THE CATFISHES OF VE'NEZUEILA — SCHULTZ 



337 



Ic. Plates 14 or 15+17 to 19; all fins with first rays elongate and filamentous, the 

 upper and lower rays of caudal fin sometimes as long as standard length: 

 produced part of bony snout 10>^ to 12}^ times in the distance from tip of 

 snout to anus; head 4.9 to 5.2 in standard length; width of head 1.4 to 1.5 

 and interorbital 2.6 to 2.7 in head; width of body at anal origin 6>^ times 

 in distance from anal base to caudal fin base (Maracaibo Basin). 



Sturisoma festivum. M^ ers 



Table 27. — Detailed measurements of two specim£ns of Sturisoma festivum and a 

 specimen of Farlowclla curtirostra, expressed in hundredths of the standard 

 length 



Character 



Standard length (in mm.) 



Head (tip of snout to end of opercle) _ . 



Head (tip of snout to rear supraoccipital) . _ 



Greatest depth 



Snout (eye to tip of snout) 



Interorbital space (fleshy) 



Diameter of eye 



Eye to rear edge of post-temporal plate 



Length of caudal peduncle 



Least depth of caudal peduncle . . . 



Least width of caudal peduncle.-. 



Width of head at base of pectorals 



Tip snout to anus 



Anus to anal origin 



Length oral depression (to rear edge naked area) . 



Distance supraoccipital to dorsal 



Length ramus upper jaw 



Length ramus lower jaw 



Length longest first ray of pectoral 



Length longest first ray of pelvic 



Length longest first ray of dorsal 



Length longest first ray of anal. 



Tip of snout to origin of dorsal 



Tip of snout to origin of anal 



Tip of snout to insertion of pectorals 



Tip of snout to insertion of pelvics 



Sturisoma 

 fesfhmm 



96.0 

 16.0 

 18.7 

 9.7 

 11.5 

 6.56 

 2.92 

 5.42 

 60.9 

 1.15 

 2.50 

 12.5 

 31.8 

 3.65 

 8.96 

 9.15 



31.8 

 19.5 

 36.2 

 30.7 

 27.3 

 35.4 

 16.1 

 26.5 



104.1 

 16.9 

 19.8 

 11.6 

 12.6 

 7.24 

 2.90 

 5.90 

 58.0 

 1.16 

 2.61 

 13.0 

 34.1 

 4.03 

 10.2 

 10.1 

 2.70 

 2.41 

 30.4 

 19.0 

 34.9 

 28.5 

 30.1 

 38.2 

 17.1 

 28.6 



Farlowella 

 curtirostra 



112.5 

 17.3 

 20.4 

 4.S9 

 13.7 

 j.06 

 1.78 

 5.06 

 53.3 

 0.9S 

 1.33 

 7.91 

 36.2 

 7.20 

 S.44 

 21.9 

 1.78 

 1.69 

 12 

 7.82 

 14.2 

 13.1 

 42.3 

 43.6 

 17.1 

 30.5 



Table 28. — Counts made on species of Sturisoma and Farlowella 



