THE CATnSHES OF VENEZUELA SICHULTZ 297 



Table 16. — Counts recorded for certain species and subspecies o/ Pseudancistrus 



Table 17. — Measurements, in hundredths of the standard length, for two species of 

 Pseudancistrus, computed from Steindachner' s descriptions 



Character 



Standard length (in mm.) - 



Length of head --. - 



Width of head - - - --- 



Greatest height of body - 



Height of caudal peduncle 



Length of caudal peduncle - 



Diameter of eye - 



Length of snout -- 



Length of mandible --- 



Width of interorbital space - -- 



Height of dorsal rays — -- 



Height of last dorsal rays 



Length of dorsal base... - 



Snout to dorsal orgin, - - 



Distance from base last dorsal ray to adipose fin 



Length of pectoral - 



Length of pelvic -- - 



Snout to pelvic insertion 



Height of anal... ._. 



Length of lower lobe of caudal 



Distance of nasal opening from front border of head. 



Distance of narefrom front of eye.. 



Distance between nostrils 



coquenani 



81 



35.8 



30.9 



18.5 



12.3 



25. 9 



3.70 

 23.5 



8.64 

 11.1 

 21.0 

 13.6 

 22.8 

 44.4 

 16.1 

 25.9 

 23.5 

 49.4 

 11.1 

 30.9 



76 



34.9 



32.9 



18.4 

 11.8 

 26.3 



3.29 

 23.7 



9.21 

 10.5 

 21.7 

 13.1 

 22.4 

 46.0 

 14.5 

 26.3 

 22.4 

 48.7 

 11.8 

 32.9 



Length of head from tip of snout to rear edge of temporal plate 41.2 

 (40.3; 39.5; 41.0; 37.2); length from tip of snout to posterior tip of 

 supraoccipital 39.0 (39.7; 38.1; 41.0; 37. 7); width of head at base of 

 pectoral spine 39.3 (39.1; 38.1; 38.7; 32.1); greatest depth of body 

 15.5 (13.2; 15.6; 17; 14.0); length of snout 28.2 (27.3; 27.1; 29.4; 

 23.7); width of fleshy interorbital space 11.6 (11.3; 11.3; 11.8; 11.2); 



