THE CATFISHES OF VENEZUEiLA — SCKULTZ 219 



26. Total length of adipose fin 0.8 to 0.9 in dorsal origin to adipose origin and 

 3J4 in standard length. Six pale bars across back and somewhat on sides, 

 first between upper end of gill openings, second at origin of dorsal, next 

 rear base of dorsal, fourth origin of adipose, another under middle of 

 adipose and last across caudal peduncle; these pale bars separated by 

 blackish; distance from pelvic insertion to anal origin 1.5 in snout to 

 pelvic insertion; length of shortest midcaudal fin rays in total length of 

 adipose fin 1.9, in longest caudal fin ray 1.4, and 1.9 in distance from 



dorsal origin to adipose origin Cetopsorhamdia rosae (Eigenmann) ' 



2c. Total length of adipose fin 1.2 in dorsal origin to adipose origin and 3.7 in 

 standard length; color nearly uniform, with traces of paler bars on back 

 anteriorly; distance from pelvic insertion to anal origin 1.6 in snout to 

 pelvic insertion; length of shortest midcaudal fin rays 3 times in total 

 length of adipose fin, 2.2 in longest caudal fin ray, and 3.4 in distance from 



dorsal origin to adipose origin Cetopsorhamdia rairini (Haseman) "* 



16. Total length of adipose fin contained more than 4 times in standard length 



and about 1.4 to 2.0 times in distance from dorsal origin to adipose origin. 



3a. Greatest height of adipose fin contained 2 to 3.8 times in its total length. 



4a. Three or four distinct pale bars across back and on sides, first between 



upper end of gill openings, second represented as a white .spot at base 



of first rays of dorsal connecting with a palish area below, third from 



between dorsal and adipose, last across caudal peduncle (only a singje 



blackish bar under adipose); greatest depth of adipose 2.2 in its total 



length; length of shortest midcaudal fin rays 1.6 in total length of 



adipose, 2.5 in longest ray of caudal fin, and 2.3 in distance from dorsal 



origin to adipose origin; distance between pelvic insertion and anal 



origin 2.1 in snout to pelvic insertion; total length of adipose fin 4.8 in 



standard length and 1.4 in distance from dorsal origin to adipose 



origin; head 3.6, and width of head across base of pelvics 5, in standard 



length; anal origin a very little in advance of adipose origin, almost 



under it Cetopsorhamdia shermani, new species 



46. Color not as in 4a; no wide pale color bars between dorsals or on caudal 



peduncle; color plain blackish posteriorly; anal origin directly under 



adipose origin or a very little behind it. 



5a. Distance from pelvic insertion to anal origin 1.3 to 2.0 times in snout 



to pelvic insertion. 



6a. Distance from pelvic insertion to anal origin 1.4 in snout to pelvic 



insertion; total length of adipose fin 4.5 or 4.6 in standard length, 



and 1.5 in distance from dorsal origin to adipose origin; width of 



head across pectoral bases 5}4, head 5.2, depth about 5% in 



standard length; height of adipose about 3.7 in its length; length 



of shorte.st midcaudal fin rays 2}^ in total length of adipose, 3.1 



in dorsal origin to adipose origin and 2.5 in longest (upper lobe) 



rays of caudal fin; a dark blotch or bar on back just behind head, 



one at origin of dorsal, third at rear base of dorsal, fourth between 



base of dorsal and adipose origin, the spaces between these a little 



paler but not white bars; caudal fin blackish, not white and sharply 



contrasting with blackish caudal base. 



Cetopsorhamdia hasemani (Steindachner) ' 



8 Chasmocranus rosae Eigenmann, Mem. Carnegie Mus., vol. 9, No. 1, p. 220, pi. 1, fig. 4, 1922 (Rio Negro, 

 Villavicencio, Colombia). Oosline (op. cit., p. 88) refers this species to Pariolius Cope. I cannot agree that 

 its head is noticeably depressed. 



' ImpoTfinis mirini Haseman, Ann. Carnegie Mus., vol. 7, p. 318, pi. 47, 1911. Qosline (op. cit., p. 88) 

 refers this species to Cetopsorhamdia also). 



» Imparfinis hasemani Steindachner, Denkschr. Akad. Wiss. Wien, vol. 93, p. 59, figs. 1-3, 1917 (Rfo 

 Surumii at Serra do Mello; Rio Branco at Bern Querer; Rio Tapajos at Santarem), 



