BOTHIDAE 135 



scales. 1 Dorsal 79-87; origin immediately behind posterior nostril of blind side and 

 in front of eye. Anal 58-69. Pectoral of ocular side with 11 rays, length ii to if in 

 that of head. Caudal double-truncate ; caudal peduncle more than twice as deep as long. 

 Brownish ; generally more or less mottled or spotted with darker ; generally an indistinct 

 dark spot above the curve of the lateral line and sometimes another behind the pectoral 

 fin ; three large round dark ocelli forming a triangle, a pair above and below the lateral 



Fig. 75. Paralichthys isosceles, x J. 



line and near edges of body, the third on lateral line just before end of dorsal ; fins all 

 more or less speckled or mottled with darker ; pelvic of ocular side dusky, with one to 

 three small black spots. 



Hob. Northern Patagonia. 



The types of this species were 125-280 mm. in total length. It is closely related to 

 P. triocellatus, Ribeiro, from which it may be distinguished by the smaller scales, which 

 are ctenoid on both sides of the body, and by the somewhat deeper body. 



Xystreurys rasile (Jordan) . ' ' Lenguado. 



Verecundum rasile, Jordan, 1891, Proc. U.S. Nat. Mus., xm, p. 330. 

 Hippoglossina notata, Berg, 1895, Anal. Mus. Nac. B. Aires, iv, p. 75. 

 Xystreurys notatus, Ribeiro, 1904, Lavoura [Bol. Soc. nac. Agricult.], 4-7 (1903), p. 192; Ribeiro, 



1915, Arch. Mus. Nac. Rio Janeiro, xvn, Heterosomata, p. 11. 

 Xystreurys brasiliensis, Regan, 1914, Ann. Mag. Nat. Hist. (8) xm, p. 17; Regan, 1914, Rep. 



Brit. Antarct. (' Terra Nova') Exped. 1910, Zool., 1, p. 23, pi. x, fig. 1. 

 Xystreurys rasile, Norman, 1934, Syst. Monogr. Flatfishes, 1, p. 121, fig. 77. 

 St. WS 762. 16. x. 31. 43 50' S, 65 05' 06" W. Commercial otter trawl, 67-65 m.: 1 specimen, 

 260 mm. 



St. WS 771. 29. x. 31. 42 41' 45" S, 6o° 31' W. Commercial otter trawl, 90 m.: 2 specimens, 



233, 235 mm. 



St. WS 852. 2i.iii. 32. 44° 12' 30" S, 64 13' W. Small beam trawl, 86-88 m.: 1 specimen, 



200 mm. 



Depth of body z\ to 2§ in the length, length of head 4 to \\. Snout rather shorter 

 than eye, diameter of which is z% (young) to 4 in length of head. Maxillary extending 



1 The absence of supplementary scales leads Mr Ginsburg to place this species in the genus Pseudorkombus 

 (as defined by him), but I am not yet convinced of the value of this character in the definition of genera. 



