[WHITBAVES ] VANCOUVER CRETACEOUS FOSSILS 127 
acute, longitudinal, thread-like raised lines. On the dorsal portion of the 
last volution of the spire there are three of these spiral ridges, and upon 
that of the outer volution about seven. Test thin, its inner layer dis- 
tinctly nacreous. 
The exact dimensions cannot be given, but an average specimen is 
estimated to have been eleven millimetres and a-half in length and nine 
in maximum breadth, when perfect. 
Northwest side of Hornby Island, W. Harvey, 1894: four or five 
crushed specimens. 
This interesting little shell is referred to the genus Hunema mainly 
on the authority of Zittel,' who states that Amberleya, Morris and Lycett, 
and Æucyclus, Deslongchamps, are synonymous with it, and that it ranges 
in time from the “ Lower Silurian ” into the Cretaceous. 
NERINÆA DISPAR? Gabb. (Var.) 
Plate 3, fig. 4. 
Cfr. Nerincea dispar, Gabb. 1864. Geol. Surv. Calif., Palæont., vol. i., p. 113, pl. 19, 
figs, 66 and 66 a. 
Shell essentially similar in shape and surface markings to N° dispar, 
but smaller, and devoid of the rounded spiral fold at the base of each 
volution said to be characteristic of that species, also with the longitu- 
dinal ribs apparently obsolete on the lower volutions. 
Hornby Island, W. Harvey, 1894: three specimens. The most per- 
fect of these has seven volutions preserved, with the minute details of 
the sculpture of each quite clearly shown. The three upper volutions are 
marked with small longitudinal ribs which cross the volutions trans- 
versely, but on the three lower volutions these ribs appear to be absent, 
though their absence may be due to the exfoliation of part of the outer 
laver of the shell. 
TESSAROLAX DISTORTA, Gabb. 
Tessarolax distorta, Gabb. 1864. Geol. Surv. Calif., Palæont.. vol. i., p. 126, pl. 20, 
figs. 82 and 82, a-b, 
sf se Whiteaves. 1879. Geol. Surv. Canada, Mesoz. Foss., vol. i., 
pt. 2, p. 123. 
Northwest side of Hornby Island, in the “ Middle Shales or Division 
D” of Mr. Richardson’s Comox section, W. Harvey, 1894: nine specimens, 
most of them preserved in a very brittle shale. 
Cyprma SUCIENSIS. (Nom. prov.) 
Plate 3, fig. 5. 
Shell small, moderately inflated, narrowly subovate and a little more 
than half as broad as long, emarginate at both ends, but much more 
1 Handbuch der Palæontologie, vol. ii., 1884, p. 189. 
