298 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 95 
more thorough study could be made of this problem. However, since 
the population of Cyrtocharaz in the Maracaibo Basin differs statis- 
tically from those in adjoining basins, it is thought best to give it 
the rank of a new subspecies, which is described below. In that way 
it is possible to emphasize the different races.. 
CYRTOCHARAX MAGDALENAE VENEZUELAE, new subspecies 
DIENTON 
FIGURE 37 
Holotype.—U.S.N.M. No. 121390, a specimen 203 mm. in standard 
length, collected by Leonard P. Schultz, March 2, 1942, in the Rio 
Negro below mouth of Rio Yasa, Maracaibo Basin. 
Paratypes—All the paratypes were collected by Leonard P. 
Schultz during 1942 in the Maracaibo Basin of Venezuela: 
by 444 
BPS 
Ficure 37.—Cyrtocharax magdalenae venezuelae, new subspecies: Holotype, U.S.N.M. 
No. 121390, 203 mm. in standard length. 
U.S.N.M. No. 121398, 7 specimens, 165 to 293 mm. in standard length, col- 
lected along with the holotype and bearing same data. 
U.S.N.M. No. 121394, 4 examples, 162 to 202 mm., collected March 6 in the 
Rio Palmar at bridge, 70 km. southwest of Maracaibo. 
U.S.N.M. No. 121395, 4 examples, 161 to 199 mm., taken February 26 in the 
Rio Apén about 35 km. south of Rosaria, Maracaibo Basin. 
U.S.N.M. No. 121396, 2 specimens, 205 and 206 mm., taken March 17 in the 
Rio Motatdn at bridge, 22 km. north of Motatdn. 
U.S.N.M. No. 121391, 2 specimens, 240 and 248 mm. obtained March 11 in a 
cafio % km. west of Sinamaica. 
U.S.N.M. No. 121892, a specimen 208 mm., collected February 21 in the Rfo 
Palmar near Totuma, about 100 km. southwest of Maracaibo. 
U.S.N.M. No. 121898, 5 specimens, 197 to 250 mm., collected February 24 
in the Rio Socuy, 3 km. above its mouth, Maracaibo Basin. 
U.S.N.M. No. 121397, 2 examples, 225 and 238 mm., taken March 16 in the 
Rio Machango at bridge south of Lagunillas, Maracaibo Basin. | 
— oe 
