SALMONOIDE^E. 221 



backwards, or about two-thirds as far back as the palatine-teeth. The gullet is armed with 

 small teeth above and below. The jaw-teeth are as big as those of the Salmon-trout, pi. 92, 

 f. 1. There are sixty-six vertebrae in the spine. The pyloric cceca are very numerous, there 

 being about one hundred and fifty-five of them, and their insertions surround the intestine 

 from the pylorus until it makes a bend downwards, below which they continue to be inserted 

 for a short way on one side of the gut only. 





Inches. 



Lines. 





Inches. 



Lines. 



Length from end of snout to tip of caudal 



15 



6 



Length of alimentary canal 



. 13 



10 



„ „ end of its central rays 



14 



5 



„ from gullet to bend of stomach 



4 







„ „ end of scales 



13 



5 



„ bend to pylorus . 



1 



1 



,, of lateral line . 



10 



10 



„ pylorus to last caecum 



3 



6 



,, intermaxillaries . . . 







8 



,, of remainder of gut 



. 5 



3 



„ labials .... 



1 



3| 









„ lower jaw . . . . 



2 



1* 







R.] 



[83.] 12. Salmo Gairdnerii. (Richardson.) Gairdners Salmon. 



Queachts. Natives of the Banks of the Columbia*. 



[The specific name which I have given to this salmon is intended as a tribute to 

 the merits of a young though able naturalist, from whom science may expect many 

 important acquisitions, and especially in the history of the Zoology of the North- 

 west coast of America, should his engagements with the Hudson's Bay Company 

 permit him to cultivate that hitherto neglected field of observation. — R.] 



" This species ascends the river in the month of June, in much smaller numbers 

 than the quinnat, in whose company it is taken. Its average weight is between six 

 and seven pounds. 



" Colour. — Back of head and body bluish-grey ; sides ash-grey. Belly white. The only 

 traces of variegated marking are a few faint spots at the root of the caudal. Form. — Profile 

 of dorsal line nearly straight, tail terminating in a slightly semilunar outline. Ventrals cor- 

 respond to commencement of dorsal and adipose to end of anal. Teeth. — Jaws fully armed 

 with strong hooked teeth, except a small space in centre of upper jaw. Vomer armed with 

 a double row for two-thirds of its anterior portion. Palate-bones also armed with strong 

 teeth. Fins.— Br. 11—12; P. 13; V. 11 ; A. 12. 



* From an accidental transposition of the labels, the right application of the Indian names to this fish and Salmo 

 paucidens is somewhat doubtful. 



