134 DISCOVERY REPORTS 



Depth of body about z\ in the length, length of head 3§ to nearly 4. Diameter of 

 eye 5 to 5 § in length of head, greater than interorbital width. 11 gill-rakers on lower 

 part of anterior arch. Scales ctenoid on ocular side, cycloid on blind side; 103 to 107 

 in lateral line. Dorsal 76-85 ; anal 60-69. 



Hab. Coasts of southern Brazil, Uruguay and Argentina, southwards to northern 

 Patagonia. 



No specimens of this species were obtained by the expedition, but the British 

 Museum has recently received two fine examples (330, 380 mm.) from Buenos Aires, 

 through the courtesy of Messrs A. Gardella Ltd. 



In my monograph I erroneously united this species, of which I had seen no specimens, 

 with Ranzani's P. brasiliensis [= P. vorax (Giinther)], but, as Ginsburg has pointed 

 out, it may be readily distinguished by the more numerous scales, which are ctenoid 

 on the ocular side. The same author regards P. bicyclophorus, Ribeiro, as probably 

 synonymous with P. patagonicns. By softening the dried skin recorded by Jenyns as 

 Platessa orbignyana I have been able to count the gill-rakers, and find about 10 of these 

 on the lower part of the anterior arch. This specimen cannot, therefore, belong to the 

 species P. orbignyana as defined in my monograph, and should most probably be 

 placed here. The large stuffed specimen from Port Famine, identified by Giinther as 

 P. dentatus (Linnaeus), appears to have finely ciliated scales on the ocular side of the 

 body, and there are about 100 in the lateral line. It would, therefore, seem to be 

 referable to this species rather than to P. brasiliensis (Ranzani), although in certain 

 respects it resembles P. hilgendorfi, Steindachner, and P. schmitti, Ginsburg. 



Paralichthys isosceles, Jordan. 



1891, Proc. U.S. Nat. Mm., xm, p. 330; Norman, 1934, Syst. Monogr. Flatfishes, 1, p. 80. 

 Psendorhombus isosceles, Ginsburg, 1936, J. Wash. Acad. Sci., xxvi, p. 131. 



St. WS762. 16. x. 31. 43 50' S, 65 01' 51" W. Commercial otter trawl, 67-65 m. : 2 specimens, 

 140, 220 mm. 



St. WS 763. 16. x. 31. 44° 14' S, 63 28' W. Commercial otter trawl, 87-82 m.: 3 specimens, 

 215-305 mm. 



St. WS 788. 13. xii. 31. 45 05' S, 65 : 00' W. Commercial otter trawl, 82-88 m.: 1 specimen, 

 205 mm. 



St. WS 852. 21. iii. 32. 44 12' 30" S, 64 13' W. Small beam trawl, 86-88 m.: 2 specimens, 

 215, 285 mm. 



Depth of body 2 to z\ in the length, length of head 3! to 4. Upper profile of head 

 generally a little notched in front of upper eye. Snout about as long as eye, diameter of 

 which is 3§ to 4^ in length of head; eyes separated by a narrow ridge. Maxillary 

 extending to below middle or posterior part of eye, length about 2 in head ; lower jaw 

 not projecting. No distinct canine teeth. 8 or 9 gill-rakers on lower part of anterior 

 arch. Scales ctenoid on both sides of body; 73 to 79 in lateral line; 1 no supplementary 



1 I am greatly indebted to Mr I. Ginsburg for the information that Jordan was in error in his count of 

 the scales in the types of P. isosceles, and that the number should be 74 to 78. Mr Ginsburg has also been 

 kind enough to send me a galley proof of his paper dealing with this and other related Flatfishes, for which 

 courtesy I take this opportunity of offering my sincere thanks. 



