258 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 94 



3a. Three dark bands, two on sides and one along middorsal line anteriorly; 

 a wide diffuse blackish band along lateral line, with wide pale streaks 

 above and below; above upper pale band a second wide blackish band 

 beginning at base of nasal barbel and passing through eye, thence 

 along upper sides close to base of dorsal fin, thence fading posteriorly 

 on upper sides of caudal peduncle; a third blackish streak separated 

 from second black band by a pale streak running along middorsal 

 line of head and back, fading in front of dorsal fin; nasal barbel long, 

 reaching past end of operculum; origin of dorsal equal distance between 

 base of midcaudal fin rays and posterior one-quarter of length of 

 branched pectoral rays; insertion of pelvics equal distance from base 

 of midcaudal fin rays and middle of postorbital length of head or 

 eye in young; length of prolonged upper ray of pectoral fin about 

 equal to distance from its tip to insertion of pelvics; usually a more 

 or less evident dark streak across outer two-thirds of length of caudal 



fin Pygidium emanueli emanueli, new species and subspecies 



36. Three dark bands on sides, none along middorsal line of back anteriorly; 

 a blackish band on midsides along lateral line, above and below 

 which is a pale band or streak; below lower pale streak a band, more 

 or less a series of diffuse blotches running together, beginning in axil 

 of pectoral and continuing above pelvic base and fading posteriorly; 

 above upper pale streak a third intense dark band, beginning at base 

 of nasal barbel, passing through eye, thence a little distance away 

 from base of dorsal, fading posteriorly; no middorsal dark streak; 

 origin of dorsal fin equal distance from base of midcaudal fin rays and 

 middle of length of branched rays of pelvics- insertion of pelvics equal 

 distance from base of midcaudal fin rays and about middle of postorbital 

 length of head; nasal barbel reaches past end of operculum; length of 

 upper prolonged pectoral ray contained 1 to 1>4 times in distance 

 from its tip to insertion of pelvics. 



Pygidium emanueli motatanensis, new subspecies 

 3c. Color plain in adults, but in young about 30 to 40 mm. or shorter, a 

 single black streak along midsides, but at 70 mm. the streak barely 

 discernible; origin of dorsal equal distance from base of midcaudal fin 

 rays and tips of branched rays of pectoral; insertion of pelvics equal 

 distance from base of midcaudal fin rays and middle of postorbital 

 length of head; length of first (prolonged) ray of pectoral contained 

 IJ^ to 1% in distance from its tip to insertion of pelvics; nasal barbel 

 reaches a little past end of operculum; pelvics not reaching past anus. 



Pygidium knerii (Steindachner) 

 26. Back or sides or both with numerous blackish or brownish spots, these 

 small or of moderate size; caudal fin a little concave; belly plain; some- 

 times spots along midsides more or less fusing into a dark, narrow streak; 

 origin of dorsal a little closer to tips of branched rays of pectoral fin 

 than to midbase of caudal fin; insertion of pelvics equidistant from 

 midcaudal fin base and second third of postorbital length of head; 

 length of upper prolonged ray of pectoral equal to 0.9 to 1.2 times in 

 distance between its tip and pelvic insertion; nasal barbel extending 

 considerably past end of operculum. 



Pygidium banneaui maracaiboensis, new subspecies 



