3b8 



FLATFISUKS (JUCTEROSOMAIA) 



much largiT than those of outer. Scales all cycloid ; about 140 in a longitudinal 

 series above lateral line. Lateral line nearly straight ; no supratemporal branch. 

 Dorsal 04-107; origin well behind posterior nostril of blind side, above middle or 

 anterior jiart of eye ; highest rays about -J length of head. Anal 79-86 (8g) ; inter- 

 hac-nial spine strong. Pectoral of ocular side with 11 or 12 rays (4 or 5 branched), 

 fourth ray longest, length 2i to 3 in that of fish (without caudal)' ; pectoral fin of 

 blind side not produced. Pelvics with 6 rays. Caudal with 23 or 24 rays (14 or 15 

 branched), rounded ; caudal peduncle i| to ij times as deep as long. 2 or 3 -|- 3 

 pyloric appendages of moderate length. Vertebrae 65 (13 -\- 52). Brownish or 

 greyish ; both sides of body and fins speckled with fine black dots, which are fewer, 

 larger and more scattered on blind side ; all the fins dusky towards their edges. 



I-'IC. 2bb.~Glyplaccphalus zaclnrus. B.M. (N.H.) 90 



Type. — Not traced. 



Distribution. — Pacific coast of North .America, from the Bering Sea to San 

 Francisco ; in rather deep water. 

 Specimens E.xamined : 



I (3Jomm.). 

 I (230 ,, ). 

 3 (3o.'>-34o mm.) 

 I (260 ,, ). 



Rarely exceeds a length of 12 inches 



46° 09' \., 124 z:' \V. 



OH central talifonua (37' ji' N.. i:y W.), 217 fms. 



Pt. Reves, Cal. 



U.S. Nat. Mil 



Genus 25. I.IOPSETTA. 



I.iopsetta, Gill. 1864, Proc. .\cad. Nat. Sci. Phi 



Evermann, i8q8, Bull. U.S. Nat. Mus.. xl 



(10) xi, p. 221. 



i.uchalarodus. Gill, 1H64, torn, cit., pp. 216, 22] 



i.areus. Hubbs, lois. Pror. U.S. Nat. Mus., .x 



[Huchalarodus putnami, 

 Ivin, p. 4S6 [Pleuronectcs 



g,lahm, Storcr) ; Jordan and 

 1933, Ann. Mat;. 'Nat. Hist., 





Body oblong, compressed. Eyes on the right side, separated by a low, narrow 

 ridge, which may be naked or scaled, the upper close to edge of head ; snout and 

 eye-balls not scaled ; postocular ridge rugose. Olfactory laminae few in number, 

 nearly parallel, without rachis. Mouth rather small, the length of the maxillary 

 on blind side less than \ that of head ; jaws and dentition stronger on blind side 

 of head ; teeth compressed, incisor-like, forming a more or less continuous cutting 



' Shorter in the young. 



