224 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 5)4 



the snout projecting; no teeth on vomer or palatines; pelvic insertion 

 under the fifth branched ray of the dorsal; anal origin under the 

 adipose origin; the adipose fin is short and high, its height about 

 2)k to 3 times in its total length, and the latter 5K to 6% times in 

 the standard length; the first rays of dorsal and pectorals are soft, 

 not spinous; the first dorsal ray is about as long as the first branched 

 ray, the rear margin of this fin slightly concave; last simple ray of 

 anal about as long as first branched ray, rear margin of anal truncate-,, 

 posterior margins of paired fins rounded; first ray of pectoral four- 

 fifths as long as first branched ray; pectoral fins reaching two- thirds 

 the way to the pelvics, the latter three-fourths the way to the anal 

 origin; anus closer to snout than caudal fin base by length of snout 

 and eye; lobes of caudal fin equal, this fin deeply forked; a membrane 

 occurs along margin of shoulder girdle becoming free toward pectoral 

 base but ending before reaching that far. 



Co/or.— General color blackish above, paler below; a white bar or 

 saddle across occipital, extending down to base of pectorals; a white 

 spot at origin of dorsal fin but no white spot at origin of adipose; 

 middorsal line of caudal peduncle with a white oblong spot just in 

 front of base of upper rays of caudal fin; caudal fin yellowish, sharply 

 contrasting with its black basal portion; paired fins pale; anal fin 

 pale witli some dark pigment basally; base of dorsal fin black, pale 

 distally; anterior base of adipose dark, pale distally; underside of 

 snout white, blackish dorsally; maxillary barbel pigmented dorsally, 

 pale ventrally; mental barbels whitish; when alive, this species was 

 blackish above, tinged with orange-yellowish ventrally, abruptly so 

 below groove behind base of maxillary barbel; pale saddle across 

 occipital yellow, as is spot at origui of dorsal; all median fins tinged 

 with orange-yellow color; posterior margin of caudal fin with a wide, 

 slightly darkish band; anterior rays of anal orange-yellow as is mid- 

 ventral area of caudal peduncle; peritoneum dusky laterally. 



Remarks.— T\\\^ new species can be separated from all others in 

 the genus Cetopsorhamdia by the key on page 218. It is most closely 

 related to nasus, of the Magdalena system, but difters in a more 

 robust body, depth 4.8 to 5.2 instead of over 6 times in nasus. Eigen- 

 mann gives i, 11 pectoral rays for nasiis, but picklei has i, 9; the lower 

 caudal lobe of nasus is much longer than the upper lobe, while in this 

 new species they are equal; the length of the adipose fin in picklei 

 equals the space between rear of dorsal and adipose origin, but in 

 nasus the adipose is con tamed 1% times; other difterences occur, and 

 some are given in the key. 



Named jncklei for Chesley B. Pickle, of the Lago Petroleum Cor- 

 poration, who aided me in the collection of fishes at the southern 

 end of Lago ]Mflracaibo. 



