GREAT LAKES COREGONIDS 



613 



Table 69. — Numerical expressions of certain systematic characters for 19 specimens of Leucichthys 

 artedi from Lake Michigan over 200 millimeters in length and for 10 specimens under 200 mil- 

 limeters long, selected according to size and locality — Continued 



Size 



Field 

 No. 



H/R 



O/E 



O/M 



O/S 



PV7P 



± V / L 



w/v 



DR 



AR 



VR 



PR 



DC 



AC 



Br 



Over 200 millimeters 



3038 



5. 8 



2.8 



2. 1 



2. 8 



2. 4 



1. 7 



11 



13 



11 



15 



1. 4 



0. 98 



8 



3042 



6. 1 



3.0 



1. 8 



2. 7 



2. 0 



1.5 



10 



11 



10 



15 



1. 4 



1.0 



8 





3046 



6. 0 



2. 9 



2. 1 



2. 9 



2. 2 



1. 7 



10 



12 



12 



16 



1. 4 



1. 0 



8 





3049 



7.0 



3. 0 



2. 1 



2. 8 



2. 3 



2.0 



11 



12 



12 



16 



1. 3 



. 96 



8 





3057 



6.2 



2. 9 



2. 1 



2. 7 



2. 1 



1. 6 



10 



12 



12 



15 



1. 3 



. 78 



9 





4290 



5. 4 



2. 9 



2. 1 



2. 9 



1. 9 



1. 7 



10 



11 



12 



16 



1. 4 



. 94 



9 





4294 



5. 8 



3.0 



2. 0 



2. 9 



1. 9 



1. 6 



11 



12 



12 



16 



1. 2 



. 96 



8 





4307 



6. 1 



3. 0 



2. 1 



2. 9 



2. 0 



1. 7 



10 



12 



12 



15 



1. 5 



1. 0 



8 





4310 



5. 2 



3. 0 



2. 0 



2. 6 



2. 0 



1. 7 



9 



11 



12 



15 



1. 4 



. 97 



8 





4314 



5.3 



2.9 



2.0 



2.8 



2.3 



1.8 



11 



12 



12 



16 



1.4 



.94 



8 





1638 



5. 0 



2. 9 



2. 0 



2. 6 



1. 8 



2. 0 



10 



11 



12 



15 



1. 3 



. 91 



9 





1645 



5.2 



% 8 



2.1 



2. 9 



2.1 



1.8 



11 



12 



12 



16 



1.4 



!92 



9 





2792 



5.2 



2.9 



2.0 



2.9 



2.4 



1.8 



11 



13 



11 



16 



1.3 



.85 



9 





3525 



5.0 



3.1 



2. 1 



2.9 



2.3 



2.0 



10 



11 



11 



15 



1.3 



.91 



9 





3556 



4.6 



3.0 



2. 1 



2.8 



2.0 



1.7 



10 



11 



11 



14 



1.6 



.92 



9 





3558 



5.2 



2.9 



2. 1 



2.7 



1.9 



1.8 



11 



12 



12 



15 



1.2 



.82 



9 





3607 



6.0 



2.9 



2.1 



2.7 



2. 1 



1.5 



10 



10 



11 



16 



1.5 



1.1 



8 





3724 



5.0 



2.9 



2.0 



2.7 



2.0 



1.7 



11 



12 



12 



16 



1.3 



.96 



8 





4585 



6.2 



3.0 



2.1 



2.7 



2.0 



1.8 



10 



12 



12 



16 



1.3 



.95 



8 



Under 200 millimeters 



3102 



5. 1 



2.8 



1.9 



2.6 



2.0 



1. 6 



9 



10 



11 



16 



1.6 



.84 



8 





3228 



5.1 



2.7 



1.9 



2.6 



1.6 



1. 5 



9 



11 



1-2 



16 



1.7 



1. 1 



7 





3236 



5.0 



2.8 



2.0 



2.7 



1.8 



1.5 



11 



13 



12 



16 



1.3 



.79 



8 





3252 



5.0 



2.7 



1.9 



2.6 



1.8 



1.6 



10 



11 



10 



