NO. 2149. JAPANESE MACROUROID FISHES— GILBERT AND EUBBS. 199 



ecfeTies (Gilbert and Cramer)/ from which it differs in the lighter 

 color and much smaller eye (2.4 in head in L. ectenes) ; and L. 

 hehetatus (Gilbert),^ from which it differs in the color, lacking the 

 cross-bars, and in the fin formula (D. II, 12; V. 8; P. 24, in Z. 

 hehetatus). 



(Darus, from " Dara," the Japanese name of certain Macroiiroid 

 fishes.) 



26. LIONURUS SPINOSUS, new species. 



Plate 10, fig. 2. 



Type-specimen. — 280 mm. long, from Alhatross station 4915, in the 

 Eastern Sea ; depth, 42T fathoms; Cat. No. 76868, U.S.N.M. 



Dorsal II, 10; ventral, 8; pectoral, 21. 



Dorsal contour slightly and gently curved from tip of snout to 

 origin of dorsal; base of first dorsal only moderately oblique; width 

 of body over pectoral bases 1.8 in head ; width of tail, near middle of 

 its length, one-third its depth. 



Head firm, the sensory canals little developed. Snout conic, its 

 preocular length 3.4 in head, preoral length equal to diameter of 

 orbit; a scaleless groove behind anterolateral margin of snout be- 

 tween the lateral and the terminal tubercles; a groove above the 

 scale-row of the suborbital ridge; terminal tubercle strong, double, 

 each half with about six rows of strong spines, arranged on a hemi- 

 spheric base ; lateral tubercles, and the margin of the snout between 

 the tubercles with similar but smaller spines. Margin of preopercle a 

 little curved, nearly vertical, its angle rounded ; a triangular portion 

 of the interopercle visible behind the preopercle; no ridges except 

 the suborbital, which is little oblique and extends to below posterior 

 margin of pupil. Orbit round, 3.7 in head. Least interorbital width, 

 above middle of pupil, one-fourth length of orbit; least suborbital 

 width 2.2 in orbit. Mouth wide, the maxillary as long as the snout, 

 extending to below posterior margin of pupil. Teeth in wide villi- 

 form bands in jaws, the outer premaxillary series consisting of 

 enlarged teeth, larger than usual in Lionurus., the longest 0.15 the 

 length of orbit. Barbel slightly more than half as long as orbit. 

 Seven branchiostegals. Seven tubercular gill-rakers on the lower 

 limb of the outer arch. 



Eight scales in a series from origin of second dorsal to the lateral 

 line, not including the lateral line scale. Scales with long retrorse 

 spinules, arranged in quincunx order, the longest frequently extend- 

 ing beyond the scale a distance -equal to one-third the width of the 

 scale. Those anterior to the dorsal and on the head (excepting the 



^ Macrourus ectenes Gilbert and Cramer, Proc. U. S. Nat. Mus., vol. 19, 1897, p. 423, 

 pi. 44, fig. 1 ; Gilbert, Bull. U. S. Fish Comm., 1903 (1905), pt. 2, p. 667. 



^Maerourus heletatus Gilbert, Bull. U. S. Fish Comm., 1903 (1905), pt. 2, p. 671, 

 fig. 262. 



