REPORT ON THE DEEP-SEA FISHES. 135 



scale is spinous. There are eight scales in a transverse series between the first dorsal 

 and the lateral line. Second dorsal spine somewhat produced, armed along its anterior 

 edge with barbs pointing upwards and rather closely set. The second dorsal fin 

 commences at a distance from the first which is less than the length of the head. The 

 outer ventral ray n6t, or but slightly, produced. Lower part of the head and antero- 

 superior portion of the first dorsal black. 



Habitat.— South of Portugal, Station IV.; depth, 600 fathoms. Two specimens, 



8 to 9 inches long. 



This species is very closely allied to Macrurus rudis, from which it differs, however, 

 in several minor points, such as the number of ventral rays, the size of the dorsal 

 profile, &c. The interorbital space is conspicuously narrower, when specimens of the 

 two species of nearly the same size are compared. In a specimen of Maa-urus sequalis, 



9 inches long, the greatest diameter of the eye is 13 mm. long, and the interorbital 

 space only 9 mm. wide. 



The type of Macrourus serratus of Lowe is lost, and the short diagnosis he has given 

 of it docs not enable us to decide which of the closely allied species — Macruinis scler- 

 orh]/7ichus, Macrurus lequalis, Macrurus hairdii, Macrurus goodii — he had before him. 

 As he distinctly says that the ventral fin is produced into a filament, I cannot refer the 

 specimens meutioucd above to his species, as I should otherwise have been inclined to do. 



One of the specimens has been mentioned and rudely figured by Sir Wyville 

 Thomson,^ under the name of Coryphaenoides serratus.^ 



Macrurus hairdii (PI. XXXII. fig. B). 



Macrurus hairdii, Goode and Bean, Amer. Journ. Sci. and Arts, vol. xiv., 1877, p. 471 ; and 

 vol. xvii., 1879, p. 40; Proc. U.S. Nat. Mus., vol. iii, 1881, p. 475; 

 Bull. Mus. Comp. Zool., vol. x.. No. 5, 1883, p. 195. 



D. 12. A. 117. p. 18. V. 7. 



This species is very closely allied to Macrurus aBqualis, but distinguished from it by 

 a distinctly longer snout, which is nearly equal to the diameter of the eye, and by the 

 smaller number of ventral rays (seven). 



iJrtfcitof.— Specimens were obtained by the American surveying vessels, at various 

 localities off the coast of New England, in 160 to 740 fathoms. 



» The Atlantic, vol. i. p. 118, fig. 3. 



! Altliougli the matter is of no importance, I must apologise to M. Vinciguerra for having inadvertently misin- 

 formed him in a letter as regards my determination of that specimen (see Ann. Mxis. Genov., vol. xviii. p. 566). I con- 

 founded the specimen with the one which I have referred to Macrurus sckrorhynchus. 



