568 BULLETIN OF THE BUREAU OF FISHERIES 



Table 10. — Frequency distribution of the ratio between the length of the pectoral and the pectoral- 

 ventral distance (PV/P) for each of the 11 species of Coregonidae in the Great Lakes 



[Numbers at the top of the column indicate the classes of ratios; entries beneath these are the numbers of each form, by classes; num- 

 bers in the last column give, for each group, the total numbers of specimens included in the table. The various species in each 

 lake often are divided into two size groups. The numbers expressing millimeters, given after the name of the lake, indicate, 

 when preceded by a plus (+) sign, the lower length limit of specimens of the group; when preceded by a minus (— ) sign, the 

 upper length limit] 



Species and lake 



Length, 

 in milli- 

 meters 



1 I 



1 2 



1.3 



1.4 



1.5 



1.6 



1.7 



1.8 



1.9 



2 



2 1 



2.2 



2 3 



2.4 



2.5 



2.6 



2 7 



2 g 



2 9 



Total 



Johannae: 



Michigan . 



+200 

 +200 

 -200 



+210 

 -210 

 +210 

 -210 



+200 

 -200 

 +200 

 -200 

 +200 

 -200 

 +200 

 —200 



+200 

 — 200 

 +200 

 +200 

 -200 

 +200 



+200 

 -200 

 +200 

 +200 

 +200 



-200 

 +200 

 -200 

 +200 

 -200 











10 



32 

 34 



13 



53 

 22 



2 

 1 

 2 

 4 



29 

 5 

 94 

 12 



16 

 60 

 12 



6 

 1 

 14 



23 



26 

 7 



178 

 20 



3 



23 

 27 

 2 



19 



~30" 

 40 



33 



6 

 15 

 2 



43 

 7 

 38 

 42 



21 



4 

 5 

 3 



68 

 1 

 37 

 48 



8 



2 

 1 



















74 

 205 

 88 



275 

 14 

 154 

 185 



130 

 13 

 751 

 170 

 112 

 8 

 82 

 73 



68 

 16 

 233 

 297 

 89 

 69 



181 

 3 

 162 

 49 

 125 



78 

 126 

 41 

 20 

 178 

 120 



168 

 329 

 134 

 904 

 815 

 246 



13 



66 

 181 



71 

 139 

 141 

 202 

 127 

 157 

 122 

 190 



50 



43 



34 

 109 

 121 

 176 

 15 

 36 



2 



Huron 







3 

 2 



9 

 10 



















Alpenae: 



Michigan 





1 



















66 

 3 

 25 

 22 



2 



43 

 1 

 7 

 4 



24 



2 



2 











Huron 































1 

 1 















Zenithicus: 



Nipigon 













1 





















11 

 1 



26 

 7 













Superior 































1 



1 

 1 



220 

 34 



8 



123 

 33 

 11 



2 

 18 



9 



6 



80 

 36 

 28 

 5 

 27 

 18 



1 



20 

 14 

 28 

 1 



16 

 15 



5 

 8 

 24 



2 

 4 

 6 



1 

 1 



3 













Michigan _ 

























1 









Huron. 







1 























2 



2 

 2 



21 

 2 



26 

 2 



10 



8 



11 

 4 



49 

 4 



3 



5 

 13 



2 

 5 















Eeighardi: 



Nipigon 













1 



1 



1 















7 



2 

 3 

 4 



20 

 7 

 8 









Superior. _ 



































57 

 4 

 4 

 1 



1 



56 

 38 

 16 

 2 



22 

 64 

 19 

 3 



7 

 61 

 14 

 14 



2 

 58 

 19 

 12 



2 

 34 



8 

 14 













Michigan 











18 

 2 

 10 



11 



2 

 7 



2 

 1 

 2 



1 





Ontario 











1 















1 

 13 



1 



2 



Nigripinnis: 



Nipigon 







2 



17 



34 

 1 

 1 



67 

 2 



17 

 3 



35 



20 

 31 

 13 



8 

 59 



1 



42 



55 



47 



Superior.. _ 





























41 

 18 

 31 



6 



29 

 13 

 4 



39 



3- 



52 

 74 

 6 

 76 

 84 

 26 



2 

 13 



47 

 11 

 19 



2 



28 

 5 

 3 

 19 

 18 



34 

 85 

 8 

 153 

 174 

 48 



7 

 23 

 4 

 5 

 2 

 5 

 12 

 4 

 12 

 17 

 4 

 3 



15 



7 

 21 

 23 

 26 

 3 

 5 



36 

 8 

 6 



U 

 4 

 2 



6 

 4 



2 



1 

 1 

















Michigan 























Huron - 







1 

 1 



2 



10 







6 



15 

 5 

 1 

 1 



14 



24 



24 

 10 



9 

 3 

 35 









........ 









Kiyi: 



Superior 

























10 



7 



5 



1 



















Huron 



















1 







3 





























6 



32 



2 

 53 

 23 

 236 

 218 

 63 



4 

 18 



6 

 11 



5 

 20 

 13 

 13 

 21 

 37 

 21 

 13 



7 



6 

 23 

 20 

 43 



4 

 - 9 



" 1 



3 

 26 



2 

 27 

 34 

 194 

 136 

 37 























26 



10 



4 

















Hoyi: 







1 



8 



27 

 23 























10 

 34 

 146 

 121 



36 



1 

 16 

 51 

 45 

 17 



1 

 7 

 19 

 6 

 3 



















+200 

 —200 









6 

 6 





















1 



3 

 6 

 5 



15 

 25 

 11 



1 



3 















































Artedi: 



+225 

 -225 

 +225 

 -225 

 +225 

 -225 

 +225 

 -225 

 +225 

 -225 

 +225 

 -225 



+200 

































3 



5 

 18 



6 

 24 

 23 

 20 

 23 

 26 

 30 

 32 

 15 



1 



3 

 13 

 26 

 43 



9 

 11 



1 



4 



38 

 19 

 35 

 57 

 47 

 40 

 37 

 25 

 60 

 12 





























43 

 9 

 24 

 21 

 43 

 29 

 25 

 4 

 38 

 3 



39 

 15 

 24 

 10 

 31 

 12 

 17 



1 

 19 



1 



19 

 4 



14 

 1 



17 

 6 

 8 



6 



4 



3 





1 



















2 

 1 



3 

 9 













4 



~2~ 



5 

 1 



5 



1 



































I 



2 



































2 

 8 



6 



3 









































12 



3 



1 











Nipigon: 













3 



9 



13 

 22 

 13 

 11 

 1 

 1 

















1 



10 



4 



7 

 3 

 2 

















Clupeaformis: 1 









1 



9. 

 23 

 35 

 1 

 6 































3 



6 

 7 



15 



3 

 5 

 1 



2 

 1 

































































































1 



2 



3 



1 

















Quadrilaterale: 



+200 

 +200 

 -200 

 +200 

 -200 

 +200 

 +200 

































3 



3 



16 



21 

 5 

 1 

 6 



19 

 2 



9 

 4 

 4 

 17 

 13 

 2 



8 

 3 

 7 

 15 

 22 

 1 



2 

 1 



10 

 4 

 3 



















62 

 13 

 26 

 42 

 69 

 6 











































3 



1 



















































1 



2 



7 

 1 



1 



1 





































































1 Mostly specimens over 200 millimeters long. 



1 Mostly specimens under 200 millimeters long. 



