THE CATFISHES OF VENEZUEI^A — ^SCHULTZ 



207 



PIMELODUS GROSSKOPFII NAVARROI, new subspecies 



Plate 1, C 



Holotype. — U.S.N.M. No. 121174, a specimen, 252 mm. in standard 

 length, taken in the Rio Palmar at the bridge 70 km. southwest of 

 Maracaibo by Leonard P. Schultz, March 6, 1942. 



Paratypes.—V.S.'NM. No. 121172, 17 specimens, 61 to 191 mm., 

 collected by Leonard P. Schultz in the Rio Socuy 3 km. above mouth, 

 north of Maracaibo, February 24, 1942; U.S.N.M. No. 121173, 4 

 specimens, 76 to 147 mm., collected by Leonard P. Schultz in the Rio 

 Negro below mouth of Rio Yasa, March 2, 1942; U.S.N.JVL No. 



Table 3. — Measurements (in hundredths of the standard length) for species of 



Pimelodus 



Character 



Standard length (in mm.). 



Head to end of supraoccipital process 



Head to end of operculum. -.. 



Width of head at base of pelvics 



Greatest depth of body.. -- 



Length of snout - - 



Diameter of eye 



Distance from eye to posterior nostril.. 



Distance between anterior and posterior 



nostrils - 



Width of fleshy interorbital space 



Postorbital length of head -. 



Total length of adipose fin 



Height of adipose fin 



Least depth of caudal peduncle - 



Length of caudal peduncle. 



Length of dorsal spine... 



Length of pectoral spine 



Length of longest ray of pelvics 



Length of longest ray of anal 



Length of upper caudal lobe 



Length of lower caudal lobe... 



Length of shortest middle caudal rays.. 



Distance from snout to dorsal origin 



Distance from snout to anal origin 



Distance from snout to adipose origin 



Distance from snout to pelvic insertion 



Distance from snout to pectoral insertion 



Distance from snout to anus... 



Anus to anal origin.. 



Length of maxillary barbel. 



Length of outer mental barbel 



Length of inner mental barbel 



Width of base of supraoccipital process 



Length of supraoccipital process. 



clariaa clarias 



U.S.N.M. No. 

 11G456, Mag- 

 dalena system 



clarias coprophagus 



103 

 34.4 

 28.6 

 16.7 

 20.9 

 11.6 

 6.80 

 5.24 



3.49 

 9.80 

 10.0 

 18.9 

 6.80 

 9.22 

 19.4 

 21.8 

 19.7 

 17.3 

 16.9 

 33.5 

 29.6 

 9.22 

 38.4 

 69.9 

 68.9 

 48.0 

 26.2 

 53.0 

 17.5 

 109 

 44.6 

 24.7 

 6.31 

 10.6 



103.7 

 35.0 

 28.2 

 17.5 

 20.8 

 12.0 

 5.98 

 5.30 



3.57 

 9.84 

 11.6 



20.7 

 6.75 

 8.97 



19.8 



22.3 



19.9 



16.6 



17.0 



35.2 



30.0 

 9.16 



39.2 



69.1 



67.2 



47.6 



25.8 



54.2 



15.6 



93.6 



36.2 



23.1 

 6.27 



10.1 



Rio 

 Socuy, 

 para- 

 type 



122.0^ 

 36. o' 

 29.3 

 18.8 

 22.3 

 12.7 

 6.20 

 6.69 



3.75 

 10.3 

 11.3 

 17.9 



6.60 



9.46 

 20.1 

 25.7 

 23.7 

 18.3 

 17.5 

 37.2 

 34.0 



9.14 

 41.9 

 72.7 

 69.1 

 50.4 

 25.8 

 56.8 

 15.9 

 89.5 

 37.5 

 24.1 



7.01 

 10.6 



Rio 

 Apon, 

 para- 

 type 



121.0 

 36.7 

 29.5 

 38.0 

 21.8 

 12.5 

 6.25 

 6.25 



3.78 

 10.4 

 12.2 

 16.9 



6.08 



8.64 

 17.1 

 28.0 

 24.5 

 17.0 

 16.0 

 35.6 

 30.4 



8.64 

 42.0 

 70.7 

 70.5 

 49.8 

 25.2 

 56.1 

 14.6 

 92.6 

 45.2 

 26.7 

 6.99 

 11.2 



Rfo 

 Agua 

 Cali- 

 ente, 

 holo- 

 type 



163 

 36.3 

 29.5 

 19.5 

 24.2 

 13.1 

 5.52 

 6.75 



3.50 

 10.7 

 11.4 

 15.6 



5.21 



9.32 

 16.6 

 27.0 

 23.3 

 18.1 

 17.8 

 34.4 

 31.4 



8.96 

 41.5 

 72.1 

 72.0 

 61.8 

 26.4 

 67.0 

 14.5 

 84.7 

 44.8 

 27.6 

 7.05 

 11.3 



grosskopfii navar* 



TOi 



Rio 

 Pal- 

 mar, 

 holo- 

 type 



252 

 31.0 

 24.8 

 18.8 

 19.4 

 11.5 

 4.09 

 6.00 



2.90 

 9.13 



9.72 

 22.5 



5.76 



8.02 

 18.7 

 22.2 

 18.8 

 14.8 

 14.3 

 22.2 

 22.4 



6.75 

 35.6 

 72.0 

 64.8 

 46.6 

 22.9 

 56.4 

 16.5 

 78.2 

 41.7 

 22.2 

 6.35 

 9.84 



Rfo 



Socuy, 

 para- 

 type 



150. 5 

 33.3 

 26.8 

 18.5 

 19.9 

 12.3 

 4.98 

 5.38 



3.39 

 8.30 

 10.6 

 22.2 

 6.04 

 8.63 

 18.7 

 26.0 

 20.6 

 17.3 

 15.9 

 33.3 



8.63 

 39.2 

 71.7 

 65.5 

 48.1 

 2.3.7 

 55.2 

 14.7 

 100.0 

 35.9 

 21.6 

 6.17 

 10.7 



