121. MACRURIDJi: — MACRURUS. 811 



Teetli villiform or cardiform, in bands; on the jaws only; tip of lower 

 jaw witli a barbel; preniaxillary protractile. Dorsals two, the first 

 short and high, of stiff, spine-like branched rays; the second dorsal 

 very lonj^, of very low feeble rays, continued to the end of the tail; 

 anal fin similar to the second dorsal, but much higher; no caudal fin; 

 ventrals small, subjugular, each of about 8 rays. Branchiostegals 6 

 or 7. Lateral line present. Gills 4, a slit behind the fourth. Gill- 

 rakers very small; gill-membranes narrowly united to the isthmus; no 

 pseudobranchias; pyloric cceca numerous; air-bladder present. Genera 

 about 5 ; species about 15, chiefly of the northern seas, in deep water. 

 (Macruridw Ghnther, iv, 390-398.) 



a. Scales of moderate size. 



b. Suout profluced, conical ; cleft of mouth entirely inferior Macrurus, 447. 



bb. Snout short, obtuse, truncated; cleft of mouth lateral. 



CORYPHiENOLDES, 448. 



A**.— MACRURUS Bloch. 

 (Lepidoleprus Risso.) 

 (Macrourus Bloch, Ichth. v, 152, 1787: type Macroicrus rupestris Bloch, not of Gunner.) 

 Snout broadly conical, high, projecting beyond mouth; mouth mod- 

 erate, its cleft horizontal, U-shaped, entirely inferior; teeth of the outer 

 series not enlarged; head sometimes with roughened bony ridges, one 

 of which, on the suborbital and preorbital, simulates the suborbital 

 stay of the Cottoids; eyes very large; scales very rough, keeled, the 

 keels usually ending in spines. Deep water fishes ; mostly northern. 

 This genus grades into the next, and is iDerhaps unworthy of retention. 

 [tj.uxp(>^^ loug; ouftd^ tail.) 



a. Suborliital region with a conspicuous bony ridge extending from the preopercle 

 along the suborbital and preorbital to the end of the projecting snout. 



t351. I?I. fabi'icii Suudevall. — Bat-tail; Grenadier. 



Dusky, inside of mouth and gill-openings black ; peritoneum black. 

 Snout sharp, nearly as long as eye, 3 J in head; an area of loose, rough- 

 ish, naked skin between the suborbital ridge and the mouth; supra- 

 ocular and occipital ridges present, the interocular space concave. 

 Scales each with a longitudinal serrate ridge ending in a spine; first 

 ray of dorsal denticulated toward the tip; vent behind oiigin of second 

 dorsal; 5 rows of scales between first dorsal and lateral line. Head 4^; 

 depth G. Eye 3 in head. D. 12-124; A. 148; V. 8; Lat. I. ca. 125. 

 Massachusetts to Greenland and Norway, in deep water; not rare. 



{Coryphcrna rupestris Miiller, Zool. Dan. Prodr. 177(>, 44:? (not of Gunner): Macrotirus 

 rupestris Bloch, i, 152: Macrurus rupestris Giinther, iv, 390: Macrurus J'abricii Sunde- 

 vall, Vet. Akad. llandl. 1840, 6.) 



