1883. The Mink or Hoosier Frog. 953 
Length trom nose to extremity of tail 4 inches, 
do. of body and head..... 1% do. 
Go. E a ; 25% do, 
ee eA MN T Ss eet a OOR S 3g do 
End of snout to inner canthus........ ts do. 
Bronchial orifice to anus % do 
Breadth of tail at anus........... % do. 
Go. AW CENE... sanee ccs cage aeetee reece ee gens % do 
The entire leg in length...... AM do, 
When the legs first begin to show their development they are 
a reddish-brown tint, and as they become more developed, be- 
come more spotted or banded, the upper surface colored as the 
adult. Thecoloration of this species, as now before me, is so 
different from all others I have seen that it may be looked on as 
specific, and I shall describe this pretty tadpole. The back is a 
deep grassy-green, with numerous sooty spots. From the exter- 
nal canthus to the insertion of the tail is an olive-yellow line, 
more or less pronounced in various specimens. The sides are 
green, with very many punctations of black, and a few spots of 
the same color scattered among them. The abdomen is white, 
and the separation of the colors on the sides is perfectly pro- 
nounced. Lips edged with black. The cheeks are irridescent 
green, and red, with a beautiful silvery tinge. The upper edge of 
the fin of the tail, as also the lower, are well marked with a line 
of black spots. Down the center, on each side, runs a line of 
black spots that continues to the end of the tail, but are variously 
developed in various specimens. The first half of the tail is 
most beautiful, deep, irridescent green, with many red and aurora- 
colored shades, that seem to melt into a silver plate beneath. 
The eye is a perfect hazel brown, or reddish, and, as already 
Stated, is persistent in all stages of this frog. From the angle of 
the mouth, for nearly half an inch, is a well defined, narrow, 
black line. In young specimens, the throat and chin are mottled 
with sooty brown, as in almost all the other tadpoles, which grad- 
ually disappears with growth, and, towards maturity, entirely van- 
ishes, 
This tadpole is extremely active, and the tail much longer in 
Proportion than any of our North American frogs with which I 
am acquainted, and, at the same time, narrower. A few days ago 
T saw several little heads sticking up among the beds of Potamo- 
geton, and after much trouble secured two specimens. I saw one 
rush at, seize a large ephemera that came near it, and swallow it ; 
