78 THE NAUTILUS. 



Power of Maine, Augusta, 1869," states: "The total count of 

 those [lakes] represented upon the maps as connected with our 

 rivers * * * not including the multitude of small ponds * * * 

 is not less than one thousand six hundred and twenty." Of 

 the above lakes 1568 are located within the State. In the 

 " Fourth Annual Report of the State Water Storage Commis- 

 sion," 1913, page 322, the number of lakes and ponds in Maine 

 is given as 2,222. 



I have examined many of the Maine lakes, and from Moose- 

 head Lake in the center of the State north to Temiscouata 

 Lake, in Quebec, has been my collecting ground for over 30 

 years. 



I have found specimens of Lymnseus emarginatus Say, that 

 seem to compare with Say's description in only one lake; this 

 is located on the east branch of First River between Long Lake 

 and Cross Lake, Aroostook County, in Township XVII, Range 

 4, about lat. 47 10' N., and long. 68 16' W. It is called 

 Mud Lake or Second Lake. Prof. F. C. Baker has examined in 

 his studies of the " Lymnreidffi of North and Middle America," 

 a large series of specimens from Mud Lake, and his opinion is 

 that we have the true type in this lake. If students of shells 

 will agree with me, let us call this the type locality of Say's 

 Lymntzus emarginatus. For a description of this locality see 

 THE NAUTILUS, Vol. XV, page 127. 



Prof. Edward L. Morse visited this locality (Mud Lake) in 

 June, 1859, hoping to rediscover Limnsea ampla of Mighels, and 

 gave me a full account of his trip at the meeting of the Boston 

 Malacological Club, Feb. 10, 1913. Prof. Morse in going to 

 this lake, followed the account given by Dr. Mighels, and I 

 followed the published accounts given by both Mighels and 

 Morse. The fact is Lymncea ampla Mighels is not found in Mud 

 Lake (or Second Lake). 



There is no name on any of the old maps of Mud Lake (or 

 Second Lake). Say's original paper gave the locality: " In- 

 habits Lakes of Maine," and others say "Lakes in northern 

 Maine (Say)." If northern is correct, Mud Lake is the type 

 locality. 



The type specimen of Lymnaa ampla was lost in the fire that 



