98 
SELACHII. 
P. 1405. Ten examples, some abraded and broken. Egerton Coll. 
P. 2597. Type specimen of Bhy modus transversus (Agassiz MS.), 
Davis. This only differs from Copodus prototypus in its 
great lateral elongation, and is thus probably not separable. 
Copodus angulatus (Davis). 
1862. Chafacodits angulatus (Agassiz MS.), Morris & Roberts, Quart. 
Journ. Geol. Soc. vol. xviii. p. 09 (name only). 
1883. Characodus angulatus^ J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i. p. 475, pi. Iviii. figs. 10, 20. 
(?) 1883. Pinacodus gelasimus, J. W. Davis, loc. cit. p. 477, pi. Iviii- 
fig. 23. 
Type. Detached teeth ; British Museum. 
Teeth very' similar to those of C. prototypus, but differing in the 
smaller lateral extension of the root, and in the straighter posterior 
margin, which is often slightly concave. 
This may possibly be the opposing dentition of 0. covnutus. 
Form, ^ Loc, Lower Carboniferous Limestone : Armagh, Ireland. 
Unless otherwise stated, the following specimens are from the 
Enniskillen Collection : — 
P. 2502-3. Typo specimens. 
P. 2504. Ten examples, mostly abraded. 
P. 5326. A perfect tooth, detached from the matrix. 
P. 1410, 11. Three small specimens. Egerton Coll. 
38506 a. Two specimens. Purchased, 1864- 
P. 2508. Type specimen of Pvnacodus gelasimus. This is an ex- 
tremely abraded tooth, and agrees so closely in outline 
with 0. angulatus, that it must be associated with this 
species until the discovery of further evidence renders its 
position certain. 
Copodus (?) cuneatus (Davis). 
1802. Characodus cuneatus (Agassiz MS.), Morris & Roberts, Quart. 
Journ. Geol. Soc. vol. xviii. p. 09 (name only). 
1883. Characodus cuneatus, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i. p. 476, pi. Iviii. fig. 21. 
Type. Detached tooth ; British Museum. 
Teeth narrower in front than behind, and much arched antero- 
postcriorly. Crown thick or considerably bent downwards laterally, 
