362 FLATFISHES (HETKKOSnMAlA) 



Diameter of eye 2 J to 2i in length of head ; lower eye well in advance of npper, which 

 enters largely into dorsal profile of head ; eyes separated by a high, rather sharp, 

 --shaped, scaled ridge : postocular ridge not apparent- The length of the maxillary 

 about J or I that of head ; lower jaw a little projecting. Teeth broad, mcisor-like. 



shghth- notched .it tip; dental formula on blind side — . Gill-rakers weak, rather 



21 



short : 10 or 11 on lower part of anterior arch. Scales cycloid, about i(>5 in lateral 

 line. Dorsal 111-117; origin above posterior part of eye; highest rays | length 

 of head. Anal q6-g8. Pectoral with 11 rays, length about J that of head. Pelvics 

 with 5 rays, small. Caudal small, rounded ; caudal peduncle short. Brownish, 

 darker towards margins, becoming black on median fins ; body and fins coarsely 

 blotched with pale blue, the marks so arranged on upper and lower thirds of sides 

 as to form 5 broad bluish bars, alternating with those of the ground-colour 

 and corresponding above and below ; lips and branchiostegal membranes black ; 

 blind side dusky brownish. 



TvPH. — United States National Museum. No. S7581 (paratype). 



Distribution. — Coast of California, from south of Monterey to Santa Barbara 

 Isd. ; in deep water. 



The species was originally described from two specimens from the Santa 

 Barbara Channel (33" 49' N., 119' 24' W.). in 603 fathoms. Other examples were 

 recorded by Townsend and Nichols from 440 to 659 fathoms. 



Genus 23. TANAKIUS. 



Tanakius. Hubbs. I'llS, Annot. Zool. Japon.. ix. p. i7u [Murnstomus kitulmt<c. Jord.m .ind St.irks] ; 

 Hubb<i, I0J2, Ore. P.ip. Mus. Zool. Univ. .\Iirh., ^^c,, p. ;. 



Apparently related to Dexistes, but with an increased number of dorsal and anal 

 rays and vertebrae. Body elongate-elliptical. I'pper surfaces of eye-balls scaled. 

 Lips not thick ; teeth well developed on both sides of jaws ; compressed and incisor- 

 like, close-set. Gill-opening extending above axil of pectoral. Dorsal with 84 to 

 102 rays ; commencing well behind posterior nostril of blind side. Anal with 75 to 

 81 rays ; tip of first interh;emal spine not projecting in front of fin. A few rays at 

 hinder ends of dorsal and anal fins branched ; fin-rays not stout. Skm thin ; scales 

 well imbricated, not embedded, cycloid ; no supplementary scales in region of lateral 

 line ; no mucous cavities on blind side of head. Intestine with two coils, the second 

 loop long and extending backwards into the secondary body-cavity of the ocular 

 side ; 2 or 3 -|- 3 or 4 pyloric appendages. 



A single species from Japan. 



Hubbs (1918) has pointed out the general similarity in appearance between this 

 genus and Dexistes, and originally placed the two in the same genus. Dexistes would 

 appear to be more nearly related to Limanda and Psendopleuronecies. 



I. TANAKIUS KITAHAR.F: (Jordan and Starks). 



Plcuronectcs c\iwi;linsus {non Linnajus), Otaki. 1897, Journ. Fish. Bur. Tokyo, vi (i), p. 7. pi. vi, 

 fig. "• 



Microstomtts kitaharo', Jordan and Starks, 1904, Bull. U.S. Com. Fish., xxii. (1902), p. 6:35, pi. vu, 

 fig. 2 ; Jordan and Starks, 1906, Proc. U.S. Nat. Mus., xxxi, p, 22.^, fig. 21 ; Jordan, Tanaka 

 and Snyder, 1913, J. Coll. Sci. Tokyo, xxxiii (i), p. 332 ; Hubbs. 1915, Pror. U.S. Nat. Mus., 

 xhiii. p. 490 ; Soldatov and Lindberg, 1930, Bull. Pac. Sci. Fish. Inst., v, p. 413. 



Dctistc [lanakius) kitaham, Hubbs, 1918, Annot. Zool. Japon., ix. p. 371. 



fnnakius kUahartr, Jordan and Hubbs, 192';. Mem. Carnegie .Mus., x, p. 300 ; Hubbs, 1032, Occ. 

 Pap. .Mus. Zool. Univ. Mich.. 249. p. b. 



i.lyptocephalus kitahar,c (part), Schmidt, 1929, C. R. Acad. Sci. Russ., p. 3(17. 



(.lyptocephalui kitahara, Schmidt, 1931, C. R. .\c,id. Sri. Russ., p. 31S. 



Ghptocephalu!. (Iiumkius) kilnharir, Srhmidt, 1931, Trans. Par. Com. Acad. Sci. U.S.S.K., 11, p. 127. 



