No. 419.] THE ANATOMY OF AXOLOTLS. 899 
the opposite end of the state from Amenia, and is the most 
northern locality from which siredons have been reported. The 
coloration resembles the Amenia specimens and is unlike that 
of the forms from Colorado. It is dark above, excepting in a 
narrow tract on each side of the dorsal skin fold. There are 
numerous dark rounded distinct spots, the largest of which 
have a diameter of 4 mm. The spots are scattered over the 
body and post-abdomen and on the upper surface of the head. 
They are more numerous and larger than in the Amenia form. 
The undersides of the trunk and head are several shades lighter 
in color than is the.case in the Amenia specimen. The skin is 
smooth, as in the Colorado specimens. The “coarse and warty - 
roughness" of the Amenia form is not found in the Kenmare 
specimen. 
The appearance of the Kenmare specimen is shown 
in Fig. 6. With the exception of its gills, it is more 
like the Amenia form than it is like the Colorado speci- 
mens. Its dimensions are shown in the table at the end 
of this article. 
The head in the Kenmare specimen is shorter relatively to 
the length of the head and trunk than it is in the Colorado 
forms. This can be seen best by means of a table, thus: 
Ratio of Head to Head and Trunk in 
(2)the Kenmare specimen . . . +» + + * 7 * 29% 
(@) the Amenia specimen |... 0 * otov ? 31% 
(c) the Colorado specimens . - - * : tt * 34% 
(4) the St. Paul specimens |. roseo ACT 27% 
The injury of the head made it difficult to be sure of the 
length of head within 1% or 2% in the Kenmare specimen, but 
€ven so, the head is much shorter in both of the Dakota 
forms than in the Colorado specimens, and more nearly the 
length that is characteristic of the terrestrial forms. Too much 
stress should not, however, be laid on this fact, as the measure- 
ment is based on a single specimen in each case, and some of 
the single ones of the Colorado series have the head as short as 
29%, as in this specimen. 
