EIGENMANN: THE PYGIDIID.E, A FAMILY OF SOUTH AMERICAN f'ATFISHES. 315 



"Nasal barbels reaching to gill-opening, maxillary barbel considerably beyond 

 origin of pectoral; upper pectoral ray prolonged; origin of the dorsal behind that 

 of the ventrals, its last ray over or a little in advance of the first anal ray; caudal 

 slightly emarginate in the figure, said to be "schwach convex" in the text. Choco- 

 late brown, thickly peppered with somewhat darker, very small, irregular spots or 

 points." 



33. Pygidium meridae Regan. (Plate XLI X, fig. 2.) 

 Pygidium meridce Regan, Ann. & Mag. Nat, Hist. (7), XII, Dec, 1903, p. 624 



(Merida and from Rio Albireggas above Merida, 3500 meters), Eigenmann, 



Reports Princeton Univ. Exped. Patagonia, III, 1910, 399. 



Habitat. — Cordillera of Merida, Venezuela. 

 13771, I. U. M., one, 99 mm. Merida. Purchased from Rosenberg. 



Head 6 [-7]; D. 10.5 [0-7 branched rays]; A. 9.5 [4 or 5 branched rays]; P. 8; 

 eye in front of the middle of the head; interocular contained three and one-third 

 in the length of the head [3], snout two and one half times. 



Nasal barbel reaching a little beyond the eye; maxillary barbel very slender, 

 reaching about to middle of the pectorals, longer than the head [as long or nearly as 

 long as the head]; outer pectoral ray equals length of maxillary barbel, the pro- 

 jecting filament being half as long as the rest of the fin [one and one-third times as 

 long as head]; origin of ventrals equidistant from base of middle caudal rays and 

 posterior portion of head, the ventrals reaching the vent; origin of anal below 

 penultimate dorsal ray; distance between last anal ray and the middle caudal rays 

 four and three-fourths in the length [four and two-thirds to five times]; caudal 

 rounded [truncate], six and a half times in the length; origin of the dorsal on the 

 vertical from a point just in front of the vent, over tip of ventrals; distance between 

 origin of dorsal and base of middle caudal rays one and three-fourths times in its 

 distance from the snout [one and two-thirds to one and four-fifths]. 



No lateral band; traces of dark spots. 



The characters found by Regan are given in brackets. 



34. Pygidium bogotense Eigenmann. (Plate XLIX, figs. 3, 4.) 

 Pygidium bogatense Eigenmann, Indiana University Studies. No. 10, p. IS. dated 

 Sept., issued Dec. 23, 1912. (Madrid; Chapinero.) 

 Habitat. — Plains of Bogota and northward. 

 4820, C. M., type; 4821, C. M.; and 12679 I. U. M.. paratypes, two hundred thirty- 

 nine, largest SO mm. Puente de Supa, beyond Chapinero, north of Bogota. 

 Eigenmann. 



