ZOOLOGY. 327 



variety is the silver salmon, with forked tail. It is not very abundant, and does not run in 

 schools. Weight, 15 to 18 pounds; average, 13.&quot; He also inentiot s a small unspotted salmon, 

 which the Indians say grows no longer than 18 inches. 



The Indians probably confuse several species under the name of satsnp, and perhaps consider 

 all silvery salmon, with red flesh and forked tails, as one species. 



NOTE. Mr. Girard describes the species as follows. The color being taken from the pre 

 served species are, of course, unnatural, and should have those given above substituted : 



&quot;Sp. CH. Body very much depressed, rather deep upon its middle region, and quite tapering 

 posteriorly. Head moderate, constituting the fifth of the entire length. Jaws equal. Maxillary 

 slightly curved; its free extremity extending to a vertical line drawn posteriorly to the orbit. 

 Anterior margin of dorsal fin nearer the extremity of the snout than the insertion of the caudal 

 fin. Bluish gray above; silvery along the middle of the flanks; yellowish beneath.&quot; GIRARD. 



4. SALMO TSUPPITCH, Rich. 



SYN. Salmo tsuppitch, RICH. F. B A. Fishes, 1836, 224. DEKAT, N. Y. Fauna, IV, 1842. STOKER, Synop. 1846, 197. 

 HERBERT, Supplem. to Fish and Fishing, 1850, 39. [Non fario tsuppitch, GRD. Pr. A. N. Sc. Phil. VIII, 1856, 

 218. IB. Gen. Rep. Fishes, P. R. R. Reports, 1858, vol. X, 310.] 

 ? While salmon, SETTLERS ON THE COLUMBIA. 

 ? Silvery-white salmon-trout, LEWIS and CLARK. 



FIGURES. The plate (LXIX, figs. 1 4) in this volume represents the Salmo Gibbsii, and not this species. (See remarks on 

 S. Gibbsii ) 



Sp. CH. Convexity of dorsal profile rising gradually to origin of first dorsal, declining from thence to the tail. Caudal 

 forked. Head small, exactly conical, terminating in a pointed snout. Commissure of mouth very slightly oblique. Back of body 

 and head studded with oval and circular spots ; sides and fins, including the caudal, destitute of spots. Teeth minute and sharp ; 

 a single row on each palate bone, a very few on the anterior end of the vomer, and a double row on the tongue. [The 

 foregoing description is deduced from Dr. Gairdner s notes in RICH. F. B. A. p. 224.] 



The portions italicized in the above summary of specific characters are those differing strongly 

 from a correct description of the fish taken by Dr. Girard for this species, and described by me 

 as the S. GiUbsii. 



Dr. Gairdner says that this salmon ascends the Columbia with the ekewan, (late in August 

 and during September.) The formula he gives for the rays is as follows: &quot; Br. 13; P. 13; V. 

 10; A. 13; D. 120.&quot; 



Sir John Richardson says that &quot;a spine containing sixty-four vertebras, and an under jaw 

 with ten curved teeth in each limb,&quot; were all the bones that he could with any degree of 

 correctness identify. (This was owing to the damaged condition of the specimens received.) 

 The dimensions in detail of a specimen twenty-one inches in length are given by Dr. Gairdner. 

 In this the anterior margin of the dorsal was one inch nearer the end of the tail than to the 

 tip of the snout. The teeth were &quot;equal in size with those of the S. Gairdneri, or perhaps 

 rather larger.&quot; 



I have myself never succeeded in obtaining this salmon, but am strongly inclined to the 

 opinion that it is identical with the fish now known to the settlers on the Columbia as the 

 &quot; white salmon&quot; (See remarks on the S. paucidens.) 



SALMO TRUNCATUS, Suckley. 



Short-tailed Salmon ; Square-tailed Salmon. 



Salmo truncatus, SUCKLEY, Ann. N. Y. Lye. Dec. 1858. 



Typical specimen No. 1134, Smithsonian collection. 



SP. Cic. Body fusiform ; dorsal profile moderately arched ; anterior margin of dorsal fin much anterior to a point equi 

 distant between the nose and the insertion of the tail ; head small ; jaws fully provided with small teeth ; tail small, its free 



