70 LL. Lesquereux on the Coal Formations of N. America. 
Stigmaria.—I think that the varieties of Stigmaria anabathra 
Corda, described by M. Géppert, are true species, being generally 
terized species have been found since the report was made. “ 
Sigillaria Brgt.—The distribution of this genus does not ope 
rate identically on the coal-fields of both continents. We have 
few species of the narrow-costate Sigillarie, more than 30 species 
of fn 8° are counted in Europe. We have more of the broad- 
costate forms and especially a large number of species belonging 
to the peculiar section of the smooth or rather uncostate Sigillari@. — 
