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In June, 1897, Prof. Frank C. Baker of Chicago wrote me: "The 

 writer is gathering materials for an illustrated monogroup of North Amer- 

 ican Limnasidasa and desires to obtain as full a set of specimens as pos- 

 sible from different locatitles." A good lot of specimens were sent to him 

 and he said : "The lot is a splendid one, particularly the L. emarginata, 

 which is the finest 1 ever saw." At different times living alcoholic and 

 dry specimens were sent to Prof. Baker and the result of his careful 

 studies were illustrated and published in a Bulletin, Vol. II, of The Chicago 

 Academy of Science, June, 1900. 



In order to obtain all possible information in relation to Maine shells, 

 1 made a special trip to Orono, Waterville, Portland, Boston and Cam- 

 bridge, and was permitted to examine the different collections, but I am 

 sorry to state that at neither of the places visited did I find a collection of 

 the large pond snails of Aroostook. The specimens vary greatly in form, 

 and of the many thousand varieties seen and collected, there are hardly 

 two alike. 



Prof F. C. Baker writes: "No published figures show the wide range 

 of varities in this species***unlike some species, this form does not 'vary 

 according to any particular locality, but the same locality will produce all 

 known varieties. A naturalist fond of making species, could form not only 

 a large number of species but several genera. Anatomically the ani- 

 mals show no such variation but are wonderfully uniform." 



The Limngeas of Fish river lakes are very abundant some years. In 

 1893-4-5-6,#iousands of specimens might have been collected at Square 

 lake inlet, at low water mark. In 1898-9-00, they were not so common. 

 D. E. Johnson, Supt. of Caribou fish hatchery, who had made collections 

 for me several times, informs me that he could only find a few young and 

 some dead shells at the above locality in August this year. 



At Cross lake, specimens were common at the inlet in 1894-6, and 

 this summer, in August or September only a few young shells could be 

 found by me. 



In second Eagle lake or Mud lake (the latter being the common 

 name) A. W. Longfellow stated that specimens were abundant in 1842. 

 Prof. E. S. Morse found only a few dead shells in 1859. John Storey and 

 William Roach of the Caribou fish hatchery, informed me that they col- 

 lected a good lot of specimens in Mud lake in 1898. and D. E. Johnson 

 informed me of a large colony in 1900. This year in August and Septem- 

 ber, 1 collected a good lot of specimens and ai the inlet they were abundant. 

 In Eagle and Portage lakes I have never found them in abundance. 



A colony was discovered in Fish river at Fort Kent in August, 1899, 

 and few specimens were found in the St. John river, one-half mile above 

 Fort Kent on the U. S. side. 



In Aroostook river, just above the Caribou stream, I have collected 

 specimens every season for the past eight years and this is the only colony 

 I have found in this river from Ashland to the boundary line. 



