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In Lake Maxinkuckee this is the most common mussel, being found 

 almost everywhere in water from 2 to 5 or 6 feet deep where the bot- 

 tom is suitable. It prefers a rather solid bottom with some admix- 

 ture of sand or gravel, but occurs also even where the bottom is of 

 a rather firm peaty nature as in some places in Outlet Bay. It is, 

 however, rather scarce and widely scattered in such localities. The best 

 beds are found at Long Point, at Farrar's, in front of McDonald's, by 

 the old Kruetzberger pier, and in Aubeenaubee Bay off from the 

 Military Academy. In Lost Lake it was abundant in the large mussel 

 bed below the Bardsley cottage, and a few shells were found in the 

 north end of the lake. 



The Lake Maxinkuckee shells are smaller and thinner than those 

 of the rivers; they closely resemble those of most of the neighboring 

 lakes with which they were compared, such as Twin Lakes, Pretty Lake, 

 Bass Lake, etc. The L. hiteola of Upper Fish Lake are much larger 

 and more like river shells. Compared with specimens of more remote 

 lakes, those of Lake Erie are much smaller, more solid and not stained, 

 the rays being quite distinct. The L. luteola of Lake Pokegama, Minn, 

 are unlike any of those above cited, being large, thick and heavy, fur- 

 nishing excellent button material. 



LcDnpsilis luteola is represented in Lake Maxinkuckee and Lost Lake 

 by two forms; although these forms are well connected by intergrades 

 the extremes are pretty markedly distinct. 



The colony in Lost Lake is composed of compressed, elongate shells, 

 almost as large as those found in rivers, but considerably thinner. It is 

 in the females of this group, and only in part of them, that the greatest 

 variation occurs. The males are not much unlike the ordinary well- 

 known form of the neighboring rivers. The most strongly aberrant 

 females are markedly compressed, and flare out broadly in the post- 

 basal region. The umbones are far forward and they remind one some- 

 what in contour of the marine species, Modiola plicatida. Some of them 

 closely resemble Lampailis radiata of the Atlantic drainage. The Lost 

 Lake mussels of this species are stained a peculiar attractive ash-gray 

 which does not greatly obscure the rays. They are not so heavily en- 

 crusted with marl as are those in the Lake Maxinkuckee beds. Typical 

 Lake Maxinkuckee specimens are dwarfed and stained a deep brown, 

 which obscures the rays. Most of them are thickly-coated posteriorly 



