CONTRIBUTIONS TO PALEONTOLOGY. 



99 



UPPER DEVONIAN. 



Catskill Group* 



Aporoxylon. 



Sigillaria simplicitas, Vanuxem. 

 Lepidodendron gaspianum, Dawson.- 

 Psilophyton princeps, Dawsoii' 



Cyclopteris jacksoni, Dawson. 

 Rhachiopteris punctata, sp. nov. 

 cyclopteroides, s. n. 



Chemung Group. 



Sigillaria vanuxemi, Gceppert. 

 Syiingodendron gracile, s. n. 

 Stigmaria exigua, s. n. 

 Lepidodendron chemiingense, Hall. 

 corrugatum, Dawson. 



Lycopodites vanuxemi, s.n. 

 Cyclopteris halliana, Gczppert. 

 Psilophyton princeps, Dawson. 

 Acantho[)hyton spinosum, s. n. 

 Rhachiopteris striata, s.n. 



MIDDLE DEVONIAN. 

 Hamilton Group. 



Syringoxylon rairabile, s. n. 



Dadoxylon hallii, s.n. 



A{)oroxylon. 



Sigillaria. 



Didymophyllum reniforme, s. n. 



Calamites transitionis(?), Gceppert. 



— — inornatus, s.n. 



Lepidodendron gaspianunij Dawson. 



corrugatum, Dawson. 



Psilophj'^ton princeps, Dawson. 

 Cordaites robbii(?;, Dawson. 

 , s. n. 



angustifolia, Dawson. 



Cyclopteris incerta, s. n. 

 Rhachiopteris striata, s. n. 



tenuistriata, s. n. 



pinnata, s. n. 



2. Maine. The only locality in this State that has hitherto afforded 

 fossil plants is Perry, near Eastport, in the eastern part of the State. The 

 plant-bearing rocks are grey sandstones, resembling those of Gaspe, and 

 associated with red conglomerate and trappean or tufaceous rocks, which, 

 according to the recent observations of Professor C. H. Hitchcock,! rest 

 unconformabl}'^ on shales or slates holding Upper Silurian fossils. t I have 

 little doubt that these beds at Perry are a continuation of part of the series 

 observed at St. John, New-Brunswick ; and it is probable that they are 

 Upper Devonian. The following species occur at this place : 



Lepidodendron gaspianum, Dawson. 

 Lepidostrobus richardsonii. Dawson. 



globosus. Dawson. 



Psilophyton princei)s. Dawson. 

 Leptophloeum rhombicum, s. n. 



Megaphyton? 

 Aporoxylon? 

 Cyclopteris jacksoni, Dawson. 



browuii, s. n. 



Sphenopteris hitchcockiaua, s. n. 



3. Canada. Devonian beds holding fossil plants occur in Eastern Canada, 

 in Gaspe, and in Western Canada at Kettle point on Lake Huron. At the 

 former place there is an extensive series of sandstones and shales, regarded 

 by Sir W. E. Logan as representing the whole of the Devonian series, and 

 containing plants throughout, but more abundant in its central portion. II 



* See explanatory note, p. 107. 



t Report on the Geological Survey of Maine, now in the press. 



X See also notices by Dr. Jackson and Prof. Rogers in the ' Proceedings of the 

 Boston Society of Natural History.' 



II Reports of the Geological Survey of Canada : Paper on the Devonian Plants of 

 Gaspe, Quart. Journ. Geol. Society, Vol. xv. 



