— 605 — 
No nervation, no traces of bundles in the ribs, no adhering leaves are 
here to furnish evidence of their vegetable origin. This negative evidence 
combines with the anomalies in form and structure of the fragments 
to influence, mein thinking the type may be animal, and if so, pre- 
sumably either vertebrate or crustacean. Yet it must be said that 
neither the plant bed from which the fossils come nor any other near 
horizon has, so far as [am aware, yielded a fragment of bone, scale, 
or tooth. The explanation of these problematic fossils is an interesting 
task awaiting the hands of Brazilian palaeontological students and 
collectors. 
The species described above is named in honor of the chief of 
the Coal Commission, Dr.I. C. White, who, in addition to his long 
and most valuable services in the stratigraphical study of the prob- 
lems relating to coal, oil, and gas, has himself taken am important 
part in increasing our knowledge of the North American Permian 
fiora. 
Locality : Northeast of Minas, Santa Catharina About 55 meters 
above the granite, or 225 meters below the Iraty black shale. 
Lot 3586. 
