2 
DEVONIAN FAUNA. 
hinus, is a remarkably beautiful form, and its specimens are strangely different 
from most Devonian fossils in the excellency of tlieir preservation. It is, in fact, 
fortunate that their locality is absolutely certain, as otherwise our rocks would 
never have been credited with producing fossils so delicately beautiful, perfect, 
and free from matrix. 
Phillips described only eight shells from Newton, Barton, or Bradley, and of two 
of these I have been unable to find examples. The number of species is now raised 
to about fifty-five. These are referred to the following genera : — Edmondia (2), 
Allorisma (1), Cypricardinia (4), Isocardia (1), Goniophora (1), Oonocardium (7), 
Megalodon (1), Mecynodon (2), Protoschizodus (1), Nucula (1), Parallelodon (1), 
Modiolopsis (3), Hoplomytilus (1), Myalina (5), Grosseletia ? (1), Mytilarca (1), 
Plethomytilus (1), Posidonomya (1), Rutotia (1), Pterinea (1), Actinopteria (9), 
Leiopteria (1), Pterinopecten (3), Aviculopecten (2), Crenipecten (2), Lyrio- 
pecten (1). 
1. Ordee.— SIPHONID^, Fleming, 1828. 
1. Sub-order.— SINUPALLIATA, d'Orbigny, 1843. 
I. Family. — Anatinid^, Gray, 1840. 
1. Genus. — Edmondia, de KonincJc, 1842. 
Under this heading are included transversely oval, tumid, thin shells, with 
edentulous hinges and narrow external ligaments. They extend from the Silurian 
to the Permian. 
1. Edmondia ccelata, n. sp. PI. I, fig. 4. 
Descriptio7i. — Right valve very long, narrow, ovoid, tumid. Umbo small, 
rounded, incurved, turned forward, and situated nearly at the anterior extremity. 
Escutcheon narrow, indefinite. Anterior margin small, short, convex. Inferior 
margin gently convex. Posterior margin deeply and symmetrically convex. Dorsal 
margin rather short and slightly convex. Contour of back very much rounded, 
arching steeply above, below, and in front, obliquely flattened behind. Point of 
greatest depth somewhat in front of centre. Surface covered by minute, 
