76 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



3. SALMO IRIDEUS Gibbons. 



Pacific Coast Broolc Trout. 



1855 — Salmo iridea Gibbons, Proc. Cal. Ac. Nat. Sc. p. 36. 



Salar iridea Girard, Proc. Ac. Nat. Sc. Phila. p. 220, 1856. 



Salar iridea Girard, Pac. R. R. Expl. Fishes, p. 321, 1858, pi. 7.3, f. 5, and pi. 74. 



Salar irideus Jokdan, Catalogue Fishes N. A. p. 431, 1878. 



Salmo irideus Gunthicr, Cat. Fishes Brit. Mus. vi, p. 119, 1867. 



Salmo iridea .Suckley, Monograph Geuus Salmo, p. 129, 1874, 



Salmo irideus Jordan & Copeland, Check List, p. 144, 1876. 



Salmo irideu8 Hallock, Spoitsiiiau's Gazetteer, and of writers on fish and tish- 



cnlture generally. 

 Salmo irideus Jordan, Mm. Vert. ed. 2d, p. 358, 1878. 

 Salmo rirula7-i8 Ayres, Proc. Cal. Ac. Nat. Sc. p. 43. 

 1656 — Fario gairdiieri Girakd, Proc. Ac. Nat. Sc. Phila. p. 219, (not Salmo gairdneri 

 Rich., a species with the "caudal hn seniilunate" and "no hyoid teeth"; 

 heuce neither tin: inesent fish uor S. clarkii Rich.). 

 Fario gairdneri Giraiid, Pac. R. R. Expl. Fishes, p. 313, pi. 71, f. 1-4, 1858. 

 l8i^6— Fario vcwberrii Girard, Proc Ac. Nat. Sc. Phila. p. 224,. 1858, (substitute for 

 gairdneri). 

 Salmo newherrii Sl'CKF-ey, JMonograph Geuus Sahno, p. 159, 1874. 

 Salmo vcH-bcrrni Jokdan & Coi'ELand, Check List, \>. 144, 1870 

 1858 — Fario darkii Girard, Proc. Ac. Nat. Sc. Phila. p. 219, (not Salmo clarkii Rich.). 



FoA-U) clarkii GiRARD, Pac. R. R. Expl. F shes, p. 314, pi. 71, f. 3'-8, 185^^. 

 18<)'1 — Salmo masoni Sucki.f.y, Na'. Hist. Washington Terr. p. 345, (sul>stitutcforc?arA7()' 

 Salmo masoni Sl'CKLEy, Monograph Salmo, p. i;!4, 1874. 

 Salmo masoni Jordan & Copeland, Check List, p. 144, 1876. 

 1860— ? Salmo gairdi ociSuCKLEY, Nat. Hist. Washington Terr. p. ■-31, (not of Richardson). 



'/Salmo gairdneri SUCKI.EY, Monograph Salmo, p. 114, l'-"!. 

 1867 — Salmo p ur pur at us Guntwer, Cut. Fishes Brit. Mus. vi, p. IK), lb()7, (in part ; prob- 

 ably not of V Ha-!, whose spiciniens came from Siberia, ^= Salmo rngkiss Wal- 

 baum, = Salmo muikixi Biocli, both names prior lo I'allas. wlio gives " Mykiss" 

 as the vcrnacuhir name of purpuratns). 



Habitat. — Cilifornia to Briti.slj Coluuibiy, in !stit*ams of or west of the 

 Sierra Nevad.; and Cascade Kati^es. 



This abutjthiut Troiic is represented by seveial s[)ecimens. In Jnstiti- 

 catioii of the above synonymy, I may say that i have examined speci 

 mens purporting to be the types of irideus Gibbons, riuulari.s Ayres, 

 neivherrii Girard, masoni Sackley, and gairdneri iSuckley, <ind that 1 

 have no hesitation in considering all (excepting gairdneri ISuckley) as 

 representatives of a single species. 



The type of S. newherrii., which Dr. Suckley was unable to'tind, is a 

 well-preserved young fish, without hyoid teeth. It has a rather wider 

 maxillary than is usual in irideus and rather smaller scales (33-140-33), 

 and the vomerine teeth are in a single, somewhat zigzag row. Never- 

 theless, I believe it to be an irideus, with which it agrees in every other 

 respect. 



The types of S. masoni, the one a moth-eaten skin and the other a 

 specimen in alcohol, are not different in any respect from the ordinary 

 irideus. Notwithstanding Dr. Buckley's statement that the scales in his 

 type are "double the size of irideiis^\ his typical specimens have each 

 about 130 scales in a longitudinal series, which is about the usual num- 

 ber in irideus. 



