120 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



Without seeing the original material it is impossible to arrive at a 

 conclusion regarding its validity. There are some small fragments 

 in the present collection that appear to have the venation of Acrosti- 

 chum and these may represent this species. 



Genus GYMNOGRAMME Desveaux. 



GYMNOGRAMME, (?) species, Engelhardt. 



Gyinnoriramme, (?) species, Engelhardt, Sitz, Naturw. Gesell. Isis in Dresden, 

 1894, Abh. 1, p. 4, pi. 1, fig. 1. 



Description. — This somewhat questionably identified form was 



described from Potosi by Engelhardt and has not been recognized in 



the more recent collections. It was compared with the existing 



Gymnogramme trifoliata Desveaux, a tropical species of Peru and 



Brazil. Gymnogramme has numerous existirig species in South 



America, to which region it is practically confined, and it is well 



represented in the drier regions of the higher Andes from Colombia 



to Bolivia. 



Genus PECOPTERIS Brongniart. 



PECOPTERIS, species, Engelhardt. 



Pecopteris, species, Engelhardt, Sitz. Naturw. Gesell. Isis in Dresden, 1894, 

 Abh. 1, p. 5, pi. 1, fig. 15. 



Description. — A small undeterminable fragment of a fern is de- 

 scribed and figured from Potosi by Englehardt under the above non- 

 commital name, more propOTly restricted to Paleozoic fern-like forms. 

 Its botanical aflBnity is not determinable. 



CONIFEROPHYTA. 



Order TAXALES. 



Family TAXACEAE. 

 Subfamily Podocarpeae. 



Genus PODOCARPUS L'Heritier. 



PODOCARPUS FOSSILIS Engelhardt. 



Plate 15, fig. 2. 



Podocarpus fossilis Engelhardt, Sitz. Naturw. Gesell. Isis in Dresden, 1894, 

 Abh. 1, p. 5, pi. 1, fig. 12. 



Description. — Leaves sessile, linear-lanceolate and falcate in out- 

 line, acutely pointed at both ends. Margins entire. Texture very 

 coriaceous. Length, about 4 cm.; maximum width, in the middle 

 part of the leaf, about 3 mm. Midrib stout, impressed on the upper 

 surface. Secondaries longitudinally parallel, 5 or 6 equally spaced 

 in each half of the lamina. 



