Holt and Calderwood — Rej^ort on the Rarer Fishes. 445 



the post-temporal bone, in order to show the head portion of the air-bladder. In 

 the body-region, the kidneys become flattened and thin, and unite in a more or 

 less indefinite manner when they are about the level of the posterior end of the 

 abdominal cavity. At the extreme posterior end of the bladder this single organ 

 is reflected downwards to form a thickened mass, roughly pyramidal in shape. 

 This may be seen in the figure. 



We have not examined the skeletal anatomy of any of our specimens since we 

 know from Giinther's observations ("Cat." loc. cit.) that the species presents no 

 points of special interest in this respect. 



Vaillant has described and figured the Sagitta. 



Grenus Merluccius, Cuvier. 

 Merluccius vulgaris, Fleming. The Hake. (Deep-sea.) 



M. vulgaris, Goode, " Proc. U. S. Nat. Mus.," iii. 1881, pp. 337, 



476. 



Goode, " Bull. Mus. Comp. Zool.," x., 1883, p. 207. 



Vaillant, " Exp. Sci. Trav. Talism., Poiss.," p. 300. 



Holt, " Sci. Proc. R. Dub. Soc," vii., p. 219. 





Hake were taken during the Sm-vey at 115 and 220 fathoms off the coast of 

 Kerry, and at 154 fathoms off the coast of Mayo. The species also occurred 

 abundantly in shallow water. On the New England coast, hake have been taken 

 at a maximum depth of 487 fathoms, spawning examples being secured at depths 

 between the last-mentioned and 250 fathoms (Goode). Vadlant records the 

 species from a maximum depth of 346 fathoms off the N.W. coast of Africa. 



Genus Phycis, Cuvier. 

 Phycis blennioides, Briinner. The Fork-beard. (Deep-sea.) 



P. bUnnioides, Strom., "Norst. Vid. Selsk. Skr.," 1881, p. 76, 1884, 



p. 35. 



„ „ Collett, "Nyt. Mag. f. Naturvid.," 1884, p. 83. 



„ „ Gunther, "Ann. Mag. Nat. Hist.,"iv., 1889, p.417. 



„ „ ScHARFF, " Proc. Roy. Ir. Acad.," 3rd S., i., 1891, 



p. 457. 

 „ „ Holt, " Sci. Proc. Roy. Dub. Soc," pp. 122, 219. 



Fork-beards were taken during the Survey at 154, 220, and 375 to 500 

 fathoms off the coast of Kerry ; and a young example occm-red at 26 fathoms in 



