324 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
Leonard P. Schultz, Guillermo Zuloaga,’ Roger Sherman, and William H. Phelps, 
Jr., May 12, 1942. 
The following collections, made by Dr. William Beebe, were lent 
to the author for study and report: 
Three specimens, 25 to 27 mm., Rio San Pablo, near Caripito, Venezuela, 
April 11, 1942. 
One specimen, 26 mm., from Caripito, Venezuela, 1942. 
Two specimens, male of 35 mm., female of 36 mm., from Caripito, Venezuela, 
1942, - 
GEPHYROCHARAX VENEZUELAE, new species 
FIGURE 44 
Holotype —U.S.N.M. No. 121369, a male specimen 32.5 mm. in 
standard length, collected in the Rio San Juan at the bridge south of 
Mene Grande, Motatdn system, by Leonard P. Schultz, March 20, 
1942. 
Paratypes.—The following collections were made by Leonard P. 
Schultz during 1942 in the Maracaibo Basin of Venezuela: 
U.S.N.M. No. 121861, 25 specimens, 23.5 to 37 mm., taken along with the 
holotype and bearing same data. 
U.S.N.M. No. 121867, 6 examples, 21 to 28 mm., taken in the Rio San Juan, 
12 km. south of Rosario, February 26. 
U.S.N.M. No. 121368, 107 examples, 19 to 32.5 mm., collected March 16 in the 
Rio Machango at the bridge south of Lagunillas. 
U.S.N.M. No. 121362, 11 specimens, 22 to 35 mm., taken February 21 in the 
Rio Palmar near Totuma, about 100 km. southwest of Maracaibo. 
U.S.N.M. No. 121359, a specimen, 24.5 mm., collected February 26 in the Rio 
Apoén about 35 km. south of Rosario, Maracaibo Basi. 
U.S.N.M. No. 121366, 134 examples, 21 to 28 mm., obtained from the Rio 
Negro below mouth of Rio Yasa, Maracaibo Basin, March 2. 
U.S.N.M. No. 121363, 11 specimens, 21 to 42 mm., collected March 25 in the 
Rio Motatan, 4 km. above Motatan. 
U.S.N.M. No. 121360, an example, 23.5 mm., collected March 12 near the 
mouth of Cafio de Sagua, 35 km. north of Sinamaica (water salty on incoming 
tide). 
U.S.N.M. No. 121365, 22 specimens, taken March 24 in the Rio Motatan, 
8 km. below Motatadn. 
U.S.N.M. No. 121364, 41 specimens, 19 to 32 mm., collected March 17 in the 
Rio Motatdn at the bridge 22 km. north of Motatdn. 
U.S.N.M. No. 121533, 3 specimens, 24.5 to 30 mm., from Rio San Pedro at 
bridge south of Mene Grande, March 20. 
Description.—Detailed measurements were made on the holotype 
and one paratype, these data, recorded in hundredths of the standard 
length, are given below, first for the holotype, then the paratype. 
Standard length in millimeters 32.5 and 32.5. 
Length of head 24.3 and 23.7; greatest depth 31.1 and 30.5; length 
of snout 7.08 and 7.08; diameter of eye 8.37 and 8.00; width of inter- 
orbital space 8.92 and 9.23; postorbital length of head 10.1 and 11.1; 
length from tip of snout to rear of maxillary 10.8 and 9.84; length of 
caudal peduncle from base of last anal ray to midbase of caudal fin 
