ON SOME POINTS IN THE ANATOMY OF A 
COLLECTION OF AXOLOTLS FROM 
COLORADO, AND A SPECIMEN 
FROM NORTH DAKOTA. 
HENRY LESLIE OSBORN. 
I. THE COLLECTION FROM COLORADO. 
IN a previous article in this journal by the writer ('00) 
reference was made to a collection of axolotls which were 
kindly loaned by Dr. Lee for comparison with the specimen 
. from Amenia, North Dakota, therein described. By an unfor- 
tunate mistake these specimens were located from Montana, but 
in fact they are from Colorado. The material was collected by 
Dr. Thomas G. Lee, of the University of Minnesota, during a 
brief stay in the mining town of Crede, in southern Colorado, - 
during the latter part of August and the beginning of Septem- 
ber, 1896. Having heard mention among the people there of 
“dogfish ” and «fish with legs on 'em," he succeeded in locat- 
ing the wonders in a lake twenty-five miles distant and paid 
the placea visit. He found the lake occupying a narrow valley 
hemmed in between two mountain ridges and dammed back by 
a natural formation, apparently of glacial origin, giving it much 
the appearance of an artificial lake. The elevation of the place 
is about eight thousand feet above the level of the sea. The 
Tuer is very cold. The lake appeared to be very deep. Ata 
distance of about a hundred feet from the shore a line one 
hundred feet in length would not reach the bottom. There 
were water plants growing abundantly in the lake, and among 
them there were areas that were free and open, in which the - 
axolotls were seen coming up from time to time apparently to 
“ cathe. They were then captured with a dip-net. The larger 
Sized ones were found farther out, while smaller ones Were 
reached from the shore. Dr. Lee informs me further that he 
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