TRAC H YP TER I DTE . 
315 
THE DEALFISH OR VAAGMAER (s\\ r . vogmaeen; norw. solvqveiten). 
TKACH Y PTERUS ARCTICUS. 
Fig. 83. 
The greatest depth of the body, which is deepest at a point nearer the vent than the head or even at the rent 
itself , undergoes even relative increase with age in specimens more than 1 metre in length , and is more than 
15 % ion average about 17 %) of the length of the body, excluding the caudal fin. 
R. hr. 6 “; D. (5 1. 6)|l50 — 180 ; A. 0: P. (1) 11 ft ; V. (8 1. 9) c ; 
C. 8 + (6); L. lat. 94 — 101; Vert. 97 — 100 rf . 
Syn. Vogmere 1. Vogmcer , Lepturus , Olafsen, 1. c. et tab. XLIII; 
Trichiurus Lepturus , Mohr, 1st. Naturh., p. 63. 
Gymnogaster arcticus , Brunn, D. Yid. Selsk. Skr., N. Sami., 
vol. Ill, p. 408, tab. B, figg. 1 — 3; Cuv. ( Gymnetrus ), 
R'egn. Anim., ed. 2, tom. II, p. 219; Faber {Gymnogaster), 
Fische 1st., p. 66; Flem. ( Gymnogaster ), Loud. Mag. Nat. 
Hist., vol. IV (1831), p. 215, fig. 34; Nilss., Prodr. Ichth. 
Scand., p. 107 ; Id. ( Trachypterus ), Slcand. Fn., Fisk., p. 
162; Gthr, Cat. Brit. Mus., Fish., vol. Ill, p. 305; Coll., 
Fork. Vid. Selsk. Christ. 1874, Tillsegsh., p. 78; ibid., 1879, 
No. 1, p. 59; N. Mag. Naturv. Christ., Bd. 29 (1884), p. 69; 
Winth., Zool. Ban., Fiske, p. 17, tab. Ill, fig. 7; Day, 
Fish. Gt. Brit., Irel., vol. I, p. 217, tab. LXIII; Ltkn, 
Vid. Meddel. Naturh. For. Kbhvn 1881, p. 190; Sp. Schn., 
Fork. Vid. Selsk. Christ. 1872, No. 15 cum tab.; Lillj., 
Sv., Norg. Fn., Fistc., vol. I, p. 462. 
Bogmarus islandicus, Bl., Syst. Ichth. posth., ed. Schn., p. 
518, tab. 101 (ex Brunn.); Reid ( Vogmarus ), Ann. Mag. 
Nat. Hist., ser. 2, vol. Ill, p. 456. 
Trachypterus Bogmarus , Cuv., Val., Hist. Nat. Poiss., vol. X, 
p. 346; Reinh. (TV. Vogmarus'), D. Vid. Selsk. Naturv., Math. 
Afh., Deel 7, p. 65 cum 2 tab.; Stuwitz (TV. sp. innom.), N. 
Mag. Naturv., Bd. "2 (1840), p. 277, tab. Ill; Kr., Danm. 
Fiske, vol. I, p. 292; Val. ( TV . Bogmarus ), Voy. 1st. Groenl. 
(G-aim.), Zool. Poiss., tab. 12; Lillj., (TV. Vogmarus ), Vet.- 
Akad. Hand!. 1850, p. 331; Mgrn, Ofvers. Vet.-Akad. Fork. 
1867, p. 261; Esm., Fork. Naturf. Mode Christ. 1868, p. 522. 
Ohs. The ouly tenable distinction hitherto given between this 
species and its Mediterranean relative, Trachypterus iris , is adopted 
in the above specific diagnosis; but the validity of even this cha- 
racter, as shown by the wording of the diagnosis, is only relative. 
Our ignorance of the juvenile stages of Trachypterus arcticus renders 
this character still more doubtful, and our present knowledge on this 
point is most accurately expressed by the following table of averages, 
derived from the observations of LOtken and Emery: 
a 7, according to Reid. 
6 10 — 13, according to Lilljeborg. 
c 6, according to Reinhardt and Lutken. 
d According to LOtken. 
