123 
EXPLORATIONS IN WESTERN CANADA, ETC. 
CATOSTOMID.35. 
Ictwhina'. 
[Lowland species wliich have not been able to cross the Kooky Mountains.] 
Species. 
Pacilic slope. 
Species. 
Atlantic sloi>e. 
Dorsal. 
Anal. 
Dorsal. 
Anal. 
Not reiirescnted on Pacitic 
slojic. 
24-30 
30 
7-10 
7-8 
Cycle})tus 
Cdtosiomhur. 
10 12 ... . 
1 9-12 
10 1.5 
.... 11 12 
12 15 ! 
.. . 1 10 11 
n 12 
1 10-1.3 
Minytrenia 
1 " 
Moxosfomincv. 
Not represented on Pacitic 
slope. 
12-15 
13 
12 
Placopharynx 
The Gatostomiim presejit oue of the cases which, if found alone, would not bear 
evidence either in one or the other direction. The average number of rays is slightly 
larger on the Pacitic side and the higliest number of rays is also found on the Pac'tic 
slope. The Ictiohince and Moxostomince are not represented on the Pacific slope. 
CTPllINiniE. 
[The s])ccies sliowing an increased number ofraj's on either slope are in italic.] 
Genera. 
Pacitic slope. 
Genera. 
Atlantic slope. 
Dorsal. 
Anal. 
Dorsal. 
Anal. 
10 
0 
' 
8 
7 8 
Ortliodon 
9 
8 
Lavinia 
10 
12 
‘ Clirosoimis 
7-S 
8 
Oxvgeiienm 
8 
7 
K\ bogiiathns 
8 
7-8 
Piinephiiles 
■, 8 
8 
Exoglossum 
8 
7 
Cochlognathus 
8 
C-7 
s 
7 
8 
N of r op is 
8 or 9 
*7-14 
Erizvmba 
8 
8 
H 
8 
7 
7 
8 
7 
Hyhopsis 
8 
7-8 
Hybopsi.s 
8 
8 
ConesiiKs 
8 
7-8 
9 
8 
8 
8 
Myloclieilus 
8 
8 
7 8 
Mylopliarodon 
8 
8 
Ptychoch^lus 
8 or 9 
8-9 
Gila 
9-10 
9-11) 
Leiiciscus. 
{Richardsonius) 1 
8 
■ 10-22 
Lenciscns. 
• 8 
8 
8 9 
8 9 
8 
8 AO 
8 9 
8 
9 
7 10 
9 
8 
8-9 
7 8 
8 
7 
Myloleucus 
8 
8 
(.)psop<eodus 
9 
8 
10-11 
11 
8 
8 
IT, 7 
9 
8 10 
9 14 
Med a 
11,7 
8-10 
14 in one species, usually 7-9, in a few 10-12. 
t In this count the two rudimentary spines are omitted. 
