62 Trans. Acad. Sci. of St. Louis 
laid and averaged about 11 by 18 millimeters in size. 
An adult female from Marshall County, Kansas, was dis- 
sected and found to contain fifteen eggs, the anterior one 
being lodged in a position between the front legs. 
On August 13, 1926, the first blue-tailed young speci- 
men was collected by the Kansas University Biological 
Survey in Cowley County, Kansas. 
The Sonoran skink is a voracious feeder when in the 
open, and is very fond of caterpillars, grasshoppers and 
moths; however, it remains in concealment beneath the 
surface of the ground much of the time. In one instance 
a large male was observed devouring a recently laid egg 
of the species, taking it in his jaws and apparently swal- 
lowing it whole. 
Distribution in Kansas.—Hurter (1911) did not report 
this species from Missouri, so Kansas is very probably 
on the eastern border of its range. The map indicates 
that the distribution of E. obsoletus is general over the 
state. As has already been stated, the Sonoran skink 
has been found in company with many other species of 
lizards, and is, perhaps, next to Cnemidophorus sex- 
lineatus, the species with the most diversified habitats in 
Kansas. The difference in the type of habitat selected 
by the two species, EL. obsoletus and C. sealineatus, which 
are sometimes found together locally, can be explained 
as apparently that of soil humidity range, the skink be- 
ing found in damper situations than the race-runner, 
though the general area occupied by each overlaps to a 
great extent as a comparison of their distribution indi- 
cates. 
While making this study the writer has kept separate 
records for young skinks which might be identified as 
E. guttulatus from its original description, and has found 
that when reports of such lizards are plotted on a map, 
