FISHES SALMONIDAE FAEIO TSUPPITCH. 



311 



is likewise sub-concave. The ventrals are well developed and inserted opposite the middle of 

 the dorsal. The pectorals are longer than the ventrals, and, like the latter, conspicuously 

 developed. The formulae of the rays is as follow : 



Br. 13 : 12 ; D 13, ; A 14 ; 5, 1, 9, 8, 1, 4 ; V 10 ; P 14. 



The anterior two rays in both the dorsal and anal fins are rudimentary ; the accessories in 

 the caudal may prove more numerous, since our investigations were conducted upon a prepared 

 skin. 



The scales are of medium size,, sub-elliptical, longer than deep, and somewhat irregular in 

 the lateral line, which runs nearly straight along the middle of the flanks. The dorsal scales 

 are a little smaller than the abdominal ones ; the concentric stria in all of them being obliterated 

 upon their posterior margins. 



The ground color of the dorsal region is olivaceous, clouded with bluish brown undefined 

 patches, and scattered over with roundish black spots, of which a few only are observed below 

 the lateral line. The sides and inferior region of the body are unicolor, yellowish brown. The 

 dorsal fin, the adipose, and the caudal are densely spotted with black, whilst the inferior fins 

 are unicolor. The upper surface of the head is bluish black ; the sides being yellowish brown, 

 like the flanks. 



The above description and the figure annexed thereto were made from a preserved skin. 

 The specimen, which is two feet and two inches in total length, was caught at Fort Dal es, 

 Columbia river, and preserved by Dr. Geo. Suckley, under Gov. I. I. Stevens. The following 

 is from Dr. Suckley s notes : 



&quot;Fort Dalles, 0. T., April 5, 1855. A female salmon trout; weight five pounds ; length 

 twenty-six inches, girth eleven inches ; specimen of average size ; was full of roe nearly 

 mature. Tail and upper fins olive (yellowish), spotted with round and oval black spots, about 

 two lines in diameter. Upper part of head and back rich olive ; scales reflecting bright silver. 

 A dark pink or salmon colored band extends its whole length on each side both above and 

 below (including) the lateral line. This last may be a post mortem change. Belly silvery 

 white. Iris golden. Chin white. Dorsal fin same as tail. Ventrals and anal yellowish and 

 vermilion ; pectorals darker. Flesh reddish cream colored. Walla- Walla name, Shooshines ; 

 Wasco name, Icquansek (last syllable gutteral ighk ).&quot; 



This quotation shows how much the coloration may be altered on specimens either prepared 

 as skins or else preserved whole in alcohol. 



References to the figures. Plate LXIX, fig. 1, represents the female sex of Fario tsuppitch, 

 considerably reduced. 



Fig. 2 is a scale from the dorsal region. Fig. 3, a scale from the lateral line. Fig. 4, a 

 scale from the abdominal region. Figs. 2 4 being magnified views. 



List of specimens. 



