334 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
pinkish anteriorly; pectorals pale orange-yellow; lateral band plum- 
beous, ending in a black spot at midbase of caudal fin; humeral bar 
black; sides silvery. 
Remarks.—This new species of Creagrutus differs from others re- 
ferred to this genus in having a black spot at midcaudal fin base, as 
well as in having the dorsal fin over or a little in front of a vertical 
through the pelvic insertions. The lobes of the caudal fin are yellowish 
instead of red as in Creagrutus beni of the Maracaibo Basin. 
Named /ildebrandi in honor of Dr. Samuel F. Hildebrand, of the 
U.S. Fish and Wildlife Service, who has made extensive contributions 
on the fish fauna of Panama. 
CREAGRUTUS PHASMA Myers 
Creagrutus phasma Myurs, Bull. Mus. Comp. Zool., vol. 68, No. 8, p. 117, 1927 
(mouth of Curamuni, Rio Cassiquiare, Venezuela).—E1GENMANN and 
Myers, Mem. Mus. Comp. Zool., vol. 43, pt. 5, p. 548, 1929 (Rfo Cassi- 
quiare, Venezuela). 
CREAGRUTUS BOLIVARI, new species 
Figure 49 
Holotype —U.S.N.M. No. 121497, a specimen 51.5 mm. in standard 
length, collected by L. P. Schultz, G. Zuloaga, William Phelps, Jr., 
Roger Sherman, May 12, 1942, in the Rio Gudrico and tributaries be- 
tween San Sebastidn and San Casimiro, Estado de Aragua. 
Paratypes—U.S.N.M. No. 121498, 90 specimens, 29 to 48 mm., 
collected along with the holotype and bearing same data. 
This species occurred in the quieter eddies of the rapidly flowing 
waters. 
Description.—This description is based on the holotype and para- 
types listed above. Measurements were made of the former and one 
of the latter, and these data, recorded in hundredths of the standard 
length, are presented in table 22. Additional counts are recorded in 
table 23. 
TABLE 23.—Counts made on species of Creagrutus from Venezuela 
Number of fin rays Number of scales 
Be- 
Rows 
: Above |} low 
Dor- ‘ crossing In front 
Species sal Anal Pectoral Pelvic lateral jatere yale of dorsal © 
line line 
bE NCEE POU EDEL NOD PERN PE NL sb Patines lf abu ab poy | a 
8 | 9110/11/13] 10] 111213] 14] 6 | 7 | 8 |99|86/87)88) 4| 5/6) 3) 4) 9 [loti )t2 
hildebrandi_____-- PAs Se ALN | eine d an | ig | ewe | ea 1} 5 4) 1} 1}__} 3] 1] 1} 5)--} 3/10} 1)-- 
bolivari__.._.-_---- Gh a2 OLS Hing | ae a | ae 1; 2) 5 1 4 2) Lj_-} 2)_-_} 3}-_)16)__|_- 
Deri eee ONIN to NGA aa TS OL Gl Gl eS) ee eee eee 9} 1] 2} 2) 9} 3/_-|15}__| 9) 6 2/31] 2 
