594 
SCANDINAVIAN FISHES. 
is black at the margin. The inside of the month is 
white, the branchial cavity black. 
Macrurus Icevis lias a wide geographical range, but 
is still extremely rare in the museums. It was disco- 
vered off Madeira by Lowe, and the British Museum 
at the beginning of December, 1871. Long before this 
time, however, the Museum of Gothenburg had received 
a specimen through Mr. Deyenbeeg. This specimen 
was dropped on the shore near Lysekil by a seagull on 
the 10th of November, 1852; and has since been de- 
Fig. 141. Macrurus Icevis , seen from the side, together with the forepart, seen from below. 2 / 3 of the natural size. Found at Lysekil, on 
the 10th of November, 1852, by Deyenberg. The property of the Natural History Museum of Gothenburg. 
has acquired another specimen from the same locality , 
through Johnson. But the species was not recognised 
again until Lutken described a specimen that was cast 
ashore on the north of Jutland near the Skaw and found 
scribed at length by Malm in his Goteborgs och Bolius- 
Icins Fauna*. Finally the species has again been found 
off the coast of Pernambuco, where the Challenger Ex- 
pedition took a- specimen at a depth of 350 fathoms b . 
Fam. OPMIBIIDiE. 
Body of a compressed tadpole-like or Eel-like form, ivith elongated, more or less whip-like tail , and covered with 
thin, cycloid scales or naked. All the vertical fins confluent (no distinct caudal, no anterior dorsal fin). Teeth as 
a rule present both, in the jaws and on the vomer and, palatine bones. Gill-openings large: the branchiostegal mem- 
branes more or less united to each, other, but free from the isthmus. Branchiostegal rays usually S or 7 C . Pseudo- 
branchiae and air-bladder generally present 11 . Pyloric appendages only slightly developed or wanting. 
This family consists 
fishes; and the reductions 
nature appear here too. 
in great part of deep-sea 
characteristic of a life of this 
But the same reductions in 
the complete structure of 
affects those fishes of this 
terranean chasms or lead 
the Anacanthine type also 
family which live in sub- 
a kind of commensual life 
“ By the kindness of Dr. Stuxberg, the Curator of the Museum, we have been enabled to make use of this specimen as the original 
of our figure. 
b Whether it occurs in the Mediterranean, is still somewhat uncertain, though probable. In his list of the Mediterranean fishes, how- 
ever, Giglioli gives only a name that might be applied to it; and it is evidently another species that Moreau has described under this name. 
c Exceptionally 6 or even 5. 
d Often wanting, however. 
