246 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



capsule suggests a fully mature and more or less shriveled condition 

 after the discharge of the spores. There is no evidence of the pres- 

 ence of leaves. This moss, if it has been correctly interpreted, suggests 

 an old fruiting plant of the genus Polytriclium, such for instance as 

 the weU-known hair-cap moss, Polytrichum juniperinum, but on 

 account of its poor preservation, it is not possible to be certain of its 

 affinity. The generic reference has consequently been questioned. 



PLAGIOPODOPSIS SCUDDERI Britton and Hollick. 



Plate 12, fig. 2. 



Plaglopodopsis scudderi Britton and Hollick, Bull. Torrey Bot. Club, vol. 42, 

 1915, p. 10, text figs. 1, 2. 



This splendid moss was detected in the Scudder collection by the 

 writer and by him submitted to Mrs. Elizabeth G. Britton and Dr. 

 Arthur Hollick for examination and publication. As it has the fruit 

 preserved in a fair degree of perfection it was possible to determine 

 its affinity with the living species Plagiopus oederi (Gunner) Lim- 

 precht, of the Bartramiaceae, with reasonable certainty. They estab- 

 lished for it the genus Plaglopodopsis, with the following description : 



Plants cespitose, matted together by basal radicles; stem about 1 cm. high, erect, 

 simple, or branching; leaves crowded, spreading, about 2 mm. long by 0.5 mm. wide, 

 lanceolate-acuminate, costate to apex; perichaetial leaves longer, extending to or 

 beyond the capsule; seta terminal, 2-3 mm. long, erect and partly excerted; cap- 

 sule ovoid, 1.5 mm. long by 0.75 mm. broad, erect or inclined, rugose or pUcate; 

 mouth 0.5 mm. broad, too indistinct to show any traces of peristome; calyptra and 

 lid unknown. 



The figure here given (pi. 12, fig. 2) is a new figure of the type- 

 specimen, showing it three times natural size. It is a somewhat 

 clearer figure than that given by Britton and Hollick. 



Family POLYPODIACEAE. 



PHEGOPTERIS GUYOTTn (Lesquereux) Cockerell. 



Plate 12, fig. 1. 



Phegopteris guyottii (Lesquereux) Cockerell, Bull. Amer. Mus. Nat. Hist., 



vol. 24, 1908, p. 76. 

 Sphenopteris guyottii Lesquereux, Kept. U. S. Geol. Surv. Terr., vol. 8 (Cret. and 



Tert. Fl.), 1883, p. 137, pi. 21, figs. 1-7. 



A fine specimen in the Hambach collection, but again without trace 

 of fruit. 



DRYOPTERIS SCANSA Cockerell. 



Dryopteris scansa Cockerell, Bull. Amer. Mus. Nat. Hist., vol. 24, 1908, p. 76, 

 pi. 6, fig. 9; pi. 10, fig. 38. 



A single specimen in the Scudder collection that is apparently the 

 same as the first of the figures given by Cockerell, though not quite so 



