& 
346 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
tip, or an equal distance between last anal ray and pupil; caudal fin 
forked; the first branched ray of all fins longest; distal margin of anal 
fin a little concave, that of dorsal, pelvics and pectorals a little convex; 
pectorals not quite reaching to pelvic insertion and pelvics not quite 
to anal origin; intestine with one main loop and about 6 pyloric caeca; 
basal part of caudal fin scaled, the scales extending out on the lobes 
a little over one-third the distance to tips of each lobe; no pouch on 
caudal fin. 
Coloration.—In alcohol the lateral band is blackish, more intense 
posteriorly but not ending in a distinct caudal spot; the black pigment 
continues a short distance out on the middle caudal fin rays but fades 
out before reaching their tips; the dark humeral spot is vertically 
elongate, with pale areas before and behind it; peritoneum black. On 
some specimens a, more or less obscure pale streak occurs above the 
blackish lateral band; midline of back with a dark streak. 
Remarks.—This new subspecies differs from the other subspecies of 
deuterodonoides as indicated in the key. 
The largest females have in their body cavities large eggs, nearly 
mature. These eggs are not numerous, only a few dozen im each 
specimen. 
Named euryodous in reference to the broad teeth on the maxillary. 
BRYCONAMERICUS MERIDAE (Eigenmann) 
Figure 52 
Knodus meridae E1GENMANN, Ann. Mag. Nat. Hist., ser. 8, vol. 7, p. 216, 1911 
(Mérida, Venezuela); Mem. Mus. Comp. Zool., vol. 48, pt. 2, p. 116, 1918 
(Mérida, Venezuela).—E1GhNMANN and Mysrs, Mem. Mus. Comp. Zool., 
vol. 48, pt. 5, p. 526, 1929. 
The following specimens were collected by Leonard P. Schultz 
during 1942 in the Maracaibo Basin of Venezuela: 
U.S.N.M. No. 121469, 206 specimens, 15 to 43 mm., in standard length, collected 
in the Rio Motatdn, 4 km. above Motatan, March 25. 
U.S.N.M. No. 121474, 66 examples, 14.5 to 34.5 mm., from the Rfo Motatadn, 
8 km. below Motatdn, March 24. 
U.S.N.M. No. 121471, 20 examples, 31.5 to 42.5 mm., Rio San Pedro at bridge, 
south of Mene Grande, Motatdn system, March 20. 
U.S.N.M. No. 121470, 22 specimens, 15 to 41 mm., Rio Motatdn at bridge, 22 
km. north of Motatdn, March 17. 
U.S.N.M. No. 121476, 2 specimens, 27 and 36 mm., Rio Tachira, 7 km. north of 
San Antonio, Catatumbo system, April 1. 
U.S.N.M. No. 121475, 73 examples, 21 to 37 mm., Rio Jimelles, 12 km. east of 
Motatan, tributary Rio Motatan, March 24. 
U.S.N.M. No. 121473, 51 examples, 17 to 37.5 mm., Rio San Juan near bridge, 
south of Mene Grande, Motatdn system, March 17-20. 
U.S.N.M. No. 121472, 3 specimens, 26.5 to 37 mm., from Rio Gonzales, tribu- 
tary to Rio Chama, at La Gonzales, Estado de Mérida, March 29. 
