254 FISHES OF WESTERN SOUTH AMERICA 
Rio Ambyiacu to the Pichis 
16021, 2, 165 and 167 mm., Yarinacocha, Allen, August, 1920. 
16022, , Orellana, Rio Ucayali, Allen, August, 1920. 
16027, , , Rio Pachitea, Allen, July, 1920. 
16028, , Pto. Bermudez, Rio Pichis, Allen, July, 1920. 
16029, 16030, — , , Mouth Rio Pacaya, Allen, August, 1920. 
315. BRYCON ERYTHROPTERUM (Cope) 
Megalobrycon erythropterum Cope, 1871 (1872), Proce. Acad. Nat. Sci. Phila., XXIII, 263, Rio 
Ambyiacu. 
Brycon erythropterus Eigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 430. 
Brycon erythropterum Fowler, 1939 (1940), Proc. Acad. Nat. Sci. Phila., NCI, 263, one, 145, Conta- 
mana. 
Rio Ambyiacu to the Pachitea 
16023, 3, 165-212 mm., Rio Ucayali, Orellana, Allen, August, 1920. 
16025, 2, 188 and 192 mm., Lago Cashiboya, Allen, August, 1920. 
16026, 1, 220 mm., Rio Pachitea, Allen, July, 1920. 
17844, 1, 210 mm., Iquitos, Allen, September, 1920. 
170381, 17082, — , , Iquitos, Allen, September, 1920. 
Rumi-uma (red-tail) is a colloquial name of this species. 
315a. BRYCON SP. 
Brycon siebenthali iquitensis Nakashima, 1941, Bol. Mus. Hist. Nat. Lima, V, 69. 
316. BRYCON STOLZMANNI Steindachner 
Brycon stolzmanni Steindachner, 1879, Denksch. KK. Akad. Wiss. Wien, XLI, 22, pl. i, fig. 6; 
Kigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 431; 
Pearson, 1937a, Proc. Cal. Acad. Sei., (4), X XIII, 90, Paipay, Tingo de Pauca, Pusoc, upper 
Maranon. 
Intereordilleran Maranon 
The type specimens of Steindachner were taken on a tributary of the upper 
Maranon at Chota, a point near the Pearson localities. 
Subfamily: IGUANODECTINAE 
Gregory and Conrad’s paper (1938, p. 335) would encourage the view that the 
Iguanodectinae belong nearer to this point than to the Tetragonopterinae. 
Genus 120: IGUANODECTES Cope 
Iguanodectes Cope, 1871 (1872), Proc. Acad. Nat. Sci. Phila., 260; 
Jigenmann, 1910, Rept. Princeton Univ. Exped. Patagonia, III, 430; 
Eigenmann, 1912, Mem. Carnegie Mus., V, 314; 
Eigenmann and Myers, 1929, Mem. Mus. Comp. Zool., XLII, v, 494. 
