Dec. 28, 1916. FisHes or PANAMA— MEEK AND HILDEBRAND. 301 
to be limited to the vicinity of the Canal Zone. In the Rio Tuyra 
Basin it is replaced by P. festa. 
Habitat: Both slopes of Panama, except in the Rio Tuyra Basin. 
45. Piabucina festz Boulenger. 
Piabucina feste Boulenger, Boll. Mus. Torino, No. 346, XIV, 1899, 
1 (Laguna della Pita, Darien, Panama); Jordan & Evermann, Bull. 
U. S. Nat. Mus., XLVII, 1900, 3145; Regan, Biol. Cent. Amer., 
Pisces, 1907, 168; Eigenmann, Repts. Princeton Univ. Exp. Pata- 
gonia, III, Pt. IV, 1910, 4309. 
Head 3.7 to 4.25; depth 3.6 to 3.95; D. 80r9; A. 100r 11; scales 27 or 28. 
Body elongate, rather robust, the ventral outline a little more 
strongly convex than the dorsal, the dorsal region not elevated; caudal 
peduncle rather deep, compressed, its depth 1.75 to 2 in head; head low, 
a little deeper than wide at margin of preopercle; snout conical, 4 to 4.5 
in head; eye 3.5 to 5; mouth rather small; lower jaw projecting; maxil- 
lary reaching a little past anterior margin of eye; teeth in upper jaw 
mostly tricuspid, in a single series, two series in lower jaw, the outer 
teeth the larger and about 20 in number, some of them with 3 cusps 
and some with 5; gill-rakers short and slender; scales large, regularly 
placed, 11 or 12 on median line in advance of dorsal; dorsal fin inserted 
about midway between margin of opercle and tip of adipose; adipose 
fin present in all Panama specimens, often poorly developed; caudal fin 
covered with small scales at base, its margin rather deeply concave, the 
lobes round and of equal length; anal fin with a sheath of scales 
at base, its margin convex; ventral fins inserted in advance of dorsal; 
pectoral fins somewhat longer than ventrals, failing to reach the base 
of the latter by 4 or 5 rows of scales, 1.25 to 1.4 in head. 
Color brownish above, lighter below; sides with a dark lateral band, 
extending from posterior angle of opercle to base of caudal, situated 
below median line of side. Anteriorly it is very obscure, becoming 
broader and more distinct on middle of side, not broken up into spots 
and not ending in a caudal spot; a shoulder spot present but not con- 
nected with lateral band; fins unmarked. When swimming in the 
water there appears a bright golden streak in front of the dorsal. This 
area is unmarked in preserved specimens. 
Of this species 54 specimens, ranging in length from 60 to 160 mm., 
were preserved and form the basis for the above description. It was 
found only in the Rio Tuyra Basin where it was secured in both ponds 
and streams. It does not confine itself as closely to rocky streams as 
the preceding species. 
Habitat: Rio Tuyra Basin and southward to Colombia. 
