412 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 50. 



Table of comparative measurements of Paralichthys adspersus and P. brasiliensis — Con. 



I Measurements in hundredths of lengths to liase of caudal. 

 18. CITKARICHTHYS MICROSTOMUS Gill. 



Citharichthysmicrostomus Gill, Proc. Acad. Nat. Sci. Phila., 1864, p. 223. Beese- 

 ley's Point, Now Jersey. 



Numerous specimens, not exceeding 135 mm. in total length, from 

 stations 2764, 2765, and 2766, in 10 J to lU fathoms, off Punta Sur, 

 near the Rio de la Plata. These agree with the description given by 

 Gill of a specimen from Beeseley's Point, New Jersey, United States, 

 and the description given by Jordan and Goss.^ In the Proceedings 

 of the United States National Museum, volume 7, 1884, page 540, 

 Dresel gives a table of measurements in hundredths of the body length 

 of a specimen (Cat. No. 36081, U.S.N.M.) from Long Island, New 

 York, with which our specimens agree very closely. Although these 

 have not actually been compared with northern specimens, there does 

 not seem to be much doubt of the identification. It is a new record 

 for South America. The measurements given below in parentheses 

 give hundredths of body length to base of caudal in six specimens. 



Head 4 J (0.22 to 0.24) in length of base of caudal; depth 2\ (0.44 

 to 0.47); eye 31 in head (0.06 to 0.065); maxillary 4 (0.055 to 0.06); 

 mandible 2| (0.08 to 0.09) ; length of pectoral of eyed side 3^ in body 

 length to base of caudal (0.30), of blind side 8^; dorsal rays 75 to 79; 

 anal 57 to 64; scales in lateral line 43 to 45, in transverse series 

 il^'il; giU rakers 3 + 7; vertebrae 9 + 25 = 34. 



Interorbital ridge very narrow and sharp; maxiUary short, not 

 reacliing pupil; teeth of eyed side in anterior half of jaws only, in a 

 single series in both jaws; those of blind side close-set, small; cirri on 

 subopercle of blind side long, not very numerous; pectoral, with the 

 upper ray filiform and much elongated on the eyed side, longer than 

 head (but frequently broken); no spine on snout; lower eye very 

 slightly in advance of upper; scales cycloid, seven vertical rows 

 present on cheek on bhnd side, those on head on eyed side smaller 



» A review of the Flounders and Soles (Pleuronectidae) of America and Europe, Report of the Commis- 

 sioner of Fish and Fisheries for 18SG, (ISSO) p. 277. 



