138 TRANSACTIONS OF THE [MAR. 17, 
LEPERDITIA (7) MINOR, n. sp., Pl., viii., figs. 4 a and b. 
Test broadly oval, with a straight hinge-line; moderately 
convex; the two ends of the valve make obtuse angles with the 
hinge-line. There is a shallow furrow extending from near the 
anterior end of the valve toward its middle; at the end of the 
furrow is a small tuberculous elevation. 
Sculpture. This consists of deep, rather distinct pits as in 
L. Steadi, which this species resembles in form, but it is much 
smaller. 
Size. Length 24 mm.; height of the valve nearly as great. 
Horizon and locality. Sandstones at the top of Assise 3. 
Scarce. 
LEPERDITIA (?) PRIMAVA, 0. Sp., Pl., vili., figs. 6 a and b. 
Only the right valve is known; this is oval and has a straight 
hinge-line two-thirds of the length of the test. The valve is 
somewhat pointed at the hinge in front, and rounded from the, 
hinge behind. A scar in the centre of the valve where the test 
is broken away may indicate the place of the adductor muscle. 
Sculpture. A portion of the carapace preserved shows a very 
fine punctation. 
Size. Length 54 mm.; width 4 mm. 
Horizon and locality. Sandstones of Assise 3 (lower part), 
Hanford Brook. Rare, 
PHYLLOPODA? 
LEPIDETLA:+ 
Trans. Roy. Soc. Can., vol. iii., p. 61. 
LEPIDITTA SIGILLATA, Pl. viii., fig. 8. 
Trans. Roy. Soc. Cans., vol. xi., p. 98, pl. xvii., fig. 1. 
This species was found in the Sandstones of Assise 3. 
TRILOBITA. 
PROTAGRAULOS n. gen. 
A small trilobite related to Agraulos and Holocephalina by its 
general form, occurs sparingly in sandstone layers of Band bd. 
Glabella depressed to the level of the cheeks, scarcely traceable 
except at the posterior end. Cheeks slightly arched down at 
the front and sides. Eyelobes long. Anterior extensions of the 
facial sutures approximated. 
* — Little scale. 
