THE CATFISHES OiF VElMlEZUELA — SCHULTZ 295 



CHAETOSTOMA ANOMALA ANOMALA Began 



CoERONCHo; Charoca 



Chaetostomus anomalus Regan, Ann. Mag. Nat. Hist., ser. 7, vol. 11, p- 

 599, 1903 (M^rida, Venezuela, 1,500 meters; Albirregas and Milla Rivers 

 above M^rida, 3,500 meters) ; Trans. Zool. Soc. London, vol. 17, pt. 3, p. 

 250, pi. 12, fig. 2, 1904 (Merida, Venezuela). 



Collections made in 1942 by Leonard P. Scliultz in the Maracaibo 

 Basin of Venezuela : 



U.S.N. M. No. 121059, taken April 3, in the Rio Chama at Estanques, Estado 

 de Merida, 60 specimens, 23.5 to 79 mm. 



U.S.N. M. No. 121060, taken March 30, in the Rfo Chama 10 km. below Lagu- 

 nillas, Estado de Merida, 5 specimens, 18.5 to 28 mm. 



U.S.N. M. No. 121061, Rfo Tachira, 7 km. north of San Antonio, Catatumbo 

 sj'stem, April 1, 1 specimen, 61.1 mm. 



U.S.N. M. No. 121062, Rio Barrcgas, tributary to Rio Chama just below Egido, 

 Estado de Merida, March 29, 457 specimens. 



U.S.N.M. No. 121063, Rio Gonzd,les, tributary to Rio Chama at La Gonzdles, 

 Estado de Merida, March 29, 159 specimens, 10.2 to 76.6 mm. 



In addition, U.S.N.M. Nos. 101608 and 101615, one specimen each, 

 were collected by Niceforo Maria in the Rio Pamplonita, near Cucuta 

 (Catatumbo system), Santander del Norte, Colombia. 



The following measurements, expressed in hundredths of the stand- 

 ard length, were made on two specimens from the Rio Barregas at Egi- 

 do, Estado de Merida (standard length 82.5; 44.2 mm,, total length 

 107; 60.2 mm.) : Width of head at base of humeral process or in front 

 of base of pectoral spine 39.3 ; 37.6 ; length of head from tip of snout to 

 posterior end of supraoccipital plate 33.4; 35.7; tip of snout to upper 

 edge of gill opening 32.2; 30.6; greatest depth of body 19.5; 17.9; 

 length of snout 24.6; 25.1 ; width of fleshy interorbital space 11.6; 12.4; 

 diameter of eye 3.64; 4.75; length from base of last anal ray to midbase 

 of caudal fin rays 27.9; 25.1 ; least depth of caudal peduncle 12.2; 12.2; 

 length of ramus of lower jaw 11.5; 12.00; greatest width of lower lip 

 7.52 ; 7.96 ; rear edge of eye to posterior edge of temporal plate opposite 

 first lateral line pore 8.12; 8.60; length of first ray of dorsal fin 21.2; 

 24.4; length of last dorsal ray 16.5; 14.9; length of pectoral spine 25.2; 

 25.3; length of upper bony ray of caudal fin 24.4; 28.5; length of lower 

 bony ray of caudal fin 29.6; 34.2; length of ray of adipose fin 6.30; 5.56; 

 length of longest anal fin ray 9.94; 10.2; length of base of dorsal fin 

 26.7; 27.1; distance from bony edge of nasal opening to tip of snout 

 17.0; 17.2; distance from edge of nasal opening to eye 5.54; 6.79; tip of 

 snout to origin of dorsal fin 46.8; 48.2; tip of snout to origin of anal 

 fin 69.7; 72.4; tip of snout to origin of adipose 83.1; 83.7; distance from 

 anus to origin of anal 10.5; 10.6. 



The number and arrangement of scutes and spines appear to be the 

 same in both anomala and sovichthys. 



