GREAT LAKES COREGONIDS 



593 



Table 41. — Numerical expressions of certain systematic characters for 10 specimens of Leucichthys 

 nigripinnis from Lake Michigan, selected according to locality 



Field 

 No. 



Locality 



Length 



Rakers 



Sex 



Scales 



L/H 



L/O 



L/DB 



L/AB 



L/DA 



L/AT 



L/D 



L/W 



D/W 



SD/H 



SD/O 



SA/H 



1564 



Grand Haven, 





































Mich 



272 



18+31 



5 



81 



4.3 



5.7 



8.0 



9.0 



2.5 



8.3 



3.4 



6.4 



1.9 



2. 1 



2.8 



3.2 



1684 



Milwaukee, Wis. 



274 



18+32 



Im. 3 



86 



4.4 



6.0 



9.4 



8.8 



2.7 



7.7 



3.4 



6.8 



2.0 



2. 1 



3.0 



3.3 



1686 



do 



265 



19+31 



Ira. 9 



81 



4.4 



6.3 



9.8 



9. 2 



2.9 



7.6 



3.8 



6.4 



1.6 



2. 1 



3.0 



3.3 



2891 



C harle voix, 





































Mich 



286 



16+30 



9 



77 



4. 1 



5.6 



9. 1 



8.6 



2.8 



8.1 



3.5 



7.1 



2.0 



2.0 



2.7 



3.2 



3203 



Washington Har- 





































bor, Wis 



262 



16+30 



3 



81 



4.3 



5.6 



9.7 



8.4 



2.7 



8.8 



3.9 



8.4 



2.1 



2. 1 



2.7 



3.2 



3305 



Sturgeon Bay, 





































Wis.. 



254 



19+29 



S 



78 



4. 1 



5.4 



8.7 



8.7 



2.7 



7.6 



4.1 



7.9 



1.9 



2.0 



2.7 



3.1 



3397 



Ludington, 





































Mich 



294 



19+32 



<? 



85 



4.2 



6.0 



9.7 



8.8 



2.9 



7.3 



4.2 



8.9 



2.0 



2.0 



2.8 



3.2 



3550 



Michigan City, 





































Ind 



259 



18+34 



Im. $ 



83 



4.3 



6. 1 



9.5 



8.6 



2.7 



7.6 



4. 1 



8.0 



1.9 



2. 1 



3.0 



3.3 



3684 



Port Washington, 





































Wis 



294 



16+28 



9 



82 



4.4 



6. 2 



8.9 



9.2 



2.7 



7.7 



3.8 



7.7 



2.0 



2. 1 



3.0 



3.3 



3987 



Frankfort, Mich. 



300 



17+30 



2 



87 



4.4 



6.0 



8.8 



9.4 



2.6 



7.7 



3.9 



7.9 



1.9 



2.2 



3.0 



3.4 



Field 

 No. 



Locality 



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 



Br 



1564 



Grand Haven, 











































Mich 



4.3 



4.3 



2. 7 



3.8 



2.0 



3.9 



5.1 



3. 2 



2.0 



2.9 



1.8 



1.3 



11 



12 



12 



17 



1.3 



1.0 



8 



1684 



Milwaukee, Wis. 



4.6 



4.2 



2.6 



3.7 



2.0 



3.3 



5.6 



3.1 



1.8 



2.7 



1.8 



1.4 



10 



12 



12 



17 



1.5 



1.0 



9 



1686 



do 



4.7 



4.4 



2.6 



3.7 



2.0 



3.2 



4.9 



3.1 



1.8 



2.6 



1.8 



1.4 



10 



11 



12 



15 



1.7 



1.0 



8 



2891 



Charlevoix, Mich. 



4.3 



4.4 



2.7 



3.7 



2.0 



3.4 



6.8 



3.2 



2.0 



2.7 



1.7 



1.4 



10 



12 



11 



18 



1.6 



.99 



10 



3203 



Washington Har- 











































bor, Wis. .. .. 



