224 
The Cheyenne material contained in the 
present collection comes from Champion (Wild- 
cat) Draw, three-fourths mile south of Belvi- 
dere (2222), and hills between Spring Creek and 
Soldier,.4 miles northeast of Belvidere, where 
it is extremely abundant. 
Genus CARPOLITHUS of authors. 
Carpolithus belviderensis Berry, n. sp. 
' Plate XLI, figure 4. 
This species is based on a single character- 
istic specimen, which is entirely distinct from 
anything previously described. It represents 
a large pyriform pedunculate pyxidium 1.8 
centimeters in length and 13.5 millimeters in 
maximum diameter. The peduncle is curved 
SHORTER CONTRIBUTIONS TO GENERAL GEOLOGY, 1921. 
and stout, about 1 centimeter in length. The 
pyxidium is pointed proximad, widest and 
flatly rounded distad. The sides are distinctly 
fluted with twelve or thirteen rounded nodes 
separated by shallow rounded sinuses. The 
ribbing may .indicate parietal placenta or a 
loculicidal habit, although the latter alternative 
appears to be riegatived by the lid. 
It is possible that this conspicuous and char- 
acteristic fruit may not have been a true 
pyxidium and shed its seeds by loosening of the 
lid, as in Eucalyptus, but that it was a capsule 
like that of Papaver and the small parietal 
seeds were discharged through openings be- 
neath the so-called lid, which may represent a 
concrescent stigma. The specimen comes from 
Stokes Hill, northeast of Belvidere (2220). 
