214:0 Bulletin 47, United States National Museum. 



dd. Pectoral fla more or less deeply notched, not divided to base. 



e. Lower jaw projecting. P. 16 ; D. 57 ; A. 43 ; head 5J in length ; 

 depth 5|. MENTO, 2475. 



ee. Lower jaw included. 



/. Pectoral rays 31; head 6J in length; depth 6. D. 65; 



A. 55. COPEI, 2476. 



ff. Pectoral rays 30; head 5 in length; depth 6^. D. 5fi; 



A. 46. DACTYLOSUS, 2477. 



HlLGENDOEFIA : * 



aa. Insertion of pectoral very high, its upper rays above pupil; lower jaw included; 

 pectoral fin notched; gill opening small; head 5; depth 5. I). 65; A. 60; 

 p. 25. ULOCHIK, 2478. 



• Subgenus PARALIPARIS, CoUett. 



2472. PARALIPARIS H0L031ELAS, Gilbert. 



Head about 5; depth about 6; eye 3|. D. 58 to 61; A. 54. Head very 

 large and heavy, with very broadly rounded snout, and much swollen 

 occipital and nuchal regions, the highest point over upper opercular 

 angle, from which point the profile descends rapidly backward, though 

 much less so than in P. cephalus. Snout very blunt, evenly rounded, very 

 slightly projecting beyond the mouth, its width equaling leugth of snout 

 and eye, I leugth of head; eye f interorbital width; mouth large, 

 horizontal, quite at lower side of snout, entirely below the eye; max- 

 illary reaching a vertical slightly behind posterior margin of orbit, 1| in 

 head; teeth acute, arranged in oblique series in each jaw, forming a very 

 narrow band in mandible, a broader band in upper jaw; very large 

 mucous slits on head, 5 forming a series from tip of snout below eye and 

 across cheek, 6 along mandible and preopercle; gill slit wide, extending 

 from above opercular iiap nearly to middle of base of pectorals, its hmgth 

 2| in that of head ; opercle forming posteriorly a narrow angular flap, 

 projecting above base of pectorals; no pseudobranchiic ; vent below oper- 

 cular flap, or souu>what in advance of that point, nearer to base of pec- 

 torals anteriorly than to first anal ray; pectorals inserted very low, the 

 base of upper lobe vertical, the base of notch and lower lobe horizontal," 

 the upper end of base below the level of the eye ; pectorals with 2 wholly 

 distinct lobes, the interspace without free membranaceous margin, the skin 

 of abdomen directly continuous at this point with that of shoulder girdle. 

 On dissecting off the integument, however, the interspace between the 

 lobes is seen to be provided with 2 or 3 short, widely spaced rays, as in 

 all other species examined by us; upper lobe long, reaching beyond front 

 of anal, the rays close set, 18 in number, included in the membranes to 

 their tips; lower lobe consisting of 5 or 6 slender, almost filamentous 

 rays, the longest reaching front of anal, all of them free to the base, 

 without connecting membrane; anterior (lower) ends of shoulder girdle 

 approximate, the rays separated by a distance equaling i diameter of 

 pupil; dorsal beginning above base of pectorals. Color uniformly black, 

 including fins and lining of mouth and gill cavity. Closely allied to P. 



* Named for Dr. Franz Hilgendorf, ichthyologist of the University of Berlin. 



