15 
Horizon and Locality. Richmond: Beaverfoot. This species seems 
to range from the Beaverfoot beds where it is found in conjunction with 
Dinortkis into beds in which it is in association with a definitely Silurian 
fauna. It occurs at the Beaverfoot horizon from the Palliser Pass area, 
from the Beaverfoot range near Golden, at 163 feet above the base of the 
Beaverfoot in the Stanford range near the head of Windermere creek, 
and at a locality near Columbia lake, which may be the upper part of the 
Beaverfoot or the lower part of the Silurian. Rocky mountains, British 
Columbia. 
Haly sites pulckellus n. sp. 
Plate III, figures 8, 9 
A massive, growing colony having reticulations with a fine mesh. 
Corallites small, oval, slender in outline, averaging three in 5 mm., width 1 
mm., at the widest part, the whole producing a beautifully delicate chain in 
the cross-section. No intercorallite tubuli. Walls thicker than is usual 
in such a fine species. Tabulae complete, averaging four to five in 3 mm. 
It is most closely related to H. delicatulus , but a comparison of a 
cross-section shows clearly the difference between the oblong, or in many 
cases almost square, outline of H. delicatulus and the beautifully shaped 
oval outline of H. pulckellus. The tabulae, too, are less numerous in 
H. pulckellus. 
Horizon and Locality. Richmond: Beaverfoot. Sinclair gorge, about 
500 feet below bridge west of Park warden’s cabin. 
Halysites cylindricus n. sp. 
Plate II, figures 6, 7 
Massive colonies of a small form of Halysites coral. Meshes very 
fine. Corallites cylindrical, very small, averaging 1 mm. in diameter, 
barely in contact, some free. No intercorallite tubuli, complete rather 
heavy tabulae, about six to seven in 3 mm., a relationship which in the small 
corallites produces a relatively large space. 
Superficially H. cylindricus resembles H. micropora on account of 
the smallness of the corallites, but it is easily distinguished by its cylindrical 
form, its lack of tubuli, and the loose contact of the corallites. The interior 
of H. micropora has not been figured, so that the tabular arrangement 
cannot be compared. It lacks intercorallite tubuli in common with 
H. delicatulus and H. pulckellus , but differs from them in the size and 
shape of the corallites. The tabulae are about the same distance apart 
as in H. delicatulus , but the smaller diameter of the tube makes them 
shorter. A weathered specimen of H. cylindricus presents an aspect quite 
different from any other species, due to the smallness and roundness of the 
corallites and the frequent looseness of contact. 
Horizon and Locality. Exact horizon not known. The lack of inter- 
corallite tubuli would suggest Upper Ordovician. Harrogate, B.C. 
21216 — 2 } 
