REPORT ON FOSSIL FISHES. 65 
matrix by which the details of No. 2 are obscured, forms an insuperable 
obstacle to a thoroughly satisfactory conclusion on the subject. 
But even if we leave the specimen from Glencartholm altogether out of 
consideration, the fragment from Tarras Foot presents us with peculiarities 
which seem to be quite irreconcilable with the characters of any previously 
defined family. We have scales like those of an Acanthodian, but a position 
in the Acanthodide is contradicted by the structure of the fin and internal 
skeleton. The general shape and the disposition of the median fin reminds us 
of the hinder part of the interesting Dipnoan(?) fish Conchopoma gadiforme, 
Kner, from the Lower Permian of Lebach; but in that form, as in ordinary 
Dipnoi, the neural and hemal spines articulate with the interspinous bones, 
end to end, and the squamation is altogether different. It certainly bears no 
perceptible affinity to the Paleoniscide, nor can I assign to it a place in any 
known family, while, until further material may come to light, even its sub- 
ordinal position is altogether problematical. I therefore propose to institute 
for it the new genus Zarrasius and family Tarrasiide, both names being taken 
from the locality in which the more characteristic specimen was found. 
