10 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.73 



Zealand, as well as in Central and South America. This in combi- 

 nation with the supposed fertile specimens agree in pointing to 

 Pteris as the genus to which the fossil should be referred. A 

 large and rather questionable Pteris has been recorded by Engelhardt 

 from the Arauco coal measures (Miocene) of Chile.® 



Occurrence. — Folded tuffs 4 Ian. west southwest of Bernal, about 

 12 miles southeast of Barriloche, Lago Nahuel Huapi, and southeast 

 side of Rio Nirihuao near Casa Piedra, about 12 miles south of Lago 

 Nahuel Huapi, Territory of Rio Negro. 



Cotypes.—Cdit. Nos. 37853, 37854, U.S.N.M. 



Genus FILICITES Schlotheim 



FILICITES species 1 

 Plate 1, Figure 1 



Represented by the single fragment figured, showing a linear 

 pinnule with central midvein and numerous thin subparallel laterals 

 diverging from the midvein at wide angles. The material is too 

 incomplete and poorly preserved to admit of its identification. The 

 margin appears simple, but it may have been finely toothed. The 

 laterals appear simple, but they may have occasionally been dichoto- 

 mous. Naturally, resemblances could be pointed out to numerous 

 unrelated fern genera. The fossil is perhaps most like the pinnules 

 of the existing and wide-ranging Gleichervia {Dicrano'pteris) of 

 South America. 



Occurrence. — Four km. west southwest of Bernal, 12 miles south- 

 east of Barriloche, Lago Nahuel Huapi, Territory of Rio Negro. 



Cat. No. 37855, U.S.N.M. 



FILICITES species 2 



Plate 1, Figure 2 



A poorly preserved fragment of a fern pinna with short pinnulate 

 lobes, rather coriaceous texture, and faint venation. The tips of the 

 segments are frayed and may have been more elongate than they are 

 depicted. 



This fern is undeterminable. It resembles a fragment from the 

 Tertiary of Seymour Island, Graham Land, which Dusen ^ called 

 Pecopteris species 1. It might well be a Dryopteris. 



Occurrence. — Four km. west- southwest of Bernal, 12 miles south- 

 east of Barriloche, Lago Nahuel Huapi, Territory of Rio Negro. 



Cat. No. 37856, U.S.N.M. 



8 Engelhardt, H., Abh. Senck. Naturf. Gesell., vol. 16, Heft 4, p. 643, pi. 2, flgs. 1-4, 

 1891. 



• Dus^n, P., Schwed. Sudpolar-Exped., vol. 3, Lief. 3, p. 19, pi. 4, flg. 5, 1908. 



