THE DEVONIAN FOSSILS OF CANADA WEST. 255 
effuse below. The space between the cells is marked with irregular, 
flexuous, broken strie, four or five in the width of one line; the 
elevated margin at the sides of the cells exhibits from seven to nine 
short oblique ridges or tubercles. In the longitudinal rows, the cells 
are sometimes in contact with each other, and often separated by 
distances equal to half their own length, or a little more. In 7. 
Davidsoni, the cells are not arranged in linear series, and the striae 
are of a different form. 
Locality and formation.—Lot 25, con. 5, Bosanquet. 
Collectors.—A. Murray and J. Richardson. 
Genus ALvEourres.—(Lamarck.) 
The following three species appear to belong to this genus : 
Auveouites RormeEri.—N. Sp. 
Description.—Stems from two to three lines im diameter, usually 
cylindrical, but sometimes sub-palmate, branching. Cells trans- 
versely oval, about half a line wide and one-fourth of a line in length ; 
in general distant from each other from half a line to two-thirds of a 
line in the longitudinal direction of the oy and half that distance 
in the transverse direction. 
In some specimens the cells are not quite so distant as above stated, 
and it may be that these should constitute a distinct species. In 
A. labiosa (Canadian Journal, March, 1859), the cells, when perfect, 
are scarcely one-fourth of a line wide; 4. cryptodens (Loc cit), 18, 
upon the whole, a larger species, with the cells about a line distant. 
The stems appear to bifurcate at an angle of from 50° to 60°; but 
the specimens are not sufficiently perfect to determine this character 
with certainty. 
Locality and formation.—Lot 25, con. 5, Bosanquet. Hamilton 
Shales. 
Collectors.—A. Murray, J. Richardson. 
Atveouites Goiprussi.—J. Sp. 
Description.—This species occurs in irregularly circular depressed 
masses, several inches wide and one or. two inches in height. The 
corallites radiate from a point in the bottom, and the mass, rapidly 
‘increasing in width, has a very obtusely turbinate form, flattened and 
undulated on the top, and apparently composed of horizontal super- 
