FISH-CULTURAL INVESTIGATIONS IN MONTANA AND WYOMING. 
51 
Swan lakes. This extends its known range considerably eastward. The following 
table gives measurements of six specimens from Rattlesnake Creek: 
No. 
Length 
in inches. 
Head in 
length. 
Depth in 
length. 
Eye in 
liead. 
Maxil- 
lary in 
head. 
Interor- 
bital 
space in 
head. 
Snout in 
head. 
Pectoral 
tin in 
head. 
Ventral 
fin in 
head. 
Anal fin 
in head. 
Longest 
dorsal 
ray in 
head. 
53 
10 
31 
41 
5 i 
2 
31 
31 
1§ 
2 
If 
11 
54 
7i 
31 
41 
5+ 
2 
31 
4 
If 
2! 
ii 
11 
55 
U 
31 
41 
5+ 
d 
B| 
4+ 
ii 
2 1 
9 
11 
56 
31 
41 
5 
2 
4 
11 
u 
2 i 
2 
57 
n 
31 
n 
5 
2 
31 
4 
ii 
21 
2 
11 
58 
71 
31 
41 
5 
2 
31 
4 
is 
2 1 
If 
11 
Color, in alcohol, of No. 53, which is not unlike the others: Dark gray, darkest on 
head and body in front of dorsal fin, becoming lighter below; yellowish white on belly; 
sides with about three longitudinal rows of orange or reddish spots, each about £ of 
an inch in diameter; these rows are irregular, but in general it may be said that the 
upper row lies along the middle of the space between the dorsal fin and the lateral 
line, the second one along the lateral line, and the third about midway between the 
lateral line and the level of the origin of the pectoral fin ; there are a few other spots 
that do not lie evidently in any of these lines; those on upper part of body smaller 
than those below. Besides the orange spots, the body is well covered with numerous 
dark punctulations, especially abundant on sides of head, fins, and lower parts of 
body; median line of belly, plain yellowish white; branchiostegals and lower jaw with 
some punctulations ; upper parts of pectorals and ventrals darker than lower. Com- 
paring these with specimens of same size from McCloud River shows the Rattlesnake 
Creek specimens to be much more slender (those from McCloud River having the 
depth 3§ to 4.'*- in length), the eye a little larger and the color darker. 
Specimens of u salmon trout ” weighing 12 and 14 pounds have been taken from the 
Bitter Root River, near Missoula. 
15. Cottus bairdi punctulatus (Gill). (PI. xxn.) 
Potamocottus punctulatus Gill, Proc. Bost. Soc. Nat. Hist. 1861, 40 (Bridger Pass). 
Cottus bairdi punctulatus, Jordan, Bull. U. S. Fish Com., IX, for 1889, 29, 1891. 
Numerous specimens of the blob, or “ bullhead,” as it is known in Montana where 
known at all, were obtained from the following localities : 
a. Beaverhead River, Dillon, Montana 76 
b. Red Rock River near Red Rock, Montana- 20 
c. Canon Creek, YellowstoneNational Park. 9 
d. Junction of Firehole and Gibbon Rivers . 19 
e. Pacific Creek in Two-Ocean Pass 4 
/. Pacific Creek 25 miles below the Pass . . 5 
g. Small Creek at head of Jackson Lake.- 21 
h. Snake River, President Camp, Wyoming 2 
i. Browns Gulch Creek, Silver Bow, Mon- 
tana 2 
It was also seen in Horsethief Springs 
The specimens from Red Rock and D 
inches in length, while those from the heat 
most of those from Pacific Creek. 
j. Cottonwood Creek, Deer Lodge, Mon- 
tana 32 
k. Little Blackfoot River, Elliston, Mon- 
tana 57 
l. Rattlesnake Creek, Missoula, Montana. . 11 
to. Lolo Creek near Missoula, Montana 13 
n. Jocko River, Ravalli, Montana 7 
o. Swan River at outlet of Swan Lake, Mon- 
tana 15 
and in Gardiner River below the falls. 
Ion are very large, measuring from 3 to 44 
of Jackson Lake are all very small, as are 
