136 KENDALL: NEW ENGLAND SALMONS. 



the Atlantic salmon, with the highest proportions of all, are not represented in the lake 

 salmon. The proportions for the 16.5-inch non-breeding and the 18.9-inch breeding 

 Sebago salmon equal those of the 6.5-inch and 8.4-inch male parrs and the 28.6-inch 

 breeding female and the 29.3-inch non-breeding female Atlantic salmon. 



Cpd. — The ranges of variations of proportions for the length-classes of lake and 

 Atlantic salmon are Umited to two proportions each, those of the Atlantic salmon being 

 the lower. 



The 12.8-inch male and 13.2-inch female, the 14.7-inch breeding male and the 14.8- 

 inch breeding female, all of the Presumpscot, the 17.6-inch breeding male and the 19.3- 

 inch breeding female, of Grand Lake, and the breeding 18.9-inch female of Sebago are 

 equal to all three parrs which are alike in this proportion and one per cent higher than 

 the highest of the other Atlantic salmon. 



The 25.5-inch breeding, the 21.9-inch non-breeding males, and the 16.5-inch non-breed- 

 ing female Sebago salmon equal to sLx of the eight length-classes of Atlantic salmon. The 

 two exceptions are the 21.0-inch male and the 20.3-inch female Atlantic salmon which 

 are one per cent lower than the other six. The male and female of lake salmon of the 

 Presumpscot and Grand Lake are exactly the same in their proportions as are also 

 those of the Atlantic salmon. The lake salmon average higher than the Atlantic salmon 

 and clearly show their relationship to the young sahnon. 



Cpd.: Ad. to C. — The proportions for the length-classes of the lake salmon are all 

 higher than any of those of the Atlantic salmon excepting the parrs, and five of the 

 length-classes have even higher proportions than the parr. The lowest proportion for 

 the parrs is six per cent higher than the highest for the other Atlantic salmon. While 

 none of the proportions for the lake salmon exactly equal those for the parr, the range 

 of the proportions of the lake salmon includes those of the parr. 



Cpd.: A. to C— In this proportion also the lake salmon are higher than the Atlantic 

 salmon and the range of proportions for the length-classes includes the proportions for 

 the parrs, the lowest of which is seven per cent higher than for any other of the Atlantic 

 salmon. Six of the ten length-classes of the lake salmon are higher than any of the parr, 

 but the lowest of these sLx is only one per cent higher than the 6.5-inch and 8.4-inch 

 male parrs which are equaled by the 18.9-inch breeding Sebago female. 



Countable Structures. — The countable structures, to which reference has been made, 

 are shown in table 23, where the ranges of variations of the branchiostegal and fin rays, 

 numbers of scales in a longitudinal count, whole numbers of gill rakers on both arms of 

 the first giU arch, and number of vertebrae are shown. All of the counts, with the ex- 

 ception of the vertebrae, were made on the total number of fish represented in tables 

 21-22. The vertebral counts are from fewer individuals which comprised none of the 

 Presumpscot River salmon. The variation in any of the structures is sUght. The most 

 conspicuous difference between the lake salmon and the Atlantic salmon is in the number 

 of anal rays in which the lake salmon runs a Uttle higher than in the Atlantic salmon. 



