19hX 



Lake Huron and tribut a ries . — Spat/nine run observed in the Au Gres 

 River, Iosco County, Michigan, by Dr. D, S. Shetter (Shetter, 

 19k9). 



19U3 



Lalte Huron and tributaries . — ^A "younc" sea lanprey was taken from 

 a lalce trout caught off Kettle Point, Ontario, on May 22, 

 19h3 (Radforth, 19hh). 



Lal-ce Jlichigan and tributari es ♦ — Spavming run observed in the Platte 

 River, Benzie County, I^Hchigan, by Dr. D, S. Shetter (Shetter, 

 19h9). 



19hh 



Lake Huron and tributaries . — SpaTming runs observed in the PJ-fle 

 River (Ogemavv County?), LSLchigan and the Ocqueoc River, 

 Presque Isle County, Ivichican, by Dr. D, S. Shetter (Shetter, 

 19ii9). 



1916 



Lake Huron and tributaries . — Spaivning run observed in the Ocqueoc 

 River, Presque Isle Coimty, Michigan by Dr. D. S, Shetter 

 (Shetter, 19h9) . An adult sea lanprey, attached to a sucker, 

 ■was taJ^en near Topinabee, lUchigaji, in iJullet Lake, Cheboygan 

 County (Cheboygan River drainage)] identified by Dr. C, ¥. 

 Creaser (verbal coramunication) . 



I9h6 



Lalte Superior and tributaries . — An imiiiature adult, 9.5 inches long, 

 Tiras talcen off Rock Harbor, Isle Royale, in early August, 

 I9U6; identified by Dr, John Van Oosten. A large female, U90 

 milimeters long, vra.s taken off 7/hitefish Point in eastern 

 Lake Superior in December, 19U6 (Creaser, 19U7). 



Tributaries of all basins . — A survey primarily based on interviews 

 ■with commercial fishermen ■vvas made by Michigan conservation 

 officers in tlie late spring and early summer. Spavming runs 

 "ivere reportedly present in 68 IJichigan streams (Shetter, 

 I9I1.9). These latter records are discussed elsevidiere in this 

 report. 



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