Dec. 28, 1916. Fishes or Panama — Meek and Hildebrand. 357 



aa. Scales somewhat larger, 59 to 68 (most frequently 64) in a lateral 

 series, about 18 rows between base of second dorsal and base of 

 anal; color brownish, paler below than above; rows of scales 

 everywhere with dark lines; ventral surface of head and body 

 uniform brownish. pisonis, p. 358. 



aaa. Scales rather large, 44 to 54 in a lateral series, about 12 rows 

 between base of second dorsal and base of anal; color as in E. 

 pisonis. isthmensis sp. nov., p. 359. 



84. Eleotris picta Kner & Steindachner. 



Eleotris picta Kner & Steindachner, Abhandl. K. Bayer. Ak. Wiss. 



Munchen, X, 1864, 18, PI. Ill, fig. i (Rio Bayano, Panama); 



Regan, Biol. Cent. Amer., Pisces, 1906, 8. 

 Culius (Equidens Jordan & Gilbert, Proc. U. S. Nat. Mus., IV, 1 881, 461 



(Rio Presidio near Mazatlan). 

 Eleotris pictus Jordan & Evermann, Bull. U. S. Nat. Mus., XLVII, 1898, 



2201. 



Head 3 to 3.25; depth 4.45 to 5.55; D. VI-I, 8; A. I, 8; scales 63 

 to 75. 



Body elongate, subcylindrical anteriorly, compressed posteriorly; 

 head depressed above, the profile concave over eyes; snout rather short 

 and broad, 3.56 to 4.95 in head; eye 5.55 to 8.85; interorbital 3.3 to 5.35: 

 mouth large, oblique; the lower jaw projecting; maxillary not quite 

 reaching posterior margin of eye in young, but reaching past this point 

 in adults; cheeks with small, partly embedded scales, visible only in 

 young; chin, cheeks and snout in young with lines of pores, forming a 

 net work, these visible only in specimens of less than 100 mm. in length; 

 a concealed preopercular spine, directed downward and slightly for- 

 ward; teeth small, pointed, in bands; gill-rakers undeveloped; gill- 

 membranes attached to the isthmus; scales very small (average in 

 lateral series, for 27 specimens, 69 — ), about 22 longitudinal series 

 between soft dorsal and anal, those on anterior part of body more or 

 less embedded (in very large examples they are more or less embedded 

 over the entire body); scales on sides posteriorly distinctly ctenoid, 

 except in very large specimens, in which they become smoother; origin 

 of first dorsal about midway between end of snout and tips of rays of 

 second dorsal, the spines weak, the longest not much longer than snout; 

 origin of second dorsal about an eye's diameter in advance of origin of 

 anal, the margin of the fin convex; caudal fin with small scales on base, 

 the margin strongly convex; anal fin similar to second dorsal; ventral 

 fins rather small, inserted under base of pectorals; pectoral fins moder- 

 ate, reaching well beyond the tips of the ventrals, 1.36 to 1.77 in head. 



