PROGRESS IN BIOLOGICAL INQUIRIES, 1926 5a 
Concerning these trout, Doctor Kendall replied that according to 
his view there are two sorts of “ rainbow trout.” One sort comprises 
Salmo shasta and closely related species, which are supposed not 
to be habitually sea run. The other sort comprises the migratory 
fish that has received the name of “steelhead” (S. gairdnerii). This 
name originally signified the migratory fish only; but there are 
other forms, perhaps distinct species and perhaps nonmigratory, 
that are more closely related to the migratory steelhead than they 
are to S. Shasta. "These also have been popularly regarded as 
“rainbow trout.” 
Doctor Kendall regards the Hawaiian trout as the steelhead type 
of trout, but that does not signify necessarily that they were the 
migratory form; that is to say, the eggs that produced these fish 
may not have been taken from migratory fish (at the time recognized 
as such), but from trout supposed to be rainbows. While they are 
fish that have entered largely into the bureau’s fish-cultural rainbow- 
trout output, they are not of the Salmo shasta category. The fish 
in question may or may not have been from migratory stock or from 
fish that are occasionally sea run. 
Doctor Kendall was unable to say what the proper technical name 
of this fish should be, but suggested that not much violence to the 
present taxonomic situation or any greater confusion than now 
exists would ensue if they should be called Salmo irideus. 
Late in the season specimens of so-called steelhead trout were 
received for identification from Prof. J. R. Dymond, of the biologi- 
cal department of Toronto University, Toronto, Canada, which he 
had collected in British Columbia and Washington. A specimen 
from Kalama, Wash., appeared to differ somewhat from those from 
Vancouver Island and Prince Rupert, as it did also from other speci- 
mens from the Columbia River and from specimens collected by 
Doctor Rich in Naknek Lake, Alaska, with which it was compared. 
During the year other collections and specimens were received for 
study or identification. Particular mention should be made of the 
collection of Greenland chars made by Dr. Walter Koelz on the 
McMillan expedition in 1925. Also, a collection of salmonids, mostly 
chars, from Labrador, was delivered to Doctor Kendall in Novem- 
ber by Columbus Iselin, a Harvard student, who conducted an oceano- 
graphic expedition, sponsored by Dr. Henry B. Bigelow, along that 
coast. The collection, although not large, was representative and 
well preserved, and the observations recorded in accompanying notes 
added much to the knowledge of conditions in that region, as pertain 
to the Salmonide. 
A few specimens of salmon (Salmo salar) and recorded observa- 
tions confirm the statement made by Abe Bromfield, McMillan’s Es- 
kimo interpreter, that there is no commercial salmon fishery beyond 
about 50° north latitude, but that in one or two places farther north 
one or more individuals occasionally are taken in cod traps. How- 
ever, Bromfield asserted that a salmon fishery is carried on in Un- 
gava Bay, concerning previous reports to that effect there has been 
some doubt. 
The chars collected comprised two species—one that has been re- 
garded as Salvelinus fontimalis and the other as S. stagnalis. The 
