124 CANADIAN FOSSILS. 
PuyLiocraptus Anna, Hall. (a. s.) 
Plate XVI, figures 11-16. 
Description.—Consisting of flattened elliptical stipes, which are some- 
times broader above. Radicle mmute: margins celluliferous, the cell-aper- 
tures furnished with long mucronate extensions. Cellules rising from the 
axis, expanding in width, and curving outwards and downwards; the curvature 
diminishing in the middle, while the upper ones are but slightly curved : 
margins of the apertures regularly concave between the extensions of the cell- 
partitions, distinctly striated upon the sides parallel to the margins. Axis 
celluliferous, its width five hundredths of an inch in a specimen of forty- 
three hundredths of an inch in length, the entire width of the specimen 
being twenty hundredths of an inch: cellules in the proportion of from 
thirty-six to thirty-eight in the space of an inch. 
This species is shorter in proportion to its length than either of the 
others ; the individuals rarely or never reach the length of half an inch, 
and vary from one eighth to seven sixteenths of aninch. The test appears 
to be thicker, and the cellules more distinctly marked than in P. angustt- 
folius ; while its smaller size and more closely-arranged cellules distin- 
guish it from the other species. 
EXPLANATIONS OF Figures oF Puyitiocraptus Anna, Hall. 
Puate XVI. 
11. A specimen with the folia obliquely compressed. 
12, 13,14. Individuals showing some varieties of form.. The specimens have all 
been so imbedded that one of the folia has been torn away in the separated 
lamine of shale, leaving an axis marked by the bases of its cellules. 
15. An enlargement of a specimen which has one of the laminew vertically im- 
bedded, and shows the bases of the cells as they recede from the axis. The 
markings at the sides are from the impressions of the folia, except a small 
fragment of one remaining on the left-hand side of the figure. 
16. An enlargement from a specimen where the two lateral folia remain, showing 
the bases of the cells of the folium which has been broken off, in the 
separated laminz of slate. The surface is distinctly striated. 
Formation and Locality—Quebee group ; three miles above the river 
Ste. Anne. 
