2 1 2 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



A sing-le specimen, the type, dredged at .station 3772, Matsushima 

 Bay, in 79 fathoms. Jt is 18 cm, in length, and is numbered 51147 



U.8.N.M. 



(«jr7/, a whiff of foam.) 



2^. DEXISTES Jordan and Starks. 

 Dexiates Jordan and Starks, Bull. U. S. Fish Com., XXII, 190-t, p. 624 {rikuzenius) . 



This genus differs from Pseudopleuronectes in having large scales, 

 and the large eyes narrowly separated b}^ a high, sharp, naked inter- 

 orbital ridge. P2ye])all scaly above. E3^es and color on the right side. 



Body fragile. 



[de^iog^ right handed.) 



36. DEXISTES RIKUZENIUS Jordan and Starks. 



Dex'istes rikuzenius Joed.\x and Starks, Bull. U. S. Fish Com., XXII, 1904, p. 

 624, pi. vi, fig. 1 (Matsushima Bay, Suruga Bay). 



Habitat. — Shores of eastern Japan in deep waters. 



Head, 3. SB in length; depth, 2.75; D. 73; A. 59; scales 61 (pores); 

 uppei" eye, 3.1 in head; snout from upper eye, 4.83; maxillary of eyed 

 side, 3.83; of blind side, 3; pectoral of ej^ed side, 2; of blind side, 3; 

 ventral, 3.1; highest dorsal ra3"s, 2.5; median caudal rays, 1.5. 



Body moderately narrow; anterior dorsal curve slightly l)roken by 

 the raised orbital rim; snout blunt, lower jaw projecting, and with a 

 knob developed at S3^mphysis below tip; eyes large, upper slightly the 

 larger and placed farther back; narrowly separated by a high sharp, 

 naked ridge; mouth much larger on blind side; maxillary of eyed side 

 reaching to opposite anterior edge of pupil; teeth blunt and not very 

 even or closely set, in one moderatelv straight row except on blind 

 side of lower jaw, where three or four are irregularlv placed inside 

 the row; gillrakers short and triangular, 7 on lower liml) of arch, 1 

 developed and 2 rudimentary ones on upper limb; scales lai'ge and 

 ctenoid on eyed side, c3^cloid on blind side; spinules on scales very 

 slender, sharp, and numerous; a few scales on anterior pai't of inter- 

 or})ital where it widens on snout; upper eye with apatch of ctenoid scales, 

 each with two or three spinules; a row of small scales running out on 

 each fin ra3^; lateral line without an arch, a branch of it curves down 

 behind eyes and around lower edge of lower eye; dorsal beginning 

 above middle of e3'e; pectoral of e3^ed side longer and more pointed 

 than that of blind side; ventrals equal in length, the last rays the 

 longest; median caudal rays produced, upper edge obliquel3^ truncate, 

 lower slightl3' concave. 



Color brown, with a few irregular inconspicuous dark brown spots, 

 one on lateral line at begiiming of its posterior two-tifths, one near 

 base of caudal, one below middle of lateral line, one near top of pec- 

 toral; small on(\s show^ little color except a few l)rown spots, the one on 

 lateral line the most conspicuous. 



