The recognition of two distinct types of Stigmariae in the Coal-Measures of Central France led Grand’Eury[586] to institute a new genus, _Stigmariopsis_. This type, which is characterised by a difference in habit as well as by other distinguishing features, is represented by such specimens as those figured by Goldenberg as _Stigmaria abbreviata_, bearing lenticular scars spirally disposed on a cortical surface characterised by irregular longitudinal wrinklings. _Stigmariopsis_ has frequently been found in direct continuity with Sigillarian stems of the Leiodermarian-Clathrarian type, spreading obliquely downwards in the form of rapidly narrowing arms clothed with slender and usually simple appendages; and from the under surface of these arms short conical outgrowths are given off. It is probable, as Solms-Laubach believes, that _Stigmariopsis_ was represented also by long horizontally creeping rhizomes[587] of uniform breadth from which ribless Sigillarian aerial shoots arose as bud-like outgrowths. Grand’Eury, the author of the genus, confined the term to the shorter and more rapidly tapered organs spreading from the base of erect stems; the horizontal rhizomes of all Sigillarian stems he refers to _Stigmaria_. The pith-casts of _Sigillariopsis_ may be recognised by their long vertical ridges and grooves, a feature readily understood by reference to the stem structure. The _Stigmariopsis_ rhizomes though rare in England have been recognised by Dr Kidston[588] in the Middle Coal-Measures of Yorkshire; he has figured a pith-cast very like that illustrated in Solms-Laubach’s Memoir as _Stigmariopsis anglica_. The surface-features of a _Stigmariopsis_ pith-cast are clearly shown on a specimen from St Étienne in the Williamson collection[589]. [Sidenote: STIGMARIOPSIS]