wellburx : fossil fish found in the millstone grits. 
Explanation of Plate LX. 
Fig. 1. Acrolepis Hopkinsi McCoy. Head, natural size. P. — 
Parietals. F. — Frontals. E. — Ethmoid. Sq. — Squa- 
mosal. SO. — Supro orbital. Or. — Orbital region. 
PMx. — Premaxilla? crushed backwards into orbit. 
Mx. — Maxilla. Most of the bones show the "tuber- 
cular ornamentation" in impression. From the Mill- 
stone Grit, Wadsworth Moor. Specimen in the 
Woodwardian Museum, Cambridge. 
Fig. 2. Ac7'olepis Hopkinsi McCoy. Part of under surface of 
head. Br. — Branchiostegal rays, the "tubercular 
ornamentation " shown in impression. ICl. — Infra- 
claviculars. CI. — Clavicles. From Millstone Grits, 
Wadsworth Moor. Specimen in the Woodwardian 
Museum. 
Fig. 3. Acroleins Hopkinsi McCoy. Part of body showing scales 
and part of left clavicle ? (CI.). 3a. Flank scale 
enlarged. Sb. Under surface of scale. From Mill- 
stone Grit, Wadsworth Moor. Specimen in the 
Woodwardian Museum. 
Fig. 4. Acanthodes Wardi Egerton. Fragment of fish. P.F.S. — 
Pectoral fin spine. V.F.S. — Ventral fin spine. V.F. — 
Part of ventral fin. A. F. S. — Anal fin spine. 
D.F.S. — Dorsal fin spine. S. — Scales. 4a. Group of 
scales magnified. From the Millstone Grit, Eccup. In 
the author's collection. 
Fig. 5. Acanthodes Wardi Egerton. Fin spine (pectoral ?) natural 
size. From the Millstone Grit, Sowerby. In the 
author's collection. 
Fig. 6. Cladodus [Mirahilis Agassiz ?). Imperfect tooth magnified. 
From the Millstone Grits, Wadsworth Moor. Speci- 
men in the Woodwardian Museum. 
Note.— Unfortunately it is only since the completion of my 
paper that I have, through the kindness of Prof. T. McKenny 
Hughes, F.R.S., and Mr. F. R. C. Reed, M.A., had the pleasure 
of seeing and figuring the above specimens. 
