GREAT LAKES COREGONIDS 



623 



Table 82. — Numerical expressions of certain systematic characters for 10 specimens of Coregonus 

 clupeaformis from Lake Michigan, selected according to size and 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 



1 



St. James, Mich.. 



483 



10+17 



9 



88 



5.3 



6.7 



8.9 



9.5 



2.9 



6.0 



3.6 



7.9 



2. 1 



2.4 



3.1 



4. 1 



10 



Qros Cap, Mich.. 



427 



10+16 



Im.d 1 



87 



5.2 



6.7 



9.0 



9.8 



2.8 



6.5 



3.9 



8.3 



2.1 



2.4 



3.1 



4.2 



2 



St. James, Mich.. 



406 



11+16 



Im.9 



89 



5. 1 



6.9 



9.2 



10.4 



2.6 



6.8 



4.0 



7.6 



1.8 



2.4 



3.3 



4.1 



2806 



do 



309 



10+16 



Im.9 



80 



4.6 



6. 1 



8.5 



9.6 



2.7 



7.1 



3.8 



7.7 



2.0 



2.3 



3.0 



3.6 



2810 



do 



296 



10+16 



Im.d" 



88 



5.0 



6.5 



9.2 



9.4 



2.6 



7.2 



3.7 



8.4 



2.2 



2.4 



3.1 



3.8 



2815 



do 



293 



10+16 



Im.9 



88 



4.8 



6.6 



8.4 



9.7 



2.5 



6.5 



3.7 



8.3 



2.2 



2.3 



3.2 



3.7 



4566 



Seul Choix, Mich. 



299 



10+16 



Im.cf 



83 



4.7 



6.3 



9.6 



9.4 



2.8 



6.7 



4.0 



7.6 



1.8 



2.2 



3.0 



3.6 



3728 



Port Washington, 



193 



10+17 



Im.9 



83 



4.5 



6.4 



8.4 



9.4 



2.7 



7.1 



4.2 



9.1 



2. 1 



2.1 



2.9 



3.5 





Wis. 



































3731 



do 



204 



10+15 



Im.9 



81 



4.7 



6.3 



8.8 



10.3 



2.8 



7.0 



4.3 



8.8 



2.0 



2.2 



3.0 



3.7 



4270 



Milwaukee, Wis.. 



224 



11+15 



Im.9 



80 



4.8 



6.6 



8.1 



10.2 



2.6 



7.3 



4.0 



8.2 



2.0 



2.2 



3.1 



3.7 



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 



Wt. 













































Lb. oz. 



1 



St. James, 

 Mich. 



5.2 



5.0 



3.5 



3.6 



2.8 



1.9 



10.1 



4.0 



2.7 



2.8 



2.2 



1.9 



11 



12 



11 



16 



1.3 



1.0 



10 



3 11 



10 



Gros Cap, 

 Mich. 



5.4 



4.9 



3.4 



3.7 



2.7 



2.1 



11.2 



3.8 



2.6 



2.8 



2.3 



2.0 



11 



11 



11 



17 



1.4 



1.0 



8 



2 4 



2 



St. James, 

 Mich. 



5.5 



4.9 



3.5 



4.0 



2.4 



2.6 



12.7 



3.6 



2.6 



3.0 



2. 1 



1.7 



11 



11 



11 



17 



1.6 



1.2 



9 



2 3 



2806 



do 



4.8 



4.6 



3.3 



3.2 



2.5 



2.9 



11.3 



3.5 



2.6 



2.4 



1.8 



1.7 



11 



11 



11 



17 



1.4 



1.2 



9 



15 



2810 



do. 



5.0 



4.3 



3.6 



3.7 



2.6 



2.7 



9.7 



3.3 



2.6 



2.9 



2.1 



1.8 



11 



11 



11 



15 



1.5 



1.1 



9 



10.5 



2815 



do. 



5.2 



4.8 



3.5 



3.9 



2.6 



2.5 



10.1 



3.5 



2.5 



2.8 



2.0 



1.7 



12 



12 



11 



16 



1.4 



1. 1 



9 



12 



4566 



Seul Choix, 

 Mich. 



4.9 



4.8 



3.4 



3.6 



2.4 



2.6 



8.7 



3.6 



2.5 



2.7 



2.0 



1.7 



10 



11 



12 



16 



1.5 



1.0 



10 



12.5 



3728 



Port Wash- 

 ington, 

 Wis. 



4.9 



4.0 



3.2 



4.1 



2.6 



2.9 



10.5 



2.8 



2.3 



2.9 



1.8 



1.7 



12 



11 



11 



15 



1.5 



1.2 



9 



2.5 



3731 



do 



5.0 



3.9 



3.4 



4.0 



2.6 



2.7 



10.2 



2.9 



2.5 



3.0 



2.0 



1.7 



12 



12 



11 



15 



1.5 



1.1 



9 



3.5 



4270 



Milwaukee, 

 Wis. 



5.1 



4.1 



3.4 



4.1 



2.5 



3.0 



9.2 



2.9 



2.5 



3.0 



1.9 



1.6 



12 



11 



12 



16 



1.5 



1. 1 



9 



4.5 



Table 83. — Movements of the whitefish in the pound nets of Lake Michigan, according to data gathered 



from the operators of these nets 



Locality 



Nets set 



Depth, 

 in feet 



Appearance 



Maximum 

 abundance 



Disappearance 



Return in autumn 



Port Washington, 

 Wis. 



Michigan City.Ind. 



Grand Haven, 



Mich. 

 South Manitou 



Island, Mich. 

 Northport, Mich... 



Fox Islands, Mich.. 



Traverse City, 



Mich. 

 Beaver Island, 



Mich. 

 Gros Cap, Mich 



Seul Choix Point, 

 Mich. 



April 



April, second week. 



do 



June, second week. 

 May, fourth week. 

 June, second week. 

 May, first week... 

 May, third week.. 



June, first week 



do 



20-60 

 18-30 

 16-20 

 20-30 

 40 

 25-40 

 22-50 

 40-45 

 40-65 

 30-45 



June, first week... 

 May, first week... 

 May, second week. 

 July, first week 



September, second 



week. 

 July, first week 



May, first week... 

 May, third week.. 

 June, second week. 

 June, first week... 



June and July 



Late May and 



early June. 

 July 



do 



October 



July 



June-July. 



Late June and 



early July. 

 July 



.do. 



August 



June 15 



August, first week. 



do 



October, last week. 

 August, first week. 



July, last week 



August, first week. 

 July, fourth week. 

 August, first week. 



October, first 



week. 

 October. 



Do. 



(Nets out.) 



September, first 



week. 

 September.second 



week. 

 September, fourth 



week. 

 September, last 



week. 

 September.second 



week. 



94995—29 22 



