GREAT LAKES COREGONIDS 



327 



Fig."13. — Left branchial areh'of 12]forms*of Coregonidae found in the Great Lakes (Nos. 4 and 7 are drawn from the type specimens 

 from Lake Michigan; No. 6 from a Lake Superior individual; the rest are from Lake Huron specimens.) 1. Leucichthys 

 johannse. 2. L. alpense. 3. L. zenithicus. 4. L. reighardi (type). 5. L. nigripinnis. 6. L. , nigripinnis cyanoplerus. 7. L. kiyi 

 (type). 8. L. hoyi. 9. L. artedi. 10. L. nipigon. 11. Coregonus clupeaformis. 12. Prosopium quadrilaterale. 



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