PLEURONECTIN^ 319 



Depth of body i| to twice in the length, length of head 3} to 4. Upper eye shghtly 

 behind lower, entering dorsal profile of head, its diameter 3J to 3I in length of head : 

 a prominent tubercle or blunt spine at either end of the interorbital ridge, a smaller 

 tubercle in front of each eye, and others above and behind upper eye ; some bony 

 prominences above the operculum. Maxillary extending to below anterior part of 

 eye, length on ocular side 3f to 4, on blind side 3I to 3J in that of head ; lower jaw- 

 scarcely projecting, about 3 in head. Teeth in 3 rows on blind side of both jaws ; 

 a single row on ocular side of lower jaw. 8 or 9 gill-rakers on lower part of anterior 

 arch. 80 to 86 scales in lateral line. Posterior prolongation of supratemporal branch 

 of lateral line extending to below thirty-seventh to fiftieth rays of dorsal fin. Dorsal 

 70-75 ; origin a little below level of angle of mouth, at least g rays being on blind side 

 of head ; highest rays about f length of head. Anal 47-50 ; tip of first interhaemal 

 spine prominent. Pectoral of ocular side with g to 13 rays (5 to 10 branched), length 

 i§ to if in that of head. Pelvics with 4 to 7 (generally 6) rays. Caudal with 19 rays 

 (13 branched), rounded ; caudal peduncle i j to 15 times as deep as long. Intestine 

 of moderate length, not much coiled. Brownish, sometimes with indefinite darker 

 markings ; rays of dorsal and anal fins tipped with white ; distal part of caudal 

 dusky, narrowly margined with white. 



Type. — Not traced. 



Distribution. — Pacific coast of North America, from Alaska to the Santa Barbara 

 Islands. 



Specimens Examined : 



Pt. Reyes. Eigenmann. 



San Diego Bay. Amer. Mus. Kat. Hist. 



Monterey. U.S. Nat. Mus. 



The recent record (Schultz, Hart and Gunderson, ig32) of two e.xamples of this 

 species (37 and 207 mm.) from Prince William Sound and Wrangell, Alaska, extends 

 its known distribution very much farther northwards. It is possible that this may 

 prove to be the species described by Pallas as Pleuronectes quadrituberciilatus . 



2. PLEURONICHTHYS CORNUTUS (Temminck and Schlegel). 



Platissa cornuta, Temminck and Schlegel, 1846, in Siebold, F. Japon. (Pisces), p. 179, pi. xcii, fig. i ; 

 Bleeker, 1854, Verb. Batav. Gen., xxvi, Japan, p. 121. 



HeUroprosopon cornutus, Bleeker. 1862, Versl. Akad. Wet. Amsterdam, xiii, p. 429. 



Parophrys cornuta, Giinther, 1862, Cat. Fish., iv, p. 455 ; Giinther, 1880, Shore Fishes " Challenger," 

 p. 70 ; Otaki, 1897, Joum. Bur. Fish. Tokyo, p. 7, pl. viii, fig. 10. 



PUuronichihys cornutus, Steindachner, 1896, Ann. Natur. Hofmus. Wien, xi, p. 207 ; Rutter, 1897, 

 Proc, Acad. Nat. Sci. Philad., xlix, p. 88 ; Jordan and Starks, 1904, Bull. U.S. Com. Fish., 

 xxii, (1902), p. 623 ; Jordan and Starks, 1906, Proc. U.S. Nat. Mus., xxxi, p. 201 ; Starks and 

 Thompson, 1910, Proc. U.S. Nat. Mus., xxxviii, p. 279 ; Jordan, Tanaka and Snyder, 1913, 

 J. Coll. Sci. Tokyo, xxxiii (i), p. 325 ; Hubbs, 1915, Proc. U.S. Nat. Mus., xlviii,p. 475 ; Jordan 

 and Hubbs, 1925, Mem. Carnegie Mus., x, p. 29S ; Oshima, 1927, Japan J. Zool., Trans. Abstr., 

 i (5), P- 194 : Schmidt, 1931, Trans. Pac. Com. Acad. Sci. U.S.S.R., ii, p. 126 ; Schmidt, 1931, 

 C.R. Acad. Sci. Russ., p. 316. 



Depth of body 1} to twice in the length, length of head 4 J to 5. Upper eye 

 scarcely behind lower, entering dorsal profile of head, its diameter 3 to 4 in length 

 of head ; interorbital ridge of moderate height, narrow, compressed, with a more 

 or less prominent spine at either end, the anterior spine directed upwards, the 

 posterior backwards ; these spines sometimes obtuse or rounded ; a small prominence 

 in front of lower eye, a smaller one in front of upper eye, and usually one or two 

 very small ones on hinder margin of upper orbit ; no prominences above the 

 operculum. Maxillary extending to below anterior part of eye, length on ocular 

 side 3f to 4^, on blind side 3J to 4 in that of head ; lower jaw scarcely projecting. 



