50 



Pterophyttum haydenii, Lesqx. in part, American Journal of Science and 

 Arts, loc. tit., p. 91. 



This cone, as remarked above, was at first referred to Pterophyttum hay- 

 denii, from its likeness to that which is described by Stiehler, Paleont., 

 vol. v, p. 76, PI. xv, Fig. d, under the name of P. emestince. With us, as in 

 Germany, the fragment of the cone was found in the same locality as the 

 specimens of the fronds and leaves ; but not in close connection. These 

 casual circumstances do not afford sufficient authority to consider as identical 

 with a branch of Cycadeos a strobile referable by its characters to the pine 

 family. Stems and leaves of Abies or of Araucaria have also been found in 

 the Cretaceous of the Hartz Mountains, the quadersandstein of Blankenburg, 

 as also in the Dakota group. Dunker, in Paleont., vol. iv, p. 180, de- 

 scribes, under the name of Abietites, three species, two of which, A. curvi- 

 folius et A. hartigi, PI. xxxiii, Fig. 1-2, bear leaves more or less curved 

 inward and enlarging upward to an obtuse point. Dr. Newberry, in 

 Notes on extinct floras, p. 10, describes from Sage Creek, Nebraska, frag- 

 ments of branches bearing broadly spatulate obtuse leaves under the name of 

 Araucaria spatkulata, which appear related to Dunker's species. In consider- 

 ing, therefore, the relation of habitat, we have the same authority for referring 

 this cone of Cretaceous age to Conifers as to Cycadea?. The description can- 

 not add much to what may be seen on the figure. None of the scales seem 

 to have been preserved entire ; they are broadly oval or rounded smooth, 

 truncate at the top, an appearance due probably to the erosion or destruction 

 of part of the scales. As the stone wherein the fragment is imbedded is very 

 hard, it was not possible to see anything of the seeds, if there are any, covered 

 by these scales. 



Habitat. — Near Decatur, Nebraska, Hayden. 



Sequoia Formosa, Lesqx., PI. i, Figs. 9 and 9 1 '. 



Couo spindle-shaped, taperiug upward and downward about in the same degree ; scales closely 

 appressed, rliomboidal. 



Sequoia formosa, Lesqx., American Journal of Science and Arts, loc. cit., 

 p. 92. 



The cone is 4^ centimeters long, 1§ centimeters broad in its widest part, 

 below the middle, tapering upward to a point and downward to a short slender 

 peduncle. The scales, as seen Fig. 9 6 enlarged, are rounded in the upper part, 



