1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 29 



tical ; medial nerve thick ; secondaries distant, floxuous, camptodroine, 

 areas large reticulate." I 



It seems against reason to separate these fragments, which are large 

 ami numerous, and to form a new species. They agree well for the 

 essential characters, the large size of the leaves, the thick medial 

 nerve, the distant secondaries, the areas reticulate as in 876 and 876a, 

 but they differ by the secondaries being stronger at a still more acute 

 angle of divergence, less branched, following upward close to the 

 borders, and the very thick nervilles. The base of the leaves is nar- 

 rowed gradually (as in the fig. 1 of the Fl. Arct., PL xvin), and the 

 medial nerve is quite thick. It is evidently a variety of the species 

 which, as represented by Heer, is extremely variable. One specimen, 

 No. 877a, shows the leaf rounded to a point; the apex is not seen in 

 auy of Heer's leaves. 



Twelve specimens ; Museum number, 2511. 



Magnolia Hilgardiana Lx. 



The leaf finely preserved has the form and the "nervation of the 

 species so that identity appears undeniable. It differs somewhat, 

 nevertheless, by the secondaries somewhat more curved in traversing 

 the areas, and at a somewhat more acute angle of divergence. This, 

 however, is of no importance, as the American specimen has, like that 

 of Mississippi, the secondaries a little more oblique on one side than ou 

 the other. The more important difference is in the lower secondaries, 

 which in the Mississippi leaves are more open toward the base, and 

 this does not appear to be the case in No. 879, of which, however, the 

 base is destroyed. 



Two specimens; Museum number, 2510. 



Magnolia califomica Lx. 



There are five fragments of this species differing slightly from the 

 figures I have giveu of the species in Gold bearing Gravels, pi. vi, fig. 

 7. The characters are, however, well preserved in the much curved 

 parallel secondaries, curving near the borders, and following them in 

 simple areoles. The secondaries are simple; the nervilles very strong, 

 also simple, straight, or undulate. 



Five specimens; Museum number, 2508. 



Laurus socialis Lx. 



Three specimens; Museum number, 2500. 



Cinaamomum ! Scheuchzeri Heer. 



One specimen ; Museum number, 2450. 



Cornus hyperborea Heer. Plate xv, fig 3. (Heer, Fl. Foss. Arct., vol. ii, pt. iv, p. 

 47(5, PI. iv, figs. 3, 4.) 



The description of Heer does not accord with the figures of his species 

 loc. cit. He says: "Leaves elliptical, with few nerves; secondaries 

 emerging at an acute angle of divergence, aerodrome, distant." From 



