Lorraine Faunas of New York and Quebec 293 
beak. The height of the shell, therefore, increases slightly 
posteriorly, as might be expected, and the ratio of maximum 
height to length is about as 3 to 10. The posterior margin is not 
evenly rounded but is distinctly oblique, making an angle of about 
40 degrees with the cardinal margin, while the nearest oblique 
wrinkles make angles of about 50 degrees. Opposite the posterior 
termination of the umbonal ridge the rounded outline is more 
nearly vertical. The greatest curvature is where the posterior 
outline curves into the basal margin. Umbonal ridge distinctly 
defined on the cardinal side near the beak, becoming rounded 
about 15 mm. from the beak and merging into the general con- 
vexity of the shell posteriorly. Concentric striations most dis- 
tinct along the anterior third of the shell, becoming broader and 
sharply defined posteriorly. Along the umbonal ridge and pos- 
terior cardinal slopes, the concentric striae usually are faint. 
Oblique wrinkles most strongly defined within 13 to 15 mm. from 
the beak, becoming lower and broader posteriorly. 
Specimens of Cymatonota of this type have been found, asso- 
ciated with Trinucleus, also near the head of the Gulf along the 
road leading southwest out of the gully toward the school house, 
about two miles west of Turin (plate III, Fig. 7) . 
Specimens possessing these characteristics occur at Chambly, 
along the Richelieu River, in the province of Quebec, A speci- 
men, labelled Chambly Point. R9., is preserved by the Geolog- 
ical Survey of Canada in the Victoria Memorial Museum, at 
Ottawa, Canada. The handwriting on the label is the same as 
that on the type of Whitella complanata, and the specimen prob- 
ably was collected by James Richardson, It is illustrated by 
Fig. 14, on plate I of this Bulletin, and is numbered 2085. The 
following description may be added. 
Basal margin straight, nearly parallel to the cardinal margin. 
Posterior margin oblique. Concentric striae below and anterior 
to the umbonal ridge. This ridge is distinct anteriorly but be- 
comes more rounded posteriorly. Oblique folds or undulations 
along the hinge-line conspicuous. 
Specimens having the same characteristic occur at the Chambly 
horizon in the section along the Nicolet River, southwest of Ste. 
Monique. Here they are associated in the same rock fragments 
with Rafinesquina mucronata, Catazyga headi, Pterinea demissa, 
and Lyrodesma poststriatum. At this horizon Proetus also is com- 
