390 FISHERIES OF THE UNITED STATES. [4 J 



determined, but this catalogue deals with established facts of distribu- 

 tion as far as these are known to the writer. 



The maximum size of the species, its importance as food or bait, and 

 its reproductive habits, are briefly touched upon. 



By far the greater portion of the fishes in alcohol are duplicates, and 

 may be exchanged for other species of the same class which are desired 

 in the Museum; a few, owing to their rarity, or to the circumstance 

 of their being typical of the species, should be returned after the close 

 of the Exhibition ; these are plainly marked (E) after the catalogue 

 number of the species. 



From these general remarks we may pass on to a brief survey of the 

 several groups of fishes exhibited, beginning with 



THE ALASKAN FISHES. 



The whole number of species at present known from this Territory is 

 123. These are, almost without exception, littoral species and inhabit- 

 ants of moderate depths ; deep-sea exploration in Alaska has not yet 

 been attempted. The only species that may be considered along with 

 those of the deep water are the following: Eumicrotremus spinosus, 

 Triglops pingelii, Alepidosaurus wsculapius, Alepidosaurus borealis, CM- 

 mcera colliei, the species of Eaia (Mnoculata and parmifera), and Squalus 

 acanthias. 



In a Preliminary Catalogue of the Fishes of Alaskan and Adjacent 

 Waters* I have recorded 110 species as occurring in Alaska. Five of 

 these are not definitely known to exist now in the Territory ; they are 

 the following : Pleuronectes franMinii, Murcenoides dolichogaster, 8almo 

 irideus, Acipenser medirostris, and Eaia batis Pall. Pleuronectes frank- 

 linii is, in my opinion, identical with P. glacialis Pall. Murcenoides 

 dolichogaster has not been found by any collector within the last twenty 

 years. Salmo irideus seems to be identical with 8. gairdneri. 



The example of Acipenser medirostris referred to by me was from the 

 Sacramento Eiver ; no sturgeon is yet reported from Alaska. Eaia 

 batis of Pallas (not of Linne) may be B. parmifera Bean. 



The following species are to be added to the catalogue ; they were 

 collected mainly by Capt. Henry B. Mchols, U. S. 1ST. : 



Psettichtliys melanostictus (Grd.). 



Parophrys ischyurus Jor. & Gilb. 



Xipliister mucosas (Grd.) Jordan. 



Delolepis virgatus Bean. 



CMrolophus polyactocephalus (Pall.). 



Potamocottus gulosus (Grd.). 



Sebastichthys nigrocinctus (Ayres) Jor. & Gilb. 



SebasticMhys nebulosus (Ayres) Jor. & Gilb. 



Micrometrus aggregaius Gibbons. 



*Proc. U. S. Nat. Mus., iv, pp. 239-272, December 24, 1881. 