15 



1.5 



.94 



9 





59590 



5.5 



3.0 



2.0 



2.6 



2.1 



1.6 



10 



11 



12 



17 



1.3 



.93 



8 





59592 



5.2 



3.0 



2.0 



2.7 



2.0 



1.7 



10 



11 



12 



15 



1.6 



1.0 



8 





59612 



5.4 



3.0 



2. 1 



2.8 



2.0 



1.7 



9 



11 



11 



16 



1.7 



1.0 



9 





59614 



5.1 



2.8 



2.1 



2.7 



2.0 



1.6 



10 



11 



11 



16 



1.4 



.98 



8 





59617 



6. 1 



3.1 



2. 1 



2.8 



1.9 



1.5 



9 



11 



12 



16 



1.6 



.97 



8 





59690 



4.5 



2.7 



1.9 



2.7 



2.0 



1.5. 



10 



12 



12 



16 



1.5 



1.0 



8 



Table 70. — Records of the occurrence of Leucichthys artedi 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, the abundance 

 of the species in the lift, and the total number of preserved specimens examined] 



Port from which nets 

 were set 



Rec- 

 ord 

 No. 



Date 



Location 



Gill-net 

 mesh, 



in 

 inches 



Depth, 

 in 



fathoms 



Abundance 



Preserved 



specimens 

 examined 



+ 225 

 mm. 



-225 

 mm. 



Lake Huron proper: 

 St. Ignace, Mich.. 

 Cheboygan, Mich 

 Rogers, Mich 



Alpena, Mich 



East Tawas, Mich.. 

 Bay City, Mich 



Harbor Beach, Mich 

 On- 



Duck Islands, 

 tario. 



Tobermory, Ontario 



10 



July 17,1917 

 Sept. 29, 1917 

 Oct. 14,1917 



Aug. 13,1917 

 Sept. 5,1917 

 Sept. 8,1917 



Sept. 10, 1917 



do 



Sept. 12,1917 

 Sept. 14,1917 



Sept. 17,1917 

 Sept. 22, 1917 



Sept. 26, 1917 



Sept. 

 Sept. 

 Nov. 

 Nov. 

 Oct. 

 Oct. 

 Nov. 

 Dec. 

 Mar. 

 Oct. 



Oct. 

 » Pound net. 



24, 1917 

 27,1917 



2. 1917 

 15, 1919 

 22, 1917 

 25, 1917 

 — , 1922 



9, 1917 

 15, 1919 

 18, 1919 



2, 1919 



Off the city 



Point Au Sable 



12 miles E. by N. 14 N. of city. 



Sulphur Island 



Misery Bay 



22 miles SE. by E. A E. of can 

 buoy. 



8 miles E. by N. of can buoy 



(') 



2H 



(0 



13A miles SE. by S. of can buoy.. 

 11 miles SE. % E. of can buoy... 

 24 miles SE. by E. }4 E. of can 

 buoy. 



13J4 miles SE. by S. of can buoy. 

 15 miles SE. by S. 14 S. of can 

 buoy. 



13 miles SE. by S. of can buoy.. 



Can buoy to Sulphur Island 



do 



7 miles ENE. of can buoy 



Off the city 



Off Point Au Ores 



Saginaw Bay at Tobico. 



2H 



m 



iA 



m 



iA 



2H 



2% 

 2% 



(') 

 (') 



0) 



4 



35 



4 

 3 

 30 



20 



15 

 15-17 

 24 



15 

 17 



17 



8-10 

 8-10 

 15 

 15 

 4-8 

 4-8 

 3 



Off Islands. 



31 

 5-10 



Occasional 



(?) 



Only specimens 

 taken in lift. 



Occasional 



Rare 



do 



Only specimens 

 taken in lift. 



do.... 



do 



Rare 



.do-.. 

 .do.... 



Only specimens 

 taken in lift. 



Ctfmmon 



do 



Occasional 



do 



Common 



do 



do 



«- - 



Rare _.. 



Occasional 



Off Plucky Island &A 18-20 do. 



1 Lift not examined or percentage not ascertained. 



