NO. 1482. ARGENTINA FISHES— EVERMANN AND KENDALL. 107 



Family PLEURONECTIDyE. 



50. PARALICHTHYS PATAGONICUS Jordan and Goss. 



Paralichtliys patagonicus Jordan and Goss, Rept. U. H. Fish Coniiu. , XIV, 1886 

 (1889), p. 245, east coast of Patagonia. — Berg, Anal. Mus. Nac. Buenos Aires, 

 IV (2d ser., I), 1895, p. 77 (Montevideo). 



Regarding- this species, Berg remarks that it is much less abundant 

 than P. hrasiliensis and is rather smaller, and that it is distinguished 

 from the latter principally by the shorter gillrakers which are stouter 

 and wider apart, 3 + 11 instead of 4+ 15; by the rather smaller max- 

 illary teeth; eyes closer together; arch of lateral line lower; the salient 

 point of the caudal fin; the body bespattered with small gra}^ spots, 

 and the pectoral bearing black transverse bands. 



We have one specimen from the market at Buenos Aires. The total 

 length is 12 inches; length without caudal 10.5 inches; depth 2.31 in 

 length without caudal; head 3.8; eye 5.63 in head; snout about 1.78; 

 maxillary 2.16; mandible 1.21; lengthwise series of scales about 100; 

 dorsal, anal, and caudal scaly nearly throughout; D. 80, beginning 

 opposite front of orbit; A. 65 or 66; teeth sharp, equalh' developed 

 on both sides of each jaw, canine-like in front and smaller posteriorly; 

 gillrakers 3 + 11. 



51. ACHIRUS JENYNSI (Gunther). 



Achirus Uneatus, Jenyns, Zool. Voy. Beagle, Pt. 4, Fish, 1842, p. 139 (Rio de la 



Plata). — Valenciennes in D'Orbigny's Voyage, 1847, p. 10, pi. xvi, fig. 2 



(Cayenne); not of Linnaeus. 

 Solea jenynsi GtJNTHER, Cat., IV, 1862, p. 476, after Jenyns. — Perugia, Anii. Mus. 



Civ. Stor. Nat. Geneva, 2d ser., X (XXX), 1890-91, p. 628 (Belgrano e Rio 



de la Plata). 

 f Achirus lorentzii Weyenbergh, Act. Acad. Nac. Cien. Cordova, III, 1877, p. 13, 



pi. I. 



Jordan and Goss include Achirus Uneatus of D'Orbigny's Vo3'age, 

 in the synonymy of Achirus Uneatus Linnaeus, which has a pectoral 

 tin. A. Uneatus of D'Orbigny has no pectoral tin and should there- 

 fore be referred to A. jenynsi. Perugia has thus disposed of it. 

 Perugia also states that, excepting some trifling di&evQnce ., Achirus 

 lorentzii Weyenbergh could be referred to A. jenynsi, and he doubt- 

 fully places it in the synonymy of that species. 



Two specimens in the present collection agree essentially with the 

 description of A. jenynsi as given by Jordan and Goss, Total length, 

 respectively, about 7.25 and 6.75 inches. Head 3.63 and 3.37 in 

 length without caudal; depth 1.61 and 1.19; snout 3.72 and 3.68 in 

 head; interorbital 6.83 and 7.77; D. 58 and 61; A. 43 and 12; scales 

 85 or more. 



