256 THE DEVONIAN FOSSILS OF CANADA WEST. 
imposed layers. The cells are transversely sub-oval or sub-triangular, 
usually with one curved side and two straight sides. In some parts 
of the mass, especially on the edges, they approach the sub-circular 
polygonal form, but usually they are wider in the one direction than 
in the other. The width is in general three-fourths of a line (some- 
times one line), and the height half a line. The bottom of the mass 
is either in part or wholly covered by a thin, smooth, but concentri- 
cally undulated epitheca. 
Fig. 5. Fig. 6. 
Fig. 5. Alveolites Goldfussi.Upper side of a small specimen. 
Fig. 6. Alveolites Fischeri.—One side of a frond. 
This species resembles A. suborbicularis (Lamarck) of the Devo- 
nian Rocks of England, France, and Germany; but in that species 
there is a groove on one side of the cell, and a corresponding ridge on 
the side opposite. I have not been able to detect these characters in 
very well preserved specimens of 4. Goldfussi, and feel satisfied that 
it is therefore a distinct species. 
Locality and formation.—Lot 25, con. 5, Bosanquet. Hamilton 
Shales. 
Collectors—A Murray, J. Richardson. 
ALVEOLITES FiscHEer1.—N. Sp. 
(See Fig. 6.) 
Description.—This species is found in the shape of flattened, pal- 
mate, obscurely branching fronds, celluliferous on both sides. Some 
of the fragments appear to be portions of undulated expansions, two 
to four lines in thickness, and several inches wide. The majority of 
the specimens, however, indicate a palmated form, two to four inches 
