104 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXI. 



We have 2 specimens 18.5 and 19.5 inches long, respectively, pre- 

 senting the following proportional measurements: Head 3.30 in 

 length without caudal; eye 6.20 and 5.90 in head and 1.20 and 1.01 in. 

 interorbital; snout 1.27 and 1.33; maxillary 2.33 and 2.32; mandible 

 1.85 and 1.88; scales 6-57-5 and 6-62-7; D. VIII-I, 20, and VIII-I, 

 18; A. I, 8 and I, 9. 



45. MICROPOGON UNDULATUS (Linnaeus). 

 CORVINA; CUR VINA; CTTRBINA; RONCADERA. 



Perca undulaia Linn.eus, Syst. Nat., 12th ed., 1766, p. 483. 



Micropogon undulatus, Gijnther, Challenger Rept., Zool., I, 1880, p. 13 (Monte- 

 video); Ann. Mag. Nat. Hist., 5th ser., 3, July, 1880, p. 9 (Rio de la Plata).— 

 Perugia, Ann. Mus. Civ. Stor. Nat. Genova, 2d ser., X (XXX), 1890-91, 

 p. 613 (Montevideo). — Berg, Anal. Mus. Nac. Buenos Aires, IV (2d ser., I), 

 1895, p. 54 (BahiaBlanca; Mar del Plata; Montevideo; Maldonado). 



Micropogon furnieri, Berg, Anal. Mus. Nac. Buenos Aires, IV (2d ser., I), 1895, 

 p. 55 (Embocodura del Rio de la Plata; Montevideo). 



According to Berg, this species is very common on the coast from 

 Parrelo to Maldonado, and the number caught in the Urugua3^an region 

 reaches 3 or 1 millions annually. 



Berg, on the authority of Giinther, records also Micropogon f%ir- 

 nieri from the mouth of Eio de la Plata. 



Giinther did not consider the South American Micropogon as dis- 

 tinct from the northern M. undulatus. 



The stated distinctive characters of M. furnieri in Jordan and Eigen- 

 mann's Review of the Scisenidse, from an examination of our specimens 

 and comparison with northern M. undulatus^ and M. furnieri from 

 the West Indies, do not seem to obtain. The point regarding the 

 greater regularity of the oblique color-bars perhaps holds good, but 

 these markings are fuU}^ as distinct as in M. undidatus. 



The accompan3dng table shows the proportional measurements of 

 our 9 specimens. 



Proportional measurement of Micropogon undulatus. 



