334 



PROCEEDINGS OF THE ACADEMY OF 



[June, 



Three examples from the Ambyiacu in the Hauxwell Coll. Head 

 3f to 3|; depth 3^ to 4; D. ii, 9; A. in or iv, 16, i to 18, i; scales 32 

 to 34 in lateral line (squamation mostly injured) to base of caudal, and 

 2 more on latter; total length 2 to 2||- inches. 



Aphyocharax filigerus Cope. Fig. 23. 



Proc. Amer. Philos. Soc. Phila., XI, 1869-70 (August 19, 1870), p. 564. 

 Nos. 8,059 (type) and 8,073, A. N. S. P., cotypes. Pebas, Eastern Equador. 

 John Hauxwell. 



Interorbital space 3 in head. Edges of trunk apparently more or 

 less rounded. Rami of mandible hardly elevated inside mouth. 

 Tongue a little long, narrow and free in front. Interorbital space 

 elevated convexly. Gill-openings carried forward about first f of 



Fig. 23. — Aphyocharax filigerus Cope. 



orbit. Rakers 7 + 10, lanceolate, and apparently longer than longest 

 filaments or a little longer than half of orbit. Isthmus narrow. Color 

 in alcohol faded dull brownish, and fins pale, though median caudal 

 rays a little paler than rest of fin. Iris brownish. Length 2^ inches 

 (caudal damaged). Type. Taken from the stomach of a siluroid. 



Diapoma speculiferum Cope. 



Amer. Nat., XXVIII, 1894, p. 67. No. 21,580, A. N. S. P., type. Upper 

 waters of the Jacuhy River in Brazihan State of Rio Grande do Sul. 



H. H. Smith. Cope. Proc. Amer. PWlos. Soc. Pliila., XXXIII, 1894 



(January 5), p. 92, PI. 5, fig. 4, from t^^pe. 



Edge of back rounded. Upper and lower edges of caudal peduncle 

 trenchant. Chest with a median rounded ridge. Postventral region 



