ZOOLOGY. 
330 
Inches. 
Length of caudal fin along its middle • • • • 2g 
Length along the lateral line from nose 
to the end of the middle of the tail • • 29| 
Width of base of dorsal fin 3| 
Width of base of adipose fin, nearly • • • • | 
Width of base of pectoral, about 1 
Width of base of abdominal, about | 
Width of base of ventral 2| 
Width of outstretched tail along its free 
margin. (Line of end of tail when thus 
stretched almost straight) 7| 
Girth just anterior to pectorals 11| 
Girth just anterior to abdominals IS-i 
Girth just anterior to ventrals 11 
Inches. 
Girth just anterior to caudal 6| 
Adipose fin thick and fat • 
Its length postariorly 1 
Dorsal, length superiorly (anteriorly) .... 3^ 
Ventral, length inferiorly (anteriorly) • • • 3^ 
Rays — Pectoral 13 
Abdominal 11 
Ventral 13 
Dorsal 12 
Caudal 26 
Branchial 12.12 
The caudal rays in the middle divide each 
into four fasciculi, which are again subdivided. 
Colors. — These were noted six hours after the death of the fish — they were still quite bright 
and silvery, and are given under the head of specific characters. 
The lower jaw was received nicely and accurately within the upper. Sex not noted. 
It is possible that this species may prove identical with the next. The fish resemble each 
other closely, and many specimens of both species (or varieties) will be required to determine 
the question properly. 
George Gibbs, esq., writing from Puget Sound, after alluding to several other species of 
salmon, says: 
"Besides the above, Swan caught, in 1854, two of the square-tailed salmon; only one Indian 
had ever seen them before. The rest said they were strangers (lieloima.) The scales came off 
very easily on handling." 
Again he sa3^s: (this time Avriting from the Columbia river.) 
"The square-tailed salmon has the body thicker where the tail joins the body than is the 
case in the common salmon [S. quinnat.) Belly silvery white; back not as blue as in the other 
species, (? S. quinnat,) and marked with numerous small roundish spots. Tail cut sharp across 
and not forked." 
In the following remarks Mr. Gibbs perhaps refers to the present species, or else to one of 
the other Avinter kinds Avhich had not yet finished its sexual duties before the arrival of the 
S. quinnat. 
"In 1853, at Astoria, I purchased the first salmon March 10. It Avas brought from Clatsap, 
AA^here several had been taken pre\^iously. It Avas not in good order, and Aveighed but 13 lbs. . 
a female, Avith eggs, half groAvn. Sides somewhat discolored, as is common in the fall. Fish 
more slender than that of the usual spring salmon. I was doubtful AA^hether its different 
appearance arose from it being a variety, or out of season. AfterAvards, April 20, I find 
another note that this species Avas still taken, AA^-hile the true spring salmon Avere in season. It 
reached 20 lbs. in weight." 
At another time Mr. Gibbs Avrites : ' ' The sTciooivl is taken ' fresh' (fresh run ?) late in January, 
at Port Discovery and Hood's Canal," (Puget Sound.) 
