REPORT ON THE DEEP-SEA FISHES. 51 



Himantolophus groenlayidicus. 



Himaniolophus groenlandicus, Reinb., K. dansk. Vidensk. Selsk. Afhandl., 1837, p. 74. 



„ „ Liitken, K. dansk. Vidensk. Selsk. Skriv., 1880, p. 320, tab. ii. 



fig. 5 (end of dorsal filament). 



B. 6. D. 1 I 9. P. 12. 



'Jlic height of the body is two-fifths of the total length. 



A .single much injured specimen, 23 inches long, was obtained off the coast of 

 Greenland. 



Himantolophus reinhardti. 



Ilhnantoloplnis reinhardli, Liitken, lor. cit., p. 309, tab. i., tab. ii. figs. 1-4. 



B. G. D. 1 I 5. A. 4. C. 9. P. 17. 



Tlie height of the body is three-fourths of the total length. 



One specimen, 14 inches long, was likewise discovered oft" the coast of Greenland. 

 Whether some young specimens obtained in Mid-Atlantic, and referred by Liitken to this 

 species, l)elong to it or to some other species, cannot be decided from tlie materials at 

 l)resent avai]al)le. 



Aegasonichthi/s. 

 AegaMHtchthijs, Clarke, Trans. New Zeal. Inst, vol. x., 1878, p. 245. 



Head excessively large and broad ; body short. Eyes small. Mouth exceedingly 

 wide and vertical. Jaws armed with bauds of teeth unequal in size and depressible ; 

 palate toothless. Skin with scattered, large, round' scutes, each ending in a spine. The 

 s[iinous dorsal reduced to a single tentacle ; tlie soft dorsal and anal very short. Ventrals 

 none. Pectorals well developed. Gills ? 



Unfortunately nothing is known of the gills of this fish, which, as regards grotesqueness 

 of form, surpasses the fishes of the preceding genus. It is evidently closely allied to 

 Himantoloj^hus reinhardtii, and I therefore suppose that it possesses the same number 

 of gills. If this should prove to be the case, the question will arise whether it should be 

 kept as the type of a distinct genus. According to the figure Aegwonichthys would 

 nppear to be much more depressed in shape than Himantolophus; however, we must 

 remember that these fiticcid deep-sea fishes may assume, or be made to assume, very 

 difterent appearances. 



