MUSICK: COMPARISON OF THE HAKES 



U tenuis N E 



U tenuis N E 



U tenuis N S 



U tenuis NS 



U tenuis P.E.I. 



U tenuis P E 1 



-J I I L. 



46 48 50 52 



NUMBER OF ANAL FIN RAYS 



-1 I L_ 



Figure 5. — Comparison of the number of rays in the 

 anal fin among three samples of Urophycis tenuis and 

 one of U. chiiss. Explanation of parts of the graph 

 is given in Figure 4 legend. 



U tenuis N E 



46 47 48 49 



TOTAL NUMBER OF VERTEBRAE 



Figure 7. — Comparison of the number of vertebrae 

 among three samples of Urophycis tenuis and one of 

 U. cliuss. Explanation of parts of the graph is given 

 in Figure 4 legend. 



U tenuis N S 



rA-i U tenuis P E I 



U cfiuss 



U. tanuii N. E. 



U. tenuis N S 



U. tenuli PE.I. 



12 13 14 15 16 !7 



NUMBER OF ABDOMINAL VERTEBRAE 



Figure 6. — Comparison of the number of abdominal 

 vertebrae among three samples of Urophycis tenuis and 

 one of U. chiiss. Explanation of parts of the graph is 

 given in Figure 4 legend. 



95 100 lOS 110 115 120 125 130 135 140 145 150 155 



NUMBER OF LATERAL LINE SCALES 



Figure 8. — Comparison of the number of lateral line 

 scales among three samples of Urophycis tenuis and 

 one of U. chuss. Explanation of parts of the graph is 

 given in Figure 4 legend. 



Number of Lateral Line Scales (Figure 8) 



The ranges of variation of the two species did 

 not overlap. There were no significant dif- 

 ferences among the samples of U. tenuis. 



Number of Gill Rakers on the Epibranchial 



The gill rakers of 56 U. chuss and 111 U. 

 tenuis were counted. All U. chuss had three 

 gill rakers on the epibranchial, and all U. te)iuis 

 had two. 



Morphometric Analysis 



Regression of Distance from Snout to Posterior 

 Margin of Orbit on Upper Jaw Length (Figure 9, 

 Table 1) 



All regressions were linear. U. toiuis N.S. 



UPPER JflW LENGIM (MM) 



Figure 9. — Regression of the distance from the snout 

 to the posterior margin of the orbit on upper jaw length 

 from three samples of Urophycis tenuis and one of 

 U. chuss. 



483 



