BELLS GRAHAM ISLAND 25 B

the Coldwater river in the Nicola valley, which are also of Tertiary age.
Similar lignitie occurrences were reported, though not seen, in the area south
of Yakoun lake, but these, also, can be of no economic importance.

The rocks of Chinookundl brook, north of Skidegate village, as de-
scribed by Dr. Dawson are ‘‘hard thin-bedded arenaceous clays, grey in
colour, and frequently with bedding planes covered with shining micaceous
particles. There are also hard coarse sandy beds and clayey gravels, hold-
ing well rounded pebbles, associated with argillaceous lignite, and including
trunks and branches of trees which are converted into coal-black lignite
though still retaining their woody texture. The beds on the whole appear
to be nearly or quite horizontal.’’ The description of these beds some-
what resembles that of the Post-Tertiary deposits already described at
different points along the coast.

With the exception of the ledges seen on the coast east of Masset the Ter-
tiary rocks showed but small signs of organic remains. The collections made
in 1875 by Dr. Dawson apparently comprised most of the species obtain-
able at this place, and may here be repeated. The determinations were
made by Dr. J. F. Whiteaves and are as follows:— (Rep. Prog. 1878-79,
p. 87, B.)

Gasteropoda.

Mangelia? sp. indt. One worn specimen.

Nassa, sp. Unlike any of the living species on the N. W. coast.
Lunatia? sp. Test exfoliated.
Trochita or Galerus. Test exfoliated.

Crypta adunca, Sby. One specimen; undistinguishable from the liv-
ing species. Mr. Gabb (Pal. Cal., vol. 2, p. 82) says that this
shell occurs in the Pliocene and Post Pliocene of California.

Lamellibranchiata.
Solen, sp. One fragment of a large species.
Siliqua, possibly the young of S. patula, Dixon. Two examples.

Standella. Very like S. planulata, Con., and 8S. falcata, Gld., but
smaller than either. Several specimens.

Macoma nasuta, Conrad. Two or three specimens. According to
Gabb (Pal. Cal., vol. 2, p. 93) this recent species occurs also in
the upper Miocene, Pliocene, and Post Pliocene of California.

Mercenaria. Mr. W. H. Dall thinks this shell is closely related to his
M. Kennicottt, from Alaska.