266 Dr. R. H. Traquair on Fossil Fishes 
ment that the scales are granulated, do remind us of the fish 
under consideration, yet so little is known of the structural 
details of the Australian fish, that all evidence of generic 
identity is wanting. As far as Sir Philip Egerton’s descrip- 
tion and figures go, however, the head of Cleithrolepis would 
seem to have been much smaller in proportion, the vertical 
rows of scales much more numerous, and the articulating rib 
on the anterior margin of the inner surface of each scale very 
considerably stronger. On the whole, I think it is better to 
bestow a new generic title on the present fish ; and accordingly 
I propose for it the name Wardichthys*, coupled with the 
specific designation cyclosoma. 
WARDICHTHYS, gen. et sp. nov., Traquair. 
Body flat, nearly circular, back very highly arched; dorsal 
and anal fins small, opposite, the former arising much behind 
the culminating point of the rounded dorsal arch and extend- 
ing to the tail-pedicle. Pectoral, ventral, and caudal fins 
unknown, the latter probably heterocercal. Scales ornamented 
externally with fine tubercles, which often coalesce into short 
transverse ridges; lepidopleura weak. Snout short, rounded ; 
orbit well forward ; cranial bones ornamented by fine flexuous 
ridges or strie. 
Wardichthys cyclosoma.—The only known species ; and of 
it, as yet, only one specimen has been obtained, from the 
Lower Carboniferous shales of Wardie (Newhaven), on the 
Frith of Forth, near Edinburgh. 
Ill. Rhizodus Hibberti, Agass., sp. 
A specimen of Rhizodus Hibberti, Agass., sp., from the 
blackband ironstone of Gilmerton, recently acquired by the 
Edinburgh Museum of Science and Art, throws some addi- 
tional light on the structure of this remarkable and gigantic 
fish, concerning which so little is yet known in spite of the 
comparative abundance of fragmentary remains. It is a 
fragment of what would apparently have been a most magni- 
ficent and truly unique specimen, had the whole of it been 
obtained ; as it is, it shows a portion of the head, shoulder, 
and anterior part of the body of an example of moderate, 
or rather small size, for a Rhizodus at least. The entire 
* In honour of Mr. J. Ward, of Longton, Staffordshire, to whom I 
am indebted for much valuable assistance in the study of Carboniferous 
fishes. 
