132 ROYAL SOCIETY OF CANADA 
Pacaypiscus HARADAI, Jimbo. 
Plate 3, fig. 6. 
Pachydiscus Haradai, Jimbo. 1894. Beitr. zur kenntniss der Fauna der Kreide- 
form. von Hokkaido, in Dames and Kayser’s Palæont. 
Abhandl., n. s., vol. vi., p. 29, pi. 2 (18), figs. 2, 2, a-b. 
Cfr. also Ammonites Egertonianus (Forbes), Stoliczka. 1865. Cret. Cephal. S. 
India, p. 104, pl. 58, figs, 1-4. 
Nanaimo River, ten miles from its mouth, A. Raper, May, 1893: a 
fine specimen about six inches in its maximum diameter, which agrees 
remarkably well with Jimbo’s description and figures of P. Haradai. It 
differs, however, very little from the type of Ammonites Egertonianus, 
Forbes, as figured by Stoliczka, or from Pachydiscus Suciensis. Its volu- 
tions are compressed at the sides, the periphery is regularly rounded, and 
the umbilicus occupies rather less than one-third of the entire diameter. 
There are eleven large, continuous and distant simple ribs on the outer 
volution, with from one to four rather smaller and shorter ribs between 
them, and the intervals between all of them are finely and transversely 
striated. 
BELEMNITES. (Species undeterminable.) 
Beach at Hornby Island, W. Harvey, 1892: a slender phragmocone, 
forty millimetres long and seven millimetres broad at the larger end. 
The chambers are very numerous and the siphuncle is marginal. 
CRUSTACEA. 
DECAPODA. 
PopocRATES VANCOUVERENSIS. (Sp. nov.) 
Carapace flattened, rectangular, longer than broad, marked by three 
low angular tuberculose, or spinose longitudinal ridges, one in the 
median line, and one near each of the lateral margins, and divided at 
about one-third the distance from the front by an obtusely subangular 
cervical groove, which is rather broad but not very deep. On the an- 
terior portion, or cephalic arch, the lateral longitudinal ridges are well 
developed, and armed with larger and more spinose tubercles than those 
on the corresponding ridges of the posterior portion, one a little behind 
the mid-length on each ridge being larger than any of the others, but the 
central ridge is obsolete. In its piace, just in advance of the cervical 
groove, there is an ovate lanceolate or narrowly spear-shaped area, which 
is elevated at the pointed end anteriorly, shallowly depressed posteriorly, 
and margined with a single row of small tubercles. Immediately in front 
of this area there is a pointed or spinose tubercle, almost in a line with 
