral line 
7 
7 
7 
8 
7 
8 
7 
7 
8 
8 
Scales before dorsal 
36 
40 
36 
38 
39 
36 
38 
41 
39 
41 
o Ptychocheilus rapax Girard, said to have been collected at Monterey, Cal., is apparently a synonym of P. grandis anA doubtl^ 
owed its assigned locality to a confusion of labels. A similar case is Mylocheilus fratcrailus Girard taken by the same collector 
and also said to have come from Monterey. This is M. lateralis (M. caurinus of recent authors), the only known species of the 
genus, and does not occur south of the Columbia River. 
