ICHTHYOLOGY OF VENEZUELA — SCHULTZ 



67 



I wish to point out an error in the figure of this species as published 

 (Schultz, 1944g, pi. 1, fig. 4). On the head occurs a small black spot 

 that might be mistaken for the e5'^e but that does not occur on the 

 fish or on the original photograph but mysteriously appeared when 

 printed. The text figure fortunately shows the eye in its proper 

 position as does the plate mentioned above. In the latter the eye is 

 the whitish area near the front of the snout. 



The followmg description is of the holotype, U.S.N.M. No. 102753, 

 and three paratypes in the collection of the New York Zoological 

 Society. Measurements, along with those for other species, are 

 presented in table 9. 



Body compressed, tail slightly compressed and tapering to a point; 

 head bluntly rounded; snout short, about equal to interorbital space, 

 contained about 4.2 times in head; jaws without teeth; length of pec- 

 toral fin 2 in head; lateral line straight, the 3 rows of scales below and 

 about 4 rows above enlarged ; scales along back and ventrally on body 

 much smaller in size; head a trifle longer than greatest depth; origin 

 of anal fin about opposite tips of pectorals; anal papilla present, its 

 base under middle of opercle or a vertical Ime through occiput passes 

 through base of anal papilla; lower jaw very slightly shorter than up- 

 per; mouth terminal, small; cephalic canals and pores prominent; 

 mucus pores numerous on head; gill openmg extending a little above 



Table 9. — Counts and measurements made on species of Hypopomus, expressed in 

 hundredths of the length from snout tip to end of anal fin 



Characters 



Length to end of anal fin in millimeters- . 



Length of anal fln base -_ 



Length of head 



Length of snout 



Greatest depth 



Width of interorbital space 



Postorbital length of head 



Snout to occiput 



Diameter of eye 



Distance from anterior to posterior nostril 

 Distance from eye to posterior nostril — 



Width of gill opening 



Snout to anus 



Snout to anal origin 



Anus to anal origin 



Snout to pectoral insertion 



Longest ray of pectoral fin 



Longest ray of anal fin 



Length of tail beyond anal fin 



Width of head at eyes - 



Number of anal rays 



Holo- 

 type 



112.0 



83.0 



12.1 



3.21 



11.06 



3.03 



8.48 



8.57 



1.25 



2.23 



0.28 



2.41 



8.48 



17.4 



9.64 



11.2 



5.35 



4.02 



21.0 



4.46 



214 



beebei 



Para- 

 type 



106.0 

 84.0 

 12.3 

 3.11 

 11.8 

 3.30 

 8.20 

 8.49 

 1.42 

 2.08 

 0.27 

 2.73 

 9.34 

 16.6 

 7.83 

 11.3 

 5.47 



22.3 

 5.19 



228 



Para- 

 type 



124.0 

 83.9 

 11.7 

 3.06 

 9.68 

 3.14 

 8.14 

 8.06 

 1.29 

 2.26 

 0.32 

 2.58 

 8.14 

 16.1 

 8.39 

 11.3 



20.1 

 4.92 

 217 



occidentatis 



Maracaibo Basin 



100.0 



85.0 



13.1 

 4.0 



12.0 

 3.00 

 8.30 



10.0 

 1.50 

 2.70 

 0.80 

 2.70 

 9.50 



16.2 

 7.50 



12.5 

 6.20 

 5.00 



20.5 



4.30 



204 



137.0 

 81.7 

 12.4 

 3.87 

 13.1 

 2.72 

 8.03 

 9.20 

 1.24 

 2.12 

 0.88 

 3.22 

 8.61 

 16.8 

 8.39 

 12.1 

 5.84 

 4.60 

 25.1 

 3.87 

 223 



artedi breeirostris 



After 

 Kaup 



220 or 223 



After 



Stein- 



dachncr's 



figure 



259 or 260 



