ON THE FAUNA OF IRELAND. 399 
Ireland. Great Britain. 
0? Myliobatis Aquila, Cuv. 
Cephaloptera Giorna, Risso. 0 
Of our desiderata in this family, R. marginata and R. radi- 
ata are rare species, and only of occasional occurrence, the 
former on the English; the latter on the Scottish coast. Of 
R. microcellata and Myliobatis Aquila, not more than two 
or three British examples are on record. Raia intermedia is 
one of Dr. Parnell’s recent additions from the Frith of Forth. 
Raia clavata, R. Batis, and R. maculata are taken from 
north to south of Ireland; the first is the most common on the 
north-east coast. R. Oxyrhynchus is included from being no- 
ticed in Smith’s History of Waterford. R. chagrinea and 
R. radula are additions made to our catalogue by the Ordnance 
Survey, and have both been taken on the north-east coast. 
In contributing these species Captain Portlock remarks, that 
“the former seems to take the place of R. Oxyrhynchus on the 
northern coast,” and that of R. radula he lately saw a speci- 
men which was procured in Dublin Bay. The Torpedo, of 
which I have seen Irish specimens, is identical with that from 
the coast of France, figured by Walsh in the Philosophical 
Transactions ; and which in the present confused state of the 
genus, it might be desirable, for the sake of distinction, to term 
Torpedo Walshii*. Cephaloptera Giorna has a place in the 
general British catalogue from a single individual taken on 
the southern coast of Ireland. The Rays are less known in 
Ireland than most other fishes, in consequence of their being 
rarely brought to market, and when so to their being in an im- 
perfect state. 
Order 9.—CycLostTomt. 
Fam. Petromyzide. 
Ireland. Great Britain. 
Petromyzon marinus. ZL. + 
BS fluviatilis, Z. + 
bs Planeri, Bi. + 
Ammocoetes branchialis, Cuv. + 
Myxine glutinosa, Z. + 
In this family Ireland possesses all the British species. 
P. marinus ascends several of the rivers around the coast. 
P. Planeri occurs from north to south, and is more common 
than P. fluviatilis. Ammocoetes branchialis is likewise widely 
distributed. Myxine is said by 'l'empleton to have been found 
at Carrickfergus. 
* For a particular notice on this subject, see Annals of Nat. Hist. vol.v. p. 292. 
