eigenmann: fresh water fishes. 285 



Steindachner, Zool. Jahrb. 1898, Suppl. IV, Zweites Heft, 281 (Pichi- 



Laguna, an arm of Lake Llanquihue at Puerto Montt) ; Delfin, Cata- 



logo Peces Chile, 58, 1901 ; Evermann & Kendall, Proc. U. S. Nat. 



Mus. XXXI, 1901, 100 (Rio Negro; Rio Limay ; Lake Nahuel 



Huapi ; Lake Traful). 

 Perca IcEvis Jenyns, Zool. Beagle, Fishes I, pi. i, 1842 (Rio Santa Cruz). 

 Percichthys Icevis Giinther, Cat. Fish. Brit. Mus. I, 61 ; Kner, Novara 



Fische II, 1865 (Valparaiso) ; Vaillant, Miss. Scient. Cap Horn, 



Poiss. C. 31, 1888 (Santa Cruz); Jordan & Eigenmann, Bull. U. S. 



Fish Com. VIII, 428, 1890; Perugia, Ann. del Mus. Civ. Stor. Nat. 



Genova, Ser. ia, X (XXX) 609, 1891 (Tierra del Fuego ; Laguna 



del Rio Negro; Rio Santa Cruz). 

 Pej'cichtJiys chilensis Girard, Proc. Acad. Nat. Sci. Phila., VII, 1854, 197; 



id., U. S. Naval and Astron. Exped. 231, pi. xxix, figs. 1-4, 1855 



(Rio de Maypu, near Santiago, Chili) ; Philippi, Mon. Berl. Acad. 



1866, 708. 

 Habitat: Rio Negro and Valparaiso and southward. Four speci- 

 mens were taken by Hatcher in the Rio Santa Cruz ; the locality of seven 

 others is not indicated. 



The following description is based on these specimens and on 12 speci- 

 mens from Santiago and Curico, Chili. 



Body elongate, deepest below first dorsal spine ; maxillary reaching to 

 below pupil, or little beyond anterior border of eye, 2f to 3 in head. Max- 

 illary and mandibular teeth in similar bands, broadest in front and taper- 

 ing backwards ; teeth on vomer in a triangular patch ; palatine bands of 

 teeth much longer than those on vomer, separated from the latter, and 

 placed almost at right angles to them. Head covered with scales forward 

 to the anterior nostril, a short linear naked area, always present, at or 

 near the base of the supraoccipital keel. Scales on cheeks in t\velve to 

 fifteen irregular series ; scales on opercle as large as those on body, in about 

 six series. Eye large, if to if in snout, 5 to 5f in head, i to i}4 in in- 

 terorbital space. Mouth terminal or subterminal, the lower jaw slightly 

 included. Profile straight or very slightly concave from tip of occipital 

 process to premaxillary process, thence abruptly decurved. 



Preorbital with strong teeth directed downward and backward, strong- 

 est in young examples, largest near posterior angle of maxillary ; entire 

 vertical margin of preopercle with fine teeth, largest below ; lower mar- 



