Jordan a7id Evermann. — Fishes of North A-rnerica. 2581 



width al>oiit 2* in length of head ; postorlntal portion of head about \ its 

 length, 1^ as long as eye, which is circular, its diameter contained 2+ times 

 in length of head. Snout broad, very obtuse, its width at nostril nearly 

 equal to interorbital width, its length 4f times in that of the head ; nostrils 

 normal. Teeth in each jaw in villiform bands, very small; a naked space 

 at the symphysis of intermaxillaries ; vomer and palatine toothless. Gill- 

 rakers very short, minute, and rather numerous, aljout 18 below angle of 

 anterior arch. Pseudobranchi;e absent. Barbel f as long as eye. First 

 dorsal composed of 2 spines, the first minute, inserted at a distance from 

 the snout ec^ual to length of head, the second as long as head without snout, 

 and 10 branched rays, its base ec^ual to diameter of eye; second dorsal 

 almost rudimentary, its rays remarkably short, al»out 133 in number, its 

 distance from first dorsal I length of head; anal much higher than second 

 dorsal, its distance from snout contained about 3^ times in total length; 

 anterior anal rays longest, in length about f diameter of eye; pectoral 

 inserted iinder first branched ray of first dorsal, its length equal to twice 

 that of eye and about | that of head. Scales (on type) mostly wanting, 

 except a few on breast and nape, these being rough with small points, 

 dentate behind. Ventral slightly behind the pectoral, its first ray fila- 

 mentous, reaching to the base of the tenth anal ray, consisting of II rays. 

 Color gray, with silvery tints on sides; abdomen and lips dark. (Goode 

 & Bean.) Gulf of Mexico, in deep water. One young individual known. 

 Length 162 mm. {cavcriiosKS, cavernous.) 



Bathyijadns cavernosuSy Goode & Bean, Proc. U. S. Nat. Mus. 1885, 598, Gulf of Mexico, 

 at Albatross Station 2398, Lat. 28^ 45' N., Long. 86° 26' W., in 227 fathoms (Type, 

 No. 37.337. Coll. AlhatrotiS) -, Gunther, Challenger Report, xxn, 156, 1887. 



Hymenocephalus cavernosus, Goode & Bean, Oceanic IcLthyologj', 408, fig. 341, 1896. 



1006. MACROURUS, Bloch. 



Maeroiirus, Bloch, Ichth., v, 152, 1787 {mpestris =^berglax) . 



Macruroplus, Bleeker, Versl. Med. Akad. Welenth. Ani8terd.,vin, 1874,369 {serralua). 



Macrurue, Gunther, Cat., iv, 392, 1862; corrected spelling. 



Snout broadly conical, high, projecting beyond mouth ; mouth moderate, 

 its cleft horizontal, U-shaped, entirely inferior; teeth in both jaws in villi- 

 form bands, those of the outer series not enlarged ; head with roughened 

 bony ridges, one of which, on the suborbital and pieorbital, simulates the 

 suborbital stay of the Cottoids; eyes very large; scales imljricate, very 

 rough, keeled. Dorsal spine long, serrated on the anterior edge. Deep 

 water fishes, {juaxpoi, long; ovpd, tail, hence correctly written Macrurus, 

 but Maai'onrus is the original name as given by Bloch.) 



a. Top of head with 4 to 6 distinct ridges ; depth 6 to 7 in length ; 5 scales between lat- 

 eral line and dorsal. 

 6. Anal rays 148; scales each with a strong ridge. berglax, 2957. 



66. Anal rays 121; scales each with 3 to 5 spinules, otherwise almost unarmed; 

 ridges on top of head very rough. holotrachys, 2958. 



aa. Top of snout with indistinct ridges or with none, 

 c. Pectoral fin moderate, IJ to 2 in head. 



<(. Body rather elongate, the depth 7 to 8 in length ; bones of head rather 

 Arm; dorsal spine strongly serrated. 



