NEW SPECIES AND A NEW GENUS OF DEVONIAN PLANTS. 
397 
This form may be compared with Annularia longifolia 
Brongt, as figured by Feistmantel.* The leaves are of about the 
same length but are in some cases twice as wide, the length be- 
tween the internodes is also considerably greater. It is also 
similar to A. longifolia Brong. as figured by Lesquereaux. 
R. Kidston makes A. longifolia , Brong. a synonym of A. 
( Casurainites ) stcllata, Schlotheim; and in this he is followed by 
David White; the latter author figures as A. stellata a much 
smaller form than this I have described ; and under the synonym, 
includes A. longifolia , Brong. ; his A. stellata for size agrees with 
Dawson’s A. latifolia; now I have collected Dawson’s species in 
large numbers in the Lower Cordaite shale, but never saw one 
com parable in size with the mutation Leavitti; hence, and for :he 
reason that it occurs at a different horizon from Dawson’s form, 
I must regard it as a different species from Dawson’s, though 
only a mutation of the great Annularia of the Coal measures. 
Horizon and Locality. From a thin seam of shale in the 
Dadoxylon sandstone, a little above the Pseudobaiera bed. Duck 
Cove, Lancaster, N. B. Found, by Mr. A. G. Leavitt. 
At page 516 of Sir William J. Dawson’s Acadian Geology 
Professor C. F. Hartt has given a section of the strata at the 
“Fern Ledges” on the Bay Shore in which he gives the 
Dadoxylon Sandstone an assumed thickness of 300 feet. Con- 
sidering this as the thickness of these sandstones at Duck Cove, 
the following would be the relative position of the beds contain- 
ing the fossils above described to the section studied by Professor 
Hartt. 
Fe 
Dadoxylon sandstone below the plants above described 
about 88 
Dadoxylon sandstone including the seams carrying these 
plants I 2 
Dadoxylon sandstone above these beds about 200 
Lower cordaite shales (part), containing Hartt’s plant beds 140 
440 
* Zittel’s Palaeontology Vol. in (Plants), p. 162. 
