— 451 — 
species are considered by Zeiller as probably Sigillarian. The types 
of this species, in the British Museum, are from Serro Partido, Can- 
diota, Rio Gronde do Sul. Topotypes, collected by Plant, labeled by 
Carruthers, and acquired by Mr. R. D. Lacoe through exchange. 
of specimens are now in the Lacoe Collection of fossil plants in 
the United States National Museum. The specimens described by 
Zeiller are from Arroio dos Ratos, in the same state, and from the 
same mines as those collected by the Coal Commission. 
Locality: Roof of the coal at Arroio dos Ratos near S40 Jeronymo, 
Rio Grande do Sul. About 20 meters above the Irapua coal, or about 
120 meters below the Iraty black shale. Lot. 3593. 
Lepidophloios 
Sternberg, Versuch Fl. Vorwelt., vol. 1, Tent., 1826, p. xiii. 
The genus Lepidophloios includes arborescent Lepidophytes, or 
Palaeozoic relatives of the living Lycopodiales, with successively di- 
chotomizing stems and branches resembling Lepidodendron in ge- 
neral form of growth, but differing in particular by the characters 
of the leaf cushions and leaf scar. The leaf cushions are transversely 
rhomboidal, the horizontal being greater than the ‘vertical diame- 
ter. They are contiguous and very prominent; and in the older 
stems, they are usually grown downward so that the ligular pit, 
on the ventral surface a little above the leaf scar, is well exposed 
and distinct. 
The leaf scars are much elongated horizontally, and have acute 
lateral angles, while the upper and lower borders are rounded. The 
downward flexion of the leaf cushions usually brings the leaf scars 
at the lower edges of the cushion or, in the flattened adult speci- 
mens, they may be partly covered by the imbricated leaf bases, 
though, in the younger slems, they are at or near the lop of the 
leaf cushion. The leaf scar contains three punctiform and rather dis- 
tant cicatricules, the median, or nerve trace, being a little larger than 
the others (parichnos). 
The cones of Lepidophloios are included under the generic name 
Lepidostrobus. They were spirally borne on branches of the form 
known as Halonia. Lepidophloios is represented in Brazil by a single 
species, the Lepidophloios laricinus of Sternberg, the most common 
