510 Bullethi 42, United States National Museum. 



Associated with S. alipes aud probably not distinct from it, and like it 

 not entering the sea is 



785b. SALVELINUS ALPINITS STAUNALIS (Fabriciue). 

 (Greenland Chauu.) 



Gill rakers as in alpinus, slender aud straightish, 9 + 15 in number, the 

 longest 2*^ in eye. Body moderately elongate; pectorals shortish, 1| in 

 head, not reaching quite halfway to ventral ; dorsal about as hierh as 

 long, the longest ray If in head. (8i in total length with caudal, accord- 

 ing to Fabricus). Dark green, with lighter irregular green streaks, sil- 

 very below; sides everywhere with pale pink spots, the largest less than 

 eye; upper fins greenish; lower pink. Sea-run specimens nearly plain 

 silvery. Waters of Greenland, Boothia, and neighboring regions, abun- 

 dant ; the specimen examined by us (described in full by Dresel) from 

 Godhavn, Disco Island, (stagnum, a pond or tarn.) 



Snlmo slagualis, Fabricius, Fauna Groenlaudica, 175, 1780, Alpine ponds of Greenland; not 



migratory. 

 Salmo rivalis, Fabricius, 1. c, 176, 1780, Alpine brooks of Greenland; not entering the sea. 

 Salmo heariiei, Kicharh.son, Franklin's First A'oyage, 706, 1823, and in Fauna Bor.-Amer., iii, 



1C7, 183G, Bloody Fall, Coppermine River, lat. 07°; description imperfect; GfJNTiiER, 



Cat., VI, 148, 1S6C. 

 Salmo rossiT; * KiciiARDSON, App. Boss's Voyage, lvi, 1835; and in Fauna Bor.-Amcr., in, 163, 



183G, Regent's Inlet, Boothia Felix. 

 Sah-elinnsrosai, J OUT) Ati &. Gilbert, Synopsis, 321, 1883. 



SulrelDiKS sUcynulis, Dhesel, Proc. U. S. Xat. Mus., 1884, 255; good description. 

 Salmo koodii, KicilAKDSON, Fauna Bor.-Amer., m, 173, 1836; Gunthee, Cat., vi, 151, 1866. 



Represented in the far north by 



785c. SALVELINUS ALPINUS ARCTURtS (Giinther). 



Head 4i; depth 5; D. 11; A. 10; B. 11; ca-ca 31-44. Dull greenish, 

 silvery or reddish below; lower fins yellowish ; no red spots (on speci- 

 mens seen). Body rather elongate; head small, the snout very obtuse; 

 mouth moderate, the maxillary in the male reaching about to posterior 

 margin of orbit ; teeth small ; a band of hyoid teeth ; preopercle with a 

 distinct lower limb; jiectoral little shorter than head, reaching more than 

 halfway to ventral. Caudal moderately forked; scales minute. Length 

 12 inches. Victoria Lake aud Floeberg Beach, Arctic America, lat. 82° 34'', 

 the northernmost Salmonoid known. (Giinther.) {Arcturus, upKTo^, bear; 

 oiipu, tail, name of one of the northern stars.) 



Salmo ai-ctums, Gvnther, Proc. Zobl. Soc. Lend., 1877, 294, pi. xxxii, Victoria Lake, Floeberg 



Beach. (Coll. Capt. Fiolden.) 

 Salvelinus arcturus, Jordan & Gilbert, Synopsis, 319, 1883. 



* The following is the substance of Richardson's account of S. rossi: 



Head 5. B. 12-13 ; D. 13 ; A. 11 ; P. 14 ; V. 10. Dorsal fin low ; pectoral short, adipose fin 

 very small. Esther slender ; snout very obtuse ; lower jaw remarkably long, with a knob at tip 

 (male). Thirty teeth on tongue. Conspicuous pores on the face bones posteriorly. Scales very 

 small, embedded. Olive-brown above, the dorsal and caudal similarly colored ; belly red ; scat- 

 tered red spots near the lateral line. (Named for Captain James Clark Koss, an Arctic explorer 

 by whose party the species was obtained.) 



