New and Little Known American Paleozoic Ostracoda. 209 
belongs to the last genus, then I should regard my specimen as a 
left valve, and the straighter edge as the ventral. 
Position and locality: In England, a Lower Carboniferous fos- 
sil; in America, in the Warsaw beds of the St. Louis group, at 
Columbia, Ill. 
CYPRIDINA HERZERI, 0. Sp. 
Plate XIV, Fags. 09. a, 6, €. 
Size: Length, 1.4 mm.; height, 0.7 mm.; thickness of left valve, 
0.47 mm. 
Valves strongly convex, suboblong, highest in front of the mid- 
dle; dorsal side arched, nearly semi-circular, the antero-ventral 
extremity prolonged beak-like; ventral! edge moderately convex 
except at the anterior end, where it forms the concave lower side 
of the beak-like prolongation; posterior end rather narrowly 
rounded. Surface smooth; dorsal and ventral edges of left valve 
bent inward as though they might have been overlapped by the 
right valve. 
The genus Cypridina, Milne-Edwards, is represented by numer- 
ous living species in the Pacific and Indian Oceans, and in the 
fossil state chiefly in the Carboniferous deposits of Europe. The 
present species is, so far as I am aware, the first of the genus 
noticed in American rocks. I name it after Rev. H. Herzer, now 
of Berea, O., who was the first to awaken in me the latent love for 
nature that has since grown almost to a passion, and become an 
inexhaustible source of keenest enjoyment. 
Position and locality: Near the top of the Waverly series ( Keo- 
kuk horizon), at Richfield, O. 
CYTHERELLA OVATIFORMIS, N. sp. 
PIGMEENV LL. FIGS: 2. Aa. 05. C: 
( Fig. 3; Right valve: length, 0.67 mm.; height, 0.43 mm. 
Size : \ Hae as se eS as oe oy ia os O.42) = 
Stag leone g 76" oA OsOm a nea? On Samar 
Carapace slightly elongate, but almost regularly oval, com- 
- pressed convex, with point of greatest thickness near the posterior 
end. A very faintly impressed or merely discolored central spot 
in each valve. Interior of the large (right) valve with a distinct 
