Dec. 28, 1916. Fishes of 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. festcB. 



Habitat: Both slopes of Panama, except in the Rio Tuyra Basin. 



45. Piabucina festae Boulenger. 



Piahucina festcB Boulenger, Boll. Mus. Torino, No. 346, XIV, 1899, 

 I (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, 439. 



Head 3. 7 to 4.25; depth 3.6 to 3.95; D. 8or9; A. loorii; 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, II 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. 



