GREAT LAKES COREGONIDS 



581 



Table 25. — Numerical expressions of certain systematic characters for the type of Leucichthys zenithicus 

 and for 19 other specimens from Lake Superior, 9 of them over 200 millimeters long and 10 under 

 200 millimeters, selected according to size — Continued 



Size 



Field 



SA/H 



SA/O 



H/E 



H/M 



H/S 



H/J 



H/Ad 



H/R 



O/E 



O/M 



O/S 



PV/P 



AV/V 



DR 



AR 



VR 



PR 



DC 



AC 



Bt 



Over 200 



1 62517 



2.9 



4.0 



4.6 



2.5 



3.5 



2.0 



4.2 



6.2 



3.3 



1.8 



2.5 



1.6 



1.3 



10 



12 



12 



16 



1.7 



1.0 



10 



in i 1 1 i - 



OoOoZ 



3 0 



4 1 



4 4 



2 4 



3 4 



2 0 



3 6 



5 9 



3 3 



1 8 



2. 6 



2 0 



1 4 



10 



12 



11 



16 



1 5 



94 



Q 



meters. 



53888 



3.1 



i.2 



4^4 



2.5 



3. 3 



L9 



3! 4 



5! 7 



3^3 



L.8 



2^5 



2.1 



1.5 



11 



12 



11 



16 



L4 



!95 



9 





53894 



3.0 



4.2 



4.4 



2.4 



3.7 



2.0 



3.4 



6.6 



3.2 



1.8 



2.7 



1.8 



1.6 



10 



10 



11 



15 



1.4 



.96 



9 





53897 



3.2 



4.3 



4.6 



2.3 



3.4 



1.9 



3.5 



4.8 



3.4 



1.7 



2.5 



1.8 



1.5 



11 



12 



11 



18 



1.4 



1.0 



9 





53901 



3.0 



3.8 



4.8 



2.4 



3.6 



1.9 



4.4 



5.7 



3.8 



1.9 



2.8 



1.7 



1.4 



10 



12 



11 



16 



1.4 



.94 



9 





57033 



3.0 



4.1 



4.7 



2.5 



3.5 



2.0 



3.6 



5.9 



3.4 



1.8 



2.5 



1.7 



1. 5 



10 



11 



11 



17 



1.5 



.93 



9 





57067 



3.0 



3.9 



4.0 



2.5 



3.5 



1.9 



3.4 



6.4 



3.0 



1.9 



2.7 



1.6 



1.3 



11 



12 



11 



16 



1.6 



1.0 



9 





58095 



3.0 



3.9 



4.3 



2.4 



3.3 



1.9 



3.1 



6.5 



3.3 



1.9 



2.5 



1.7 



1.3 



10 



13 



11 



16 



1.5 



1.0 



9 





58104 



3.0 



3.9 



4.2 



2.3 



3.5 



1.9 



3.1 



5.9 



3.2 



1.8 



2.7 



1.6 



1.4 



10 



12 



11 



16 



1.6 



.98 



9 



Under 200 



53380 



2.9 



3.7 



3.7 



2.6 



3.6 



2.1 



4.0 



7.0 



2.9 



2.0 



2.8 



2.0 



1.2 



11 



13 



11 



16 



1.6 



.93 



8 



m i 1 1 i - 



53651 



3.0 



4.3 



4.2 



2.6 



3.7 



2.1 



3.4 



7.0 



3.0 



1.8 



2.6 



1.7 



1.5 



10 



11 



11 



17 



1.6 



1.0 



9 



meters . 



53655 



2.9 



3.9 



4.0 



2.5 



3.6 



2.0 



4.7 



6.0 



3.0 



1.8 



2.7 



1.6 



1.4 



10 



11 



11 



16 



1.5 



1.0 



9 





53661 



3.0 



4.1 



4.0 



2.5 



3.7 



2.0 



3.9 



8.7 



3.0 



1.8 



2.8 



2.1 



1.4 



11 



11 



11 



16 



1.4 



.96 



9 





53805 



3.0 



4.0 



3.8 



2.5 



3.5 



1.9 



3.0 



7.0 



2.9 



1.9 



2.6 



1.5 



1.3 



10 



10 



11 



16 



1.7 



1.0 



9 





57059 



3.0 



4.0 



4.2 



2.4 



3.5 



2.0 



3.4 



7.5 



3.2 



1.8 



2.7 



1.9 



1.3 



10 



12 



11 



16 



1.5 



.92 



8 





57820 



3.1 



4.2 



3.9 



2.6 



3.6 



1.9 



3.5 



7.5 



2.9 



1.9 



2.6 



1.7 



1.4 



11 



11 



11 



16 



1.6 



1.1 



8 





57832 



2.7 



3.5 



3.9 



2.6 



3.4 



2. 1 



4.2 



8.1 



3.1 



2.0 



2.6 



1.7 



1. 1 



10 



12 



11 



17 



1.5 



.94 



8 





57944 



2.8 



3.7 



4.1 



2.6 



3.4 



2.0 



4.1 



8.0 



3.1 



2.0 



2.6 



1.5 



1. 1 



10 



12 



11 



17 



1.7 



1. 1 



9 





58471 



3.0 



3.9 



3.8 



2.4 



3.4 



1.8 



3.6 



7.8 



2.9 



1.8 



2.6 



1.8 



1.4 



11 



12 



11 



15 



1.6 



.92 



9 



1 Type, U. S. National Museum number. 



Table 26. — Records of the occurrence of Leucichthys zenithicus in Lake Nipigon 



[For each record is given, if known, the date and locality, the kind of gear used to make it, the depth of the water where made, 



and the total number of preserved specimens examined] 



Date 



Location 



Gill-net 

 mesh, 



in 

 inches 



Depth, 

 in 



fathoms 



Preserved speci- 

 mens examined 



+200 

 mm. 



1 



July 



26, 



1922 



2 



Sept. 



10, 



1923 



3 



July 



21, 



1924 



4 



July 



29, 



1924 



5 



July 



25, 



1924 



6 



Sept. 



6, 



1923 



7 



Sept. 



5, 



1923 



8 



Sept. 



3, 



1923 



9 



Aug. 



15, 



1922 



10 



Aug. 



23, 



1923 



11 



July 



19, 



1924 



12 



Aug. 



17, 



1922 



13 



Aug. 



1, 



1922 



14 



Aug. 



25, 



1921 



15 



June 



15, 



1922 



16 



July 



25, 



1922 



17 



Aug. 28, 



1923 



18 



Aug. 



15, 



1922 



19 



Oct. 



2fi, 



1922 



20 



June 



14, 



1924 



Off Macdiarmid 



do 



do 



do ____ _ 



Off Blackwater River 



Off Selwyn Island 



Off McKellar Island 



Humboldt Bay.. 



Off Murchison Island 



Ombabika Bay 



do 



Off Whitesand River 



Grand Bay _ _ 



Off source of Nipigon River _ 



do 



do 



Off Virgin Island 



Unknown 



do 



do 



2J42M 



30 



254 2% 



4J. 



6-35 

 25 

 10 

 10 

 25 

 15-20 

 12 

 15 

 10-15 

 10-15 

 25 



1 All but records 1, 13, 16, and 19 are from University of Toronto collections. 