4.2 



4.0 



2.7 



3.5 



2.0 



3.5 



5.5 



3.1 



2.0 



2.7 



1.6 



1.5 



10 



13 



11 



17 



1.8 



.94 



8 



3305 



Sturgeon Bay, 











































Wis 



4.2 



4. 2 



2.6 



3.6 



2.0 



3.3 



5.0 



3.1 



2.0 



2.8 



1.6 



1.3 



11 



12 



12 



18 



1.5 



1.0 



8 



3397 



Ludington, Mich. 



4.5 



4.3 



2.7 



3.9 



2.0 



3.2 



5.5 



3.0 



1.9 



2.8 



1.6 



1.4 



10 



12 



11 



15 



1.7 



1.0 



9 



3550 



Michigan City, 











































Ind 



4.7 



4.3 



2.7 



3.9 



2.0 



3.3 



5.9 



3.0 



1.9 



2.7 



1. 6 



1.4 



10 



13 



11 



16 



1.6 



.93 



9 



3684 



Port Washington, 











































Wis. 



4.7 



4.4 



2.6 



4. 1 



1.9 



2.9 



5.4 



3.1 



1.8 



2.9 



1.8 



1.3 



10 



12 



11 



17 



1.5 



1.0 



9 



3987 



Frankfort, Mich.. 



4.6 



4.4 



2.6 



3.7 



2.0 



3.3 



6.0 



3.2 



1.9 



2.7 



1.7 



1.5 



10 



11 



12 



17 



1.5 



.99 



9 



Table 42. — Records of the occurrence of Leucichthys nigripinnis in Lake Huron 



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

 of the bottom where made, the weight of the lift and the abundance of this species in it, and the total number of preserved 

 specimens examined] 



Port from which nets 

 were set 



Lake Huron proper: 

 Cheboygan, Mich. 



Rogers, Mich 



Alpena, Mich 



Rec- 

 ord 

 No. 



Date 



July 21,1917 

 July 24,1917 

 Aug. 13,1917 

 Sept. 7,1917 

 Sept. 10, 1917 



Sept. 12,1917 

 Sept. 14, 1917 



Sept. 17,1917 

 Sept. 21,1917 

 Sept. 24, 1917 

 Sept. 26, 1917 

 Oct. 17,1917 

 Oct. 20,1917 

 Aug. 30,1919 



Sept. 3,1919 

 Aug. 7, 1920 



June 28,1923 



Location 



5 miles north of Spectacle Reef. 



38 miles east of can buoy 



Center of lake east of can buoy. 

 Center of lake northeast of can 

 buoy. 



Center of lake east of can buoy . 

 Center of lake northeast of can 

 buoy, 

 .do. 



Center of lake east of can buoy . 

 do._ 



'"""do"'" 

 .do. 



18 miles N. by E. Vi E. of 

 Thunder Bay Island. 



28 miles E.% S. of can buoy. . 



19 miles NE.HN. of Thunder 

 Bay Island. 



19 miles northeast of Thunder 

 Bay Island. 



Gill-net 

 mesh, 



in 

 inches 



Depth, 

 in 



fathoms 



2»i 

 2% 

 2U 

 2% 

 2M 



2M 

 2M 



2% 

 2Yi 

 2% 

 2Vi 

 2% 

 2% 

 2U 



2M 

 2% 



2*A 



35- 50 

 60- 70 

 70- 80 

 70- 80 

 60- 70 



65- 80 

 65- 80 



60- 70 

 65- 70 

 65- 80 

 65- 80 

 65- 80 

 65- 80 

 60- 64 



60- 64 

 60- 65 



60- 70 



Bottom 



Clay.. 

 -_do.- 

 ._do.- 

 ...do.- 

 L ..dp. T 



..do.. 

 ..do-. 



..do._ 

 ...do_- 

 ..do-- 

 ..do.. 

 ...do.- 

 ...do-. 

 ...do.- 



_.do.. 

 ..-do-- 



Weight 

 of lift, 



in 

 pounds 



1,470 

 3,250 

 1, 300 



2,610 

 1,200 



3, 500 

 2, 100 



Per- 

 cent- 



0) 



( 2 ) 



( 2 ) 

 45 

 12 



30 

 10 



18 

 55 

 63 

 30 

 45 

 55 

 10 



10 



5 



i Rare. 



2 Lift not examined or percentage not ascertained. 



