2586 Bulletin 47, United States National Museum. 



nostril fossa; a. double series of scales intervenes between the nostrils and 

 the orbit; lower side of snout wholly naked anteriorly, partly scaled lat- 

 erally. Mouth large, overhung by premaxillaries for a distance about ^ 

 diameter of orbit; premaxillaries in advance of nostrils; inaxillaries 

 reaching vertical from posterior margin of pupil, 2f in head; snout about 

 equaling interorbital width; barbel long, orbit. Teeth in cardiform 

 bands of equal width in both jaws, narrowed laterally, but not to a single 

 series; anterior series in upper jaw enlarged, in lower jaw all the teeth of 

 equal size. Preopercle broadly rounded, the angle but moderately pro- 

 duced, a narrow strip of the iuteropercle visible for its entire length ; 

 outer gill arch partially joined to cover, as usual; gill rakers obsolete; 

 gill membranes united, forming a wide free fold across isthmus posteriorly. 

 Scales without ridges, their exposed surfaces thickly beset with spines 

 which are usually without definite arrangement ; the marginal spine 

 longest, thence decreasing in length to the base, about 40 present on each 

 scale on middle of sides; scales on head crowded, the spines shorter and 

 not directed backward as on the body ; a rosette of short spines on tip of 

 snout; no naked area between ventrals; mandible and gill membranes 

 partly scaled; no considerable naked area in axil of pectorals. Dorsal in- 

 serted over base of pectorals, the length of its base slightly less than \ the 

 interspace between base of dorsals; second dorsal spine rather short and 

 fragile, furnished anteriorly with a series of retrorse spinules, its length 

 slightly exceeding \ that of head, its tip not reaching origin of second 

 dorsal; origin of anal fin well in advance of second dorsal; the vent unu- 

 sually far forward, its distance from base of ventrals 2 to 2| in its distance 

 from anal fin ; ventrals less widely separated than in M. scaphopsis, the outer 

 ray produced, extending beyond front of anal; ventrals Avith 10 rays; 

 pectorals with 22 to 24 rays; longest pectoral ray equals | head. Color 

 very dark brownish, lighter on tail; lower side of head, breast, and ab- 

 dominal region, including front of anal and base of pectorals, blue black \ 

 roof of mouth, valvular flap of membrane behind bands of teeth, gill 

 membranes, and upper posterior portion of opercular lining, black; mouth 

 and gill cavity otherwise white; peritoneum bright silvery, with little 

 black specking; fins dusky. (Gilbert.) Coast of southern California. 

 Two specimens, the longest 12 inches in length, from Albatross Station 

 2960, in 267 fathoms, (dretyis, a scraper; henis, scale.) 



Macrurus stelgidolepis, GILBERT, Proc. U. S. Nat. Mus. 1890, 116, coast of southern Cali- 

 fornia, at Albatross Station 2960, in 267 fathoms. 



2963. MACROURUS CINEREUS, Gilbert. 



(POP-EYE.) 



D. II, 10 or 11; ventral 9; 7 scales between lateral line and first 

 dorsal. Eye 3 to 4 in head; snoui about 4, high and blunt, but little 

 overlapping the mouth, terminating in a pointed prolongation of the 

 median ridge, which bears at its tip a bony tubercle furnished with radi- 

 ating ridges; nasal ridges terminating in shorter and smaller, but similar, 

 tubercles, the outline between them concave ; tip of snout overpassing the 

 premaxillaries for its length; eye very large and protuberant; mouth of 



