166 



SCANDINAVIAN FISHES. 



Icebis liamatus, Kr0YEE, Naturh. Tidskr. Kbhvn, ser. 2, vol. 1, 



pp. 253 et 262; Id., Fo.y- Scand. etc. (Gaim.) tab. I, fig. 2. 



Malmgr., Ufvers. Vet.-Ak.id. Forh. 1864, p. 507; EsM., 



Forh. Skatul. Nalurf. M. Christ. 1808, p. 518; Coll., Vid. 



Selsk. Forh. Christ. 1874, TillKgsh., p. 35; Ltkn, Vid. 



Meddel. Naturh. For. Kbhvn 1876, p. 380; Gthe, Proc. 



Zool. Sec. Loud., 1877, p. 293; Coll., Vid. Scdsk. Forh. 



Clirist. 1870, No. 1, p. 14; Id., Norsh. Nordh. Exp., Zool., 



FUke. p. 34. tab. I, %. 8; Lillj., So., Norg. Fislc, vol. 



I, p. 104; Bean, Bull. U. S. Nat. Mus., No. 15, p. 128; 



Joed., Gilb., ibid.. No. 16, p. 691; Coll., N. Mag. Naturv. 



Christ., vol. 29 (1884), p. 50. 

 Icelns fiirciger, Malm, Forh. Skand. Naturf. M. Stockli. 1865, 



p. 410; Gb(js, Boh. Fn., p. 393. 



Obs. Though Reinhaedt states that the number of branchio- 

 stegal rays in Cottus bico7'ms is 7, still from the rest of his brief 

 remarks on the species it seems highly probable, as Malmgeen has 

 already asserted, that this species is identical with Kroyer's Icelus 

 hamatus, especially as a variation from 6 to 7 in the number of the 

 branchiostegal rays, though not observed in anj' other case in this 

 species, is fairly common in the following genus. 



Cenfridermlchthys hamatus is a fairly coininon spe- 

 cies in Spitzbergen, where it has been fonnd in most 

 of the places examined by the Swedish expeditions, 

 among the alga^ and on a stony, sandy or clayey bot- 



tom, ;it a deptli of from 6 to 80 fathoms. During the 

 Norwegian Arctic Expedition it was taken off Jan- 

 May en Island ;it a deptli of 95 fathoms. On the coast 

 of Greenland the species seems to be equally common; 

 and the largest specimen known, a female 115 mm. in 

 length, is mentioned by Lutken as taken there. During 

 the "Sophia" Expedition of 1883 it was taken on a 

 clayey l)ott()m, at a dejjtli of from 10 to 20 fathoms, 

 north of Cape York; and according to Gunthek it is 

 one of the most common fishes in these regions between 

 latitudes 80° and 82° N. According to Jordan and 

 Gilbert it occurs on the coast of Alaska; and the Vega 

 Expedition obtained specimens from the coast of Siberia 

 west of Tai^nyr Peninsula. It is thus a circumpolar 

 species, but roves south in the Atlantic as far as the 

 Skager Rack, where a specimen 52 mm. in length was 

 taken by A. W. Malji in 1861, at a depth of less 

 tlian 20 fathoms, oft" Loken at the entrance of Gullmar 

 Fjord. Its food is probably the same as that of the 

 preceding species: we liave found in its stomach num- 

 bers of the bristles of Annelidans. 



Genus TRIGLOPS. 



Tioo distinct dorsal fins. Lateral line covered iritJi scales, irhich are dentafed at the upper margin of the opening 

 ducts; a roiv of spinous plates along each side of the dorsal fins; the rest of the skin naked, rerntcose {on the 

 head and above the lateral line) or gathered into oblique, transverse folds, fringed or dentnted at the margin {on 

 the sides beloiv the lateral line). Head middle-sized and, like the anterior part of the bodtj, posteriorly elevated 

 and compressed. Four simple spines in the margin of the preopercidum. Jaws and the liead of the vomer iriih 

 teeth, but the palatine hones toothless. Branchiostegal membranes inferiorhj united, but free from the istJimas. 

 Gill-slit behind the fourth branchial arch shrunk into a hole. Urogenital j)apilla of the male long. Bags iu the 



anal fin more than 20. 



The genus Triglops was first introduced into the 

 system in 1832 by Reinhardt", as a subgenus of Cottus, 

 on account of the smaller size of the head; the nar- 

 rower pectoral fins with their lower rays free to a 

 greater extent; the greater breadth of the preorbital 

 ])one; and the large number of rays in the posterior 



dorsal and the anal fins. As a genus, however, its 

 characters were more fully gi\en first b}' Kroyek, in 

 1845. It contains only one known species, named after 

 the explorer of Greenland, Dr. Pingel, who in 1829 

 obtained the first specimen known. 



" Da 



Vid. Selsk. Naturv. Math. Afh., 5:te Deel Overs. ]>. LII. 



