34 
VICTORIA MEMORIAL MUSEUM. BULLETIN NO. I 
front is wide and nearly fiat. On the glabella, the pair of 
fiirrows in front of the posterior oblique pair are much stronger 
in both species than is indicated m the original figures. 
A second specimen of this species was found on a tablet, 
labelled as Dalmanites bebryx. This shows the pygidium and 
some of the thoracic segments, but here, too, it is impossible 
to say how much is pygidium. Barrande states that there are 
three or four segments in the pygidium of Harpes, and this 
fragment exhibits 15 segments in all. It is from a much larger 
specimen than the one collected by Dr. Selwyn, and evidently 
when complete had more segments. The genal spines extend 
beyond the pygidium in this specimen also. 
Locality. — Ottawa, Ontario. Label reads u Ottawa River,” 
and is, therefore, presumably from the Cystid zone of the 
Trenton. 
Genus Rumastus, Murchison . 
Bumastus billingsi, Raymond and Narraway. 
Plate III, fig. 12. 
Bumastus billingsi, Raymond and Narraway, 1908. Annals 
Carnegie Museum, Vob IV, p. 250. PL LXI, figs. 1, 2. 
In a collection of fossils, some of them unique, recently pre- 
sented to the Survey by Sir James Grant, is a large and fairly 
complete specimen of this species. It shows very well a 
character not noticed in the original description, namely, the 
shortening of the pleura of the anterior thoracic segments. On 
the first four segments, the outer ends of the pleura are trunc- 
ated, the first being the shortest, and each of the others slightly 
longer, until the fifth segment, which is normal, is reached. The 
truncated pleura are somewhat broader than the others, and 
more convex. 
The free cheeks are not preserved in this specimen, nor were 
they in the types, but from the shortening of the pleura of the 
thoracic segments, it would appear that the genal angles were 
extended, as in Bumastus limbatus of the Chazy, into spines 
which reached at least as far back as the fifth segment of the 
thorax. 
Locality.— This specimen is No. 331, and is from the Trenton 
at Ottawa, Ont. 
