560 BULLETIN OF THE BUREAU OF FISHERIES 



Table 5. — Distribution of the species of Coregonidse. in the larger lakes of the Laurentian Basin 



Species 



Nipigon 



Superior 



Michi- 

 gan 



Huron 



Erie 



Ontario . 









XXXXXXXX 



X 

 X 

 X 

















L. zenithicus. ... 



X 

 X 

 X 



XXXXXX 







L. reighardi 





ixxxxx 



L. nigripinnis . -- .. 



xxxx: 





L. kiyi 





L. hoyi '. 



XXXXX 





L. artedi __ 



X 



L. nipigon. . * 



Coregonus clupeaformis. _ 



X 

 X 



X 

 X 



X 

 X 



X 



X 

 X 



Prosopium quadrilaterale 







Table 6. — Frequency distribution of the total number of gill rakers on the first branchial arch for 

 each of the 1 1 species of Coregonidse in the Great Lakes 



[Numbers at the tops of the columns are classes of gill-raker numbers; entries below these are numbers of individuals in each class; 

 entries in the last column are the number of specimens of each form included in the table] 



Species and lake 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



30 



31 



32 



14 

 19 



15 



Johannse: 

























1 



18 



11 

 42 



18 

 91 



20 

 122 



26 

 82 



15 

 49 



3 























4 



Alpenae: 



j 



















Zenithicus: 







































































I 

 4 



8 

 3 

 10 





































Reighardi: 



































































































1 



4 



1 



Clupeaformis: 























1 



24 

 44 

 44 

 18 

 5 



6 

 34 

 43 

 55 

 21 

 13 



11 



32 

 42 

 49 

 36 

 10 



11 























2 

 9 

 20 

 3 

 1 



15 

 11 

 18 

 20 

 4 



2 

 1 

 4 



2 

 2 







Michigan. - 



















1 

 1 







Huron. 



















2 





• Erie....... 







































1 





Quadrilaterale: 







1 



28 

 10 

 25 

 5 





1 

 4 



1 

 3 













Superior. . ... 



4 



4 



6 



12 

 5 

 22 



14 

 6 



11 

 1 



1 



























Michigan. 



























Huron 





























Ontario 































































Species and lake 



33 



34 



35 



36 



37 



38 



39 



40 



41 



42 



43 



44 



45 



46 



47 



48 



49 



Johannae: 



Michigan 



" 9 

 9 



1 



32 



2 

 1 



6. 

 4 



8 

 38 



1 

 2 



1 

 1 



15 

 47 



13 

 10 

 2 

 16 



35 

 44 

 73 

 14 



1 





























. Huron.. 





























Alpena?: 



Michigan 



26 

 55 



19 

 27 

 4 

 17 



15 



52 

 87 

 20 



31 

 40 



35 

 59 

 5 

 28 



8 

 43- 

 63 

 13 



47 



37 



36 

 72 

 20 

 29 



1 



25 

 45 

 11 



47 



52 



38 

 115 

 31 

 19 



60 

 34 



9 

 182 

 19 

 23 



54 

 21 



3 

 171 

 17 

 7 



41 

 10 



4 



132 

 13 



29 



2 



14 

 1 



4 



6 









TTnrnn . . . 









Zenithicus: 



Nipigon.- 















Superior _ 





72 

 7 

 1 



27 

 4 

 1 



8 



4 



















Huron 





3 



13 

 11 

 25 

 2 



9 



17 

 31 

 46 

 8 













Reighardi: 

 Ninipon 



















12 

 26 

 1 



6 

 14 

 4 



5 

 7 

 2 



2 

 5 

 1 



















3 















. Ontario . 















Nigripinnis: 





4 

 5 

 4 

 14 



1 

 1 

 1 

 21 



5 

 2 

 4 

 10 



1 

 1 



9 

 1 

 7 

 20 



13 



37 

 1 

 9 



19 



37 

 9 











1 



6 



17 



18 



46 



33 

 1 

 1 



7 

 22 

 14 



7 



15 

 1 

 3 



7 

 6 

 7 

 10 



7 











8 

 29 



















2 



23 

 32 

 25 



1 



3 

 1 

 4 



22 



Kiyi: 



Superior ^ 









3 

 20 

 24 



8 

 41 

 51 



11 

 42 

 47 



13 

 37 

 30 







2 

 1 



7 

 8 











Huron ^ ... 

















27 



15 



14 



4 





1 



