NO. 2149. JAPANESE MACROUROID FISHES— GILBERT AND HUBBS. 203 



along lateral line somewhat interrupted ; bones of head rather soft, 

 intermediate in condition between Lionurus and Cetonu?'us. These 

 species have 5 or 6 ventral rays, while all other species of Lionurus 

 and of Cetonurus have 7 to 17. 



Type-spemmen. — A mature female, 58 mm. long to anus; Alhatross 

 station 5084; 918 fathoms; off east coast of Hondo; Cat. No. 76869, 

 U.S.N.M. 



Dorsal, II, 9 ; ventral, 6 ; pectoral, 18 ; 11 scales between lateral line 

 and origin of second dorsal. 



Body more robust than in L. parvipes^ the depth below origin of 

 dorsal 1.25 in head; trunk more compressed than usual, the width 

 across pectoral bases 2.4 in head; tail slender, and less strongly com- 

 pressed than usual, rather sharply constricted behind anus; depth 

 2.7 in head at a point twice length of head from tip of snout; width 

 of tail about half its depth anteriorly, two-fifths its depth poste- 

 riorly; first dorsal base oblique; sides of head vertical and nearly 

 parallel behind anterior margin of orbit; anterolateral angles of 

 snout prominent, on a vertical passing slightly in front of tip of pre- 

 maxillary, and on a vertical passing through upper part of pupil; 

 distance between lateral angles slightly greater than the inter- 

 orbital width, and nearly equal to length of snout; snout 2.59 

 in head, broadly triangular before the lateral prominences, the 

 terminal angle, viewed from above, being 110 degrees; tip of 

 snout high, on a horizontal passing between the pupil and the 

 upper orbital margin; preoral length of snout 3.9 in head, equal 

 to vertical depth of snout above tip of premaxillaries ; suborbital 

 ridge distinct, curved, and oblique, its length 2.25 in head, both 

 its ends free, not extending to preopercle nor lateral prominence of 

 snout; free margin of preopercle not adnate, extending downward 

 and backward to the evenly curved angle ; in no place entirely over- 

 lapping the subopercle or interopercle, leaving a narrow margin of 

 interopercle visible; preopercular ridge strongly produced back- 

 ward in a semicircular form, its upper vertical portion, above the 

 curve, short, 1.6 in orbit; orbit nearly round, its longitudinal diameter 

 4 in head ; interorbital convex, 3.1 in head ; suborbital angulated at 

 ridge, its least width 1.8 in orbit; mouth oblique, the maxillary ex- 

 tending to below anterior third of pupil; teeth in bands on jaws, the 

 outer premaxillary series slightly enlarged ; barbel slender and short, 

 4.5 in orbit; nostrils in an oval naked fossa, one-third as long as orbit; 

 the posterior margin of the small circular anterior nostril elevated; 

 scaleless groove parallel to anterolateral margin of snout, scarcely 

 developed; head soft, the sensory canals comparatively greatly de- 

 veloped. Branchiostegals 7; 9 tubercular gill-rakers on lower limb 

 of second arch ; slit before first arch constricted, 2 in orbit, slit behind 

 fourth arch, 3. 



