EXPLORATIONS IN WESTERN CANADA, ETC. 
113 
Tlie following- table gives the measiii'emeats atnl some other variations found among the 
siiecimeus of Leuciscus halteatus from Mission: 
No. 
Length 
in mm. 
Dor- 
sal. 
Amil. 
Scales. 
Teeth.* 
Depth. 
Position 
of dorsal. 
Sex. 
Remarks. 
1 
140 
13i 
184 
12-59-6 
3d 
(t) 
$ 
Keel scarcely evidoit. 
2 
120 
12J 
214 
11-53-5 
(2, 5-1, 1 
3-: 
G) 
d 
Median keel scarcely evident. 
3 
no 
13A 
19| 
12-G0-6 
2, 5-4, 2 
3| 
(II) 
cT 
Median keel moderate. 
4 
10.3 
12i 
204 
12-58-6 
2, 5-4, 2 
34 
(lb 
‘i 
Median keel well developed. 
5 
lOD 
12i 
194 
11-57-6 
2, 4-4, 2 
3? 
(t) 
Keel typical. 
6 
102 
12i 
184 
12-60-6 
2, 5-4, 2 
34 
( 5 ) 
cT 
Keel moderate. 
7 
91 
Hi 
204 
12-57-5 
2, 4-3, 1 
3? 
(II) 
9 
Keel evident. 
8 
92 
lU 
194 
12-58-6 
2. 5-4, 1 
3i 
(II) 
Keel distinct. 
9 
88 
12i 
19| 
12-01-6 
2, 5-4, 2 
3j 
(ID 
d" 
Keel well developed. 
ID 
92 
12i 
214 
12-6:1-6 
2, 5-4, 1 
35 
( 5 ) 
V 
Keel typical. 
11 
102 
12i 
204 
11-62-6 
2, 5-4, 2 
ih 
cf 
Keel well developed. 
12 
87 
12.\ 
204 
13-59-6 
1, 5-4, 2 
3| 
(t) 
cT 
Keel moderate. 
13 
86 
12i 
204 
11-59-7 
2, 5-4. 1 
34 
(II) 
cT 
Keel well developed. 
14 
83 
12i 
204 
12-61-7 
2, 5^, 1 
3^ 
(t) 
d 
Keel no mox’e tiiau in montanus. 
15 
80 
lU 
19,1 
12-61-6 
2, 5-4, 1 
3i 
(t) 
cf 
Keel distinct. 
16 
95 
12i 
184 
13-59-7 
2. 5-4,2 
34 
( 11 ) 
cT 
Keel evident. 
17 
90 
12i 
174 
13-58-7 
2, 5-4, 2 
3§ 
(t) 
? 
Keel moderate. 
18 
80 
ID. 
174 
11-60-7 
2, 5-4, 2 
34 
(t) 
d 
Keel ty])ical. 
19 
77 
124 
174 
57 
2, 5-4, 2 
3! 
(t) 
1 
Keel well developed. 
20 
87 
124 
164 
13-61-7 
2, 5-3, 2 
3| 
(^) 
Bo. 
21 
81 
12i 
224 
12-58-7 
2. 5-4, 2 
3§ 
(II) 
9 
Keel moderate. 
22 
80 
134 
214 
61 
2,5-? 
34 
(II) 
9 
Do. 
23 
74 
lU 
164 
2, 5 1, 2 
Do. 
24 
60 
24t 
% 5 4, 2 
3i 
t 
68 
134 
26 
6-1 
12| 
234 
. 
* I have fi'eqneutly observed that tlie largest individuals among the minnows usually have abnormal numbers of teeth. 
t Equidistant from base of midille caudal rays and a imint abo\m middle of pupil. 
t Anterior tootli of main row on left side is large, dagger-shaped, and remote from the others, and points inward. 
§ Equidistant from base of middle caudal rays and upper angle of preo))ercle. 
II Equidistaut from base of middle caudal rays and posterior margin of eye. 
Besides the above there are four with 17^ anal rays; eleven with 181; twenty with 191; 
eleven with 201; live with 211; on '■ with 221; one with 231. The largest number of 
specimens with increased anal rays were small individuals, about 70 mm. long. 
37. Leuci.scus balteatus laterali.s (Girard). The specimens of this subsiieeies from the different 
localities will be considered separately. 
1. Sicamous. A number of the specimens contain large qiarasitic worms. Eight siiecimeus 
examined show the following measurements : 
No. 
Length. 
Dorsal. 
Anal. 
Scales. 
Teeth. 
Position of dorsal. 
Depth. 
1 
mm. 
82 
124 
19 ;^ 
11-60-6 
2,4-3, 1 
(*) 
4— 
0 
92 
124 
12* 
16 ?i 
11-62 6 
2,5 4,2 
3 
90 
144 
14-62-7 
2) 5 - 4 ) 2 
(t) 
3i 
4 
87 
.12d 
174 
12-60-5 
2, 5-4 
4 
5 
85 
124 
10-62-5 
2, 5-5, 3 
0 
4i 
6 
80 
124 
184 
11-60-0 
2. 5-4, 1 
(*) 
■44 
7 
85 
124 
124 
16^ 
11-59-5 
2, .5-4, 2 
(t) 
4 
8 
77 
174 
11-61 
2, 5-4, 1 
(*) 
* Eipiidistant from base of middle caudal rays and upper angle of preopercle. 
t Equidistant from base of middle caudal rays and a point above middle of pupil, 
t Eijuidistaut from base of middle caudal rays aud occiput. 
The total number of specimens collected at Sic.amous was 58. They have the following 
number of anal rays: 1 has ltd; 3havel5d; 13 have 161; 28 have 17d; 8 have 181; SliavelOl. 
These specimens are a little more robust than those from Jlissioii and are certainly more elon- 
gate, the depth in a uninber of them being 3J-4J in the length. They are more coarsely aud 
profusely punct,ate. There is a conspicuous black lateral band, above which there is in some 
sjiecimens a narrow light line, above which there is another darker shade. The ventral keel 
is moderately developed. In all the normal pharyngeals examined the teeth in the main row 
were 5-4. In one case the teeth are 2, 5-5, 3 Avhich may be a case of reversion. This is 
unquestionably the species figured by Gi rani as E. lateralis. The average size of tlie siieci- 
meus is smaller than that of balteatus. 
E. C. B. 1894—8 
