130 KENDALL: NEW ENGLAND SALMONS. 



Lake salmon are higher in: snout to preo. (3%), interorbital (2%), eye (2%), maxillary 

 (3%), mandible (4%), base D. (1%), head (1%), snout to nape (1%), nape to D. (1%), 

 snout to P. (1%), P. to V. (2%), Cpd.: Ad. to C. (5%), Cpd.: A. to C. (26%). In 

 the last two proportions of this table the lake salmon are higher than any Atlantic 

 salmon. 



Lake sahnon are lower in: snout (2%), D. to Ad. (2%), V. to A. (2%), A. to C. (1%). 



The two are equal in: Base A., height D., height A., length P., length V., Ad. to C, 

 Cpd. 



Table 21 includes no average lengths of lake salmon as great as the smallest average 

 length of the breeding Penobscot salmon. In table 22, the average of lake salmon of 

 highest length class is 25.5 inches and the lowest of the Atlantic salmon is 28.3 inches. 

 Comparison of the averages of percentile proportions show that they are divisible into 

 three groups: (1) those in which the lake salmon exceeds the Atlantic salmon; (2) those 

 in which the Atlantic salmon exceeds the lake salmon; and (3) those in which the lake 

 salmon and Atlantic salmon are equal. The lake salmon group comprises Sebago Lake 

 fish and the Atlantic salmon the Penobscot fish. Lake salmon are higher in: snout to 

 preo. (1%), eye (1%), snout (0.7%), mandible (4%), length P. (1%), head (4%), 

 snout to nape (2%), snout to P. (3%), Cpd.: Ad. to C. (10%), Cpd: A. to C. (16%). 



Lake salmon are lower in: Interorbital (1%), maxillary (1%), D. to Ad. (2%), P. to V. 

 (2%), V. to A. (3%), A. to C. (1%), Cpd. (1%). 



The two are equal in: Base D., base A., height A., length V., nape to D., Ad. to C. 



The averages of the proportions of two female breeding salmon may be classified in 

 the same way. They are female Grand Lake salmon averaging 18.9 inches in length and 

 female Penobscot salmon 28.6 inches in length. Lake salmon are higher in: snout to 

 preo. (1%), depth head (3%), eye (4%), maxillary (2%), base D. (1%), base A. (1%), 

 head (2%), snout to nape (2%), Cpd. (1%), Cpd: Ad. to C. (12%), Cpd. A. to C. 



(10%). 



Lake salmon are lower in: Interorbital (1%), height D. (1%), height A. (1%), nape to 

 D. (2%), D. to Ad. (2%), snout to P. (1%), P. to V. (1%), V. to A. (1%). 



The two are equal in: snout, mandible, length P., length V., Ad. to C, A. to C. 



Of the proportions in which the lake salmon exceeds the Atlantic salmon there are six 

 which are common to the three length-groups; they are: snout to preo., eye, head, snout 

 to nape, Cpd. : Ad. to C, and Cpd. : A. to C. 



Of the proportions in which the Atlantic salmon exceed the lake salmon, there are only 

 two which are common to the three comparisons, i.e., D. to Ad. and V. to A. 



Of those proportions in which the lake salmon and Atlantic salmon are equal, only 

 those of the length V. and Ad. to C. are common to the three comparisons. 



A comparison of all these percentile proportions reveals that certain widely different 

 length-classes of lake salmon and Atlantic salmon are alike in some of their percentile 

 proportions. Thus certain length-classes of lake salmon are equal to one length-class 

 only of breeding Atlantic salmon, and in this relation the sexes are sometimes aUke and 

 sometimes opposite. 



