2616 Didlctln //, United States National Museum, 



seems to be still more common northward, being, in Alaska, a food-fish of 

 some importance. Altundtint north and south of the Aleutian Islands and 

 in Bristol Bay. Our specimens from Kamchatka agree in all respects; 

 D. 77 to 84; A. 60 or 61. Pectoral not quite \ head. Interorbital ridge 

 sharp, with 1 series of scales ; gill rakers x -\- 14. (_k'ka666oa, to diminish ; 

 68ov<i, tooth.) 



Hippofflossoides elassodon, Jordan & Gilbert, Proc. TJ. S. Nat. Miis. 1880, 278, Seattle; 

 Tacoma (Type, No. 27263. Coll. D. S. Jordan) ; Jordan & Gilbert, Proc. U. S. Nat. 

 Mus. 1880, 454; Bean, Proc. U. S. Nat. Mus. 1881, 242; Jordan A: Gilbert, Synopsis, 

 826, 1883; Bean, Proc.U. S. Nat. Mus. 1883,20; Jordan, Nat. Hist. Aqua t. Anini., 188. 

 pi. 52, 1884 ; Jordan & Goss, Review Flounders and Soles, 241, pi. 5, 1889 ; Jordan & 

 Gilbert, Bept. Pur Seal Invest., 1898. 



2982. HIPPOGLOSSOIDES ROBUSTUS, Gill & Townsend. 



Head 35; depth 2^; eye 5| in head. D. 76; A. 60; scales 95 (pores). 

 Interorbital space a broad, somewhat elevated ridge with 2 rows of scales. 

 Body rather high, its greatest height nearly equaling i the length from 

 snout to base of caudal; profile decurved above the eye; body thick; 

 scales on head separate and rarely touch each other. Gill rakers long, 

 x + ll. Maxillary 2^ in head, directed upward anteriorly; teeth of the 

 single row mostly separated from each other by intervals equal to width 

 of teeth, curved inward, and uniform on the sides ; toward front 4 or 5 

 enlarged, preceded by 2 smaller, leaving the middle toothless; in the 

 lower jaw of nearly uniform size and inclining backward. Pectoral | 

 head; ventrals reaching first or second anal ray. Scales on body ciliated 

 or weakly ctenoid, those on cheek smoother; no ctenoid scales on blind 

 side. Caudal shorter than in H. Jiaviiltoni, If in head. No exserted nasal 

 tubes. Color plain brown. Bering Sea. Only the type known, 12|^ 

 inches long, from which we have taken the above description, {robustus, 

 robust,) 



Hippofjlossoides robustus, GiLL & Townsend, Proc. Biol. Soc. Wash., xi, 1897 (Sept. 17, 

 1897), 234, Bering Sea, Lat. 56'^ 14' N., Long. 164^ 08' W., Albatross Station 3541, 

 in 49 fathoms. (Type, No. 48766, U. S. Nat. Mus. Coll. Allatro>is.) 



2983. HIPPOGLOSSOIDES HAMILTONI, Jordan & GUbert, new species. 



Head 3|^ in length; depth 2|; longest diameter of u^jper eye 3^ in head; 

 snout (measured from upper eye) 5 in head; maxillary of colored side 2^, 

 of blind side 2^, in head; depth of caudal peduncle equaling its length, 

 3J in head. D. 72; A. 56; P. 11; pores in lateral line 91. Upper profile of 

 head continuing the dorsal curve without interruption, there being a slight 

 dejiressiou above the eye and an increased convexity on the snout; man- 

 dible very heavy, projecting anteriorly, so that its symphyseal profile com- 

 pletes the curve of the snout; a very short prominence at symphysis 

 directed vertically downward; gape strongly curved and the mouth nar- 

 rowed anteriorly, so that the maxillary and premaxillary are almost 

 wholly concealed along the middle of their length by the overarching pre- 

 frontal; teeth acute, in a single series in each jaw, all except the anterior 

 teeth in each jaw short; at the symphysis of lower jaw the teeth are 



