Dec. 28, 1916. Fishes or Panama — Meek and Hildebrand. 343 



ccc. Body with cross-bars, forming a series of blotches on upper 

 lateral line and a larger series on middle of sides; each scale 

 with a dark spot; scales in lateral series 30 to 32; 4 rows of scales 

 between lateral line and base of anterior dorsal spines; anal 

 spines 5. , sieholdii, p. 345. 



bb. Lower lip broad, continuous, and free at symphasis; teeth rather 

 blunt; young with dark cross-bars, these less distinct in adult; 

 sides with a large, black blotch tmder posterior part of spinous 

 portion of dorsal; a small black spot at base of upper half of 

 caudal. calobrense, p. 346. 



aa. The anterior pair of teeth in each jaw enlarged; mouth rather 

 large; the maxillary reaching past vertical from anterior margin 

 of eye; sides with a dark lateral band, ending in a jet black caudal 

 spot. umbriferum, p. 347. 



74. Gichlasoma maculicauda Regan. 



Cichlasoma maculicauda Regan, Ann. & Mag. Nat. Hist., Ser. 7, XVI, 



1905, 227 (Lake Yzabal and Rio Motagua, Guatemala; Rio Chagres, 



Panama), and Biol. Cent. Amer., Pisces, 1906, 19, PI. II, fig. 3. 



Head 2.7 to 3.23; depth 1.75 to 2.1; D. XVII or XVIII, 11 or 12; 

 A. VI, 9 or 10; scales 31 to 33. 



Body deep, compressed; anterior profile a little concave in large 

 specimens possessing a slight nuchal hump, convex in others; head deep; 

 snout moderate, 2.1 to 4 in head; eye 2.8 to 4.3; mouth small, terminal, 

 slightly oblique; maxillary failing to reach anterior margin of eye, 3.4 

 to 4 in head; the lips not thickened, the lower one not free at middle; 

 teeth in the jaws pointed, in 2 more or less definite series, the outer and 

 anterior ones enlarged; gill -membranes united across isthmus; gill- 

 rakers short, about 9 or 10 on lower limb of first arch; scales moderate, 

 ctenoid, 5 or 6 rows between lateral line and middle of base of dorsal; 

 lateral line interrupted under soft portion of dorsal, reappearing on the 

 third row of scales below its original course; origin of dorsal over or 

 slightly in advance of base of pectoral, the spines strong, the last one 

 1.8 to 2.5 in head, the soft portion pointed, a few of the rays somewhat 

 produced in large examples, always reaching notably past base of cau- 

 dal, its base with small scales; caudal fin scaly at base, its margin con- 

 vex, more strongly so in adult than in young; anal fin with 6 strong 

 spines, the soft portion similar to that of dorsal; the outer rays of the 

 ventral fins somewhat produced, reaching to or past origin of anal; 

 pectoral fins moderate, 1.14 to 1.3 in head. 



Color yellowish-green to brownish, without distinct cross-bars. 

 Lateral band present only in young (25 mm.), which also have a black 



