— 547 — 
Figs. 1aand 2a, while the configuration of the lobe is indistinctly seen 
in Figs. 1 and 1a. In this figure, as well as in Fig. 2a, the nervation 
is indistinctly observable, a single strand passing towards the base 
of each lobe. The short branchlet springs from this at an acute angle 
just below the sporangium (?) and, arching slightly upward, curves 
outward toward the latter. The nervation in the specimens is not shown 
sufficiently distinctly to make it certain whether the nervilles anas” 
tomose or not, but lam strongly disposed to interpret them as anas- 
tomosing ina rather long, angular mesh. 
The type described above is, in my judgment, homologous with 
the fertile leaf of the cycad. Its relationship to the cycads is strongly 
suggested by the position of the sporangia (?) on the ventral surface of 
the scales which, in most instances, are twisted and upturned so that 
the convex dorsal surfaces look backward and downward. The aspect 
of the organ and the position of the small reproductive bodies at the 
bases of the lobes remind one of the arrangement of the ovules on the 
fertile scale-leaves of some of the living cycads. The sporangia, if such 
they be, are somewhat indistinct in the specimens shown in Tig. 3, 
although they are evidently present on the more distal lobes which are 
rather strongly upward turned. On account of the broad attachment 
and thick texture, I interpret the leaf as ascale leaf; and on account 
of the similarity in the disposition of the reproductive bodies at the bases 
of the marginal lobes, they may be regarded, I believe, as most closely 
related to the Cycadofilices or Cycads. 
The intimate association of the specimens with Gangamopteris 
obovata strongly suggests the correlation of these fertile organs with 
the leaves of this species, a correlation that appears to find support in 
the reticulate aspect of the nervation. 
Locality : northeast of Minas. Horizon 55 meters above the 
granite or 225 meters below the Iraty black shale. Lots. 8586, and 3921. 
GYMNOSPERMS 
CORDAITALES 
Noeggerathiopsis 
Feistmantel, Fl. Gondwana Syst., vol. I, 1879, p. 238. 
The leaves of this genus are readily distinguished from those of the 
genus Gangamopteris by the absence of anastomosis in the parallel 
