GREAT LAKES COREGONIDS 



631 



Table 99. — Numerical expressions of certain systematic characters for 10 specimens of Prosopium 

 quadr Hater ale from Lake Huron, selected according to size and locality 



Field 

 No. 



Locality 



Length 



Sex 



Rakers 



Scales 



L/H 



L/O 



L/D.B 



L/AB 



L/DA 



L/AT 



L/D 



L/W 



D/W 



SD/H 



SD/O 



SA/H 



19 



St. Ignace, Mich.. 



276 



9 



6+10 



84 



5.3 



6.7 



9.5 



11.0 



2.5 



6.8 



4.8 



8.6 



1.7 



2.3 



3.0 



4.1 



69 



Cheboygan, Mich. 



300 



cf 



8+10 



87 



5.0 



6.7 



9.0 



13.1 



2.5 



7.3 



4.7 



7.5 



1.5 



2. 1 



2.9 



3.9 



222 



Alpena, Mich 



245 



Im. t? 



5+11 



86 



5.0 



6.5 



9.6 



12.1 



2.5 



7.2 



5.5 



8.4 



1.5 



2.1 



2.8 



3.9 



330 



do 



241 



Im. 9 



8+11 



93 



5.2 



6.7 



9.4 



13.0 



2.5 



6.8 



4.9 



8.6 



1.7 



2.2 



2.9 



4.0 



431 



do 



288 



cT 



6+11 



90 



4.8 



6.6 



8.8 



12.5 



2.5 



7.2 



5.0 



7.4 



1.4 



2.1 



2.8 



3.9 



1070 



Wiarton, Ontario. 



295 



9 



6+11 



88 



5.2 



6.8 



8.9 



10.8 



2.5 



7.7 



4.7 



7.6 



1.6 



2.3 



3.0 



4.0 



1104 



Kagawong, On- 



316 



9 



7+11 



89 



5. 1 



7.1 



9.0 



13.3 



2.4 



7.0 



4.4 



7.0 



1.5 



2.2 



3.1 



4.0 





tario. 



































1096 



Gore Bay, On- 



363 



9 



6+10 



88 



5.2 



7.2 



9.1 



11.0 



2.4 



6.0 



4.1 



6.8 



1.6 



2.2 



3.1 



4.1 





tario. 



































2497 



Duck Islands, On- 



276 



c? 



5+11 



89 



5.0 



6.5 



8.7 



13.1 



2. 5 



7.4 



4.8 



8.4 



1.7 



2.2 



2.8 



3.9 





tario. 



































2519 



do 



255 



<? 



5+10 



90 



5.0 



6.6 



9.1 



12.7 



2.5 



7.9 



5.2 



8.6 



1.6 



2.2 



2.9 



3.9 



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 



19 



St. Ignace, Mich... 



5.3 



4.3 



4.4 



3.5 



2.9 



2.9 



26.0 



3.4 



3.4 



2.8 



1.9 



2.4 



11 



10 



11 



16 



1.3 



1.2 



7 



69 



Cheboygan, Mich.. 



5.3 



4.6 



4.2 



3.7 



2.8 



3.3 





3.4 



3.1 



2.7 



1.9 



2.3 



12 



10 



11 



16 



1.2 



1.3 



7 



222 



Alpena, Mich 



5.1 



4.0 



4.0 



3.8 



3.0 



3.5 



24.5 



3.1 



3.1 



2.9 



2.0 



2.2 



11 



10 



11 



15 



1.3 



1.3 



7 



330 



do... 



6.2 



4.1 



4.6 



3.5 



3.0 



3.2 



22.7 



3.2 



3.6 



2.7 



2.0 



1.9 



12 



10 



11 



15 



1.2 



1.4 



7 



431 



do 



5.2 



4.4 



4.0 



3.9 



3.1 



3.2 



26.8 



3.2 



3.0 



2.9 



1.9 



2.4 



11 



10 



11 



16 



1.2 



1.3 



8 



1070 



Wiarton, Ontario. . 



6.3 



4.5 



4.1 



3.6 



3.0 



3.1 



25.6 



3.4 



3.1 



2.7 



2.0 



2.0 



12 



11 



11 



18 



1.2 



1.2 



7 



1104 



Kagawong, On- 



5.5 



4.5 



4.3 



3.9 



3.0 



2.1 



27.9 



3.2 



3.1 



2.8 



2.1 



2.2 



11 



10 



12 



16 



1.2 



1.6 



8 





tario. 









































1096 



Gore Bay, Ontario. 



5.6 



4.9 



4.0 



3.7 



2.8 



2.7 



23.0 



3.5 



2.9 



2.7 



2.0 



2.3 



11 



10 



10 



16 



1.2 



1.2 



8 



2497 



Duck Islands, On- 



5.1 



4.2 



3.9 



3.8 



2.7 



3.6 



25.0 



3.2 



3.0 



2.9 



2.0 



2.2 



11 



10 



10 



15 



1.2 



1.3 



7 





tario. 









































2519 



do... 



5.1 



4.2 



4.1 



4.1 



2.9 



3.4 



25.5 



3.1 



3.1 



3.1 



1.8 



2.2 



11 



11 



11 



16 



1.3 



1.3 



7 



Table 100. — Records of the occurrence of Prosopium quadr Hater ale in Lake Superior 



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



preserved specimens examined] 



Port from which nets were set 



Date 



Location 



Method of capture 



Depth, 



in 

 fathoms 



Preserved 

 specimens 

 examined 



Port Arthur, Ontario 



Porphyry Island, Ontario 



Rossport, Ontario 



Batehawanna, Ontario. 



Stannard Rock Reef 



Apostle Islands, Wis 



Grand Marais, Minn... 



Borrowed specimens: 



Lizard Islands, Ontario K 



July 20,1922 

 Sept. 19, 1923 

 Oct. 1, 1921 

 Oct. 4, 1921 

 Aug. 10,1922 



do 



do. 



Sept. 25, 1923 



do 



June 17,1922 

 Aug. — 1923 

 July 12,1922 

 July 17,1922 

 July 18,1922 



Black Bay 



Off shore.. 



Off the town 



Les Petits Ecrits 



Moffat Strait 



Armour Point 



Morn Point 



Armour Harbor 



Moffat Strait 



Batehawanna Bay.. 



On the reef 



South Twin Island.. 

 Devils Track River. 

 In the harbor — 



Pound net 



Hand line 



2%-inch gill net. 



Hand line 



Pound net 



do 



do. 



4J4-inch gill net. 

 2^-inch gill net. 

 Pound net 



2% -inch gill net. 



Seine 



do 



1 

 4 

 4 

 4 

 2 



13-14 



5 

 1 

 14 



3 



3 



l: 

 6 



5 



• Field Museum collection. 



