THE AMERICAN TETRAGONOPTERINAE. 157 
row tricuspid teeth. Maxillary with two 5-pointed teeth, the points nearly 
equal in length. Dentary with a graduated series of four large, 4- or 5-pointed 
teeth and two quite small tricuspid ones. 
Gill-rakers 6 + 10. 
Anal sheath short. Lateral line with pores on 4 to 7 scales. 
Origin of the dorsal almost the length of eye nearer the caudal than to 
the snout, longest ray 4 in the length. Origin of the anal on the vertical 
from the second scale behind the dorsal. Anal faleate, the longest ray equal 
to the length of the base; origin of ventrals on the vertical from the first scale 
in front of the dorsal, reaching the anal. Pectorals not reaching the ventrals. 
Dorsal and anal very slightly dusky. No distinct humeral spot, a few 
seattering chromatophores forming a horizontally elongate bar extending 
from the head to vertical from the base of the ventrals, where the narrow black 
line-like lateral stripe begins. The caudal spot forms a jet-black band across 
the end of the tail, continued forward to a blunt median point upon the lateral 
stripe, and backwards along the edge of each caudal lobe and along the middle 
caudal rays, but not to their tips. Scales of the back outlined with pigment. 
15. HEMIGRAMMUS OCELLIFER (Steindachner). 
Plate 19, fig. 3; Plate 21, fig. 2. 
Tetragonopterus ocellifer STEINDACHNER, Flussf. Siidamer., 1882, 4, p. 32, pl. 7, fig. 5, (Villa Bella; 
Cudajas); EtGENMANN & EIGENMANN, Proc. U.S. N. M., 1891, 14, p. 54; Unrey, Ann. N. Y. acad. 
sci., 1895, 8, p. 286 (Amazon and Solimoes Basin). 
Holopristis ocellifer EIGENMANN, Smith. misc. coll. quart., 1903, 45, p. 145; Eraenmann & OcLp, Proc. 
U.S. N. M., 1907, 33, p. 11. 
Hemigrammus ocellifer Exxis, Ann. Carnegie mus., 1911, 8, p. 162 (Braganca); Eracenmann, Mem. 
Carnegie mus., 1912, 5, p. 335, pl. 48, fig. 4; Fowxmr, Proc. Acad. nat. sci. Phil., 1913, p. 544, fig. 
13 (Rio Madeira). 
Hasrrat.— Amazon; British Guiana. 
Specimens examined. 
Number of Length 
Catalogue number specimens inmm. Locality Collector 
Part of 20842 33 28-44 Obidos Col. Bentos 
21017 1 38 Curupira Maj. Cotinho 
20774 16 37-28 Tabatinga Bourget 
20969 5 31-36 Cudajas Thayer & Bourget 
1455 C., 11910 I. 109 26-37 Gluck Island Eigenmann 
1456 C., 11911 I. 3 small Konawaruk Eigenmann 
MS aG. Aoi e 4 28-29 Malali Shideler 
3046 C. 11 31-40 Braganca Haseman 
