ANNOTATED LIST OF THE SPECIES 371 
Garman reports a 23-inch specimen with well-developed eggs; some of mine 
had developed gonads at 70 mm., (22 inches). 
15238 (part), 2, 85 and 92 mm., Chinchaycocha, Allen, September, 1918. 
Two poor specimens of quite different nature from any other, at least near 
their own size, having somewhat the general form of mature O. agassizii, but much 
less robust, and differing in various respects; close to elegans in a number of ways, 
and since they were taken in contiguous territory to that of elegans, and are diffi- 
cult to separate without better material, I place them here not too confidently. 
Similar to elegans in the proportions of the head regions, mouth, teeth, eye, 
size of head, shoulder scalation, finray counts. Rather less slender and less circular 
in cross section, compressed; caudal peduncle measurably deeper. 
Scales thin, flat, not much striated, deciduous, regular except upon the back; 
shoulder scales somewhat thickened, polished; in one specimen a dense group of 
scales in the infraorbital area; cheek well filled with close scales extending before 
eye; opercle similar except anterior horn. 
Fins moderately long. 
Yellowish-white below, sides yellow-brown, nearly uniform; fins hyaline with- 
out markings. 
484. ORESTIAS AGASSIzIT Valenciennes 
Plate XX, figs. 3-8 
Orestias agassizii Cuvier and Valenciennes, 1846, Hist. Nat. Poiss., X VIII, 238, Corocoro, Bolivia; 
Eigenmann and Eigenmann, 1891, Proc. U.S. Nat. Mus., XIV, 65; 
Garman, 1895, Mem. Mus. Comp. Zool., XIX, 150; 
Steindachner, 1902, Denksch. Kix. Akad. Wiss. Wien, LX.XII, 58, pl. iii, fig. 3; 
Pellegrin, 1904, Bull. Soc. Zool. France, XXTX, 93; 
Starks, 1906, Proc. U. 8S. Nat. Mus., XXX, 780; 
Pellegrin, 1906 (1907), Poiss. Lacs Hauts Plat. Amér. Sud, 19, pl. xiv, figs. A-D; 
Evermann and Radcliffe, 1909, Proc. Biol. Soc. Wash., XXII, 165; 
Evermann and Radcliffe, 1917, Bull. U. 8S. Nat. Mus., no. 95, 40; 
Rendahl, 1937, Ark. Zool. Stockholm, X XIX, A. 11; 
Eigenmann, 1927, Mem. Nat. Acad. Sci., XXII, 52, pl. xiii, fig. 8. 
Orestias agassizi Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 461. 
Orestias ortonia Cope, 1875, Jour. Acad. Nat. Sci. Phila., 186. 
Orestias frontosus Cope, 1875, Jour. Acad. Nat. Sei. Phila., 187. 
Orestias owenit Garman (part), 1895, Mem. Mus. Comp. Zool., XIX, 152. 
Orestias albus Garman (part), 1895, Mem. Mus. Comp. Zool., XTX, 153. 
Orestias tirapatae Boulenger, 1902, Ann. Mag. Nat. Hist., (7), X, 153; 
Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 461. 
Higher Andes of southern Peru to northern Chile 
15239 (dupl. number), 22, 43-84 mm., Rio Mauri, Calacoto, Bolivia, Allen, February, 1919, (type 
locality Pellegrin’s var. typica). 
15249, many, Rio Mauri, Desaguadero, Allen, February, 1919. 
15250, many, 50-85 mm., Rio Mulato, Bolivia, Allen, February, 1919. 
15347, many, Lago Ascotan, Chile, Allen, February, 1919. 
16060, many, same data. 
16067, many very small, Lago Huaypo, Eigenmann, November, 1918. 
