186 
calling Professor 
“rhizome ” 
this region. 
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2 
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Wf 
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ire Hy * 104 
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Fia. 6. 
fic containing a skeleton of Steneofiber fossor. 
A weathered portion of a Demone- 
Total length of specimen from horizontal stratum 
a to b, approximately 61 em. 
MEMOIRS OF THE 
CARNEGIE MUSEUM 
Barbour’s statement of having found remains of a rodent in a 
of Demonelix,' the search was vigorously carried on during our stay in 
In a locality, where Demoneliz is found in 
great numbers, one is always sure to find rodent 
(Steneofiber) remains. Considerable pains was 
taken to study these so called plants from all 
possible points of view, and the conclusions 
arrived at are at variance with those of the ad- 
vocates of the plant-theory. 
| It seems reasonable to believe that Demone- 
liz is the cast of a rodent-burrow for the follow- 
ing reasons. Remains of rodents, which possess 
highly developed fossorial characters are found 
inside of the casts. These rodents are of the 
proper size in comparison with the average size 
of Demonelix. I have seen no very small speci- 
mens of the latter exhibiting ithe wonderful 
regularity of form met with in the larger ones : 
such small ones as I have seen cannot properly 
be classified with the typical Demoneliz. 
On the hypothesis that these screws are casts 
of burrows, it would seem likely that in mak- 
ing them the rodents tamped and firmly packed 
the walls of their tunnels. The secretions of the 
animal, and the constant passing back and forth 
would, I think, greatly help to solidify the 
walls, since these habitations might have been 
occupied for a considerable length of time. In 
support of this it may be said that it is seldom 
that articulated skeletons are found in Demone- 
ix, but in the majority of cases the bones are 
seattered (perhaps by the inhabitants of the 
burrow), and quite often only the head is found 
erowded close to the wall, or inside of the rim 
1In passing through Lincoln, Nebraska, on my way East, I saw Professor Barbour who was kind enough to show 
me most of the Demonelix material in the museum. 
the mold of the specimen in which it was found. 
The rodent mentioned by him is about the right size to have made 
It is a Stleneofiber. 
