264 
CYCLOSTOMI. 
“ Before publishing a notice of the Irish Cephaloptera in 1835, I referred to 
the R. Fabroniana of Lacepbde, and considered the specimen as having about 
much the same resemblance to it as to the C. Giorna, but preferred adopting 
the latter name. Muller and Henle, in their great work on the ‘ Plagiostomen,’ 
the highest authority extant on the subject (published in 1841), brought the two 
names together* as representing but one species, and adopted for it Risso’s term, 
Cephaloptera Giorna. The Prince Bonaparte has done the same in his Catalogo 
Metodico dei Pesci Europei, published at Naples in 1846. If therefore I have 
been the means of the specimen being ‘ erroneously referred to in most works 
on British Zoology,’ I err in company with the two best authorities in Europe ; 
and, if I be correct, I am indebted to the writer of the ‘Note, &c.,’ under con- 
sideration, for providing by his description and figure better means than I had 
myself done of proving the correctness of my opinion respecting the species in 
question. 
“ The specimen was so imperfect, and in addition so distorted by the pre- 
server, that, although in possession of an accurate drawing of it previous to pub- 
lishing the note in 1835, I was unwilling to have it engraved. The relative di- 
mensions being, for the same reasons, necessarily inaccurate, I abstained also 
from giving them.” 
For description of the following species recorded by Professor M‘Coy, 
see Annals Nat. History, vol. vi. 
Raia radiata, Starry Ray, p. 405. 
Raici intermedia , p. 405. 
Raia microcellata, p. 407, 
ORDER IX.— CYCLOSTOMI. 
The Lamprey, Retromyzon marinus, Linn., 
Is taken in suitable localities in all quarters of the island. 
In the larger rivers connected with L. Neagh it is of regular occur- 
rence. 
A fisherman told me it is common in the Coagh, or Ballinderry river, 
of five pounds’ weight. He had seen some which he believed to be ten or 
twelve pounds ; he says when “ rooting ” they turn over stones (by 
sheer strength, not by suction) of ten to twelve lbs. weight. They go up 
this river not only as far as Coagh, about five miles from Lough Neagh, 
but four or five miles further. The people here would not use them for 
any consideration ; they are so ugly. Newcastle, County Down, Nov. 2nd, 
1851. A fisherman informs me that he once, about two years ago, caught 
four lampreys, the largest of which was eleven inches long, in the tidal 
river here, a considerable way above the bridge. He had not seen or 
heard of them here before. Two persons who rent the fishing of the 
river had never seen lamprey in it. 
May 23 rd, 1851. Retromyzon marinus . A fine adult fish of this species 
2 feet 6 inches long, and in very good condition, taken this evening in 
Conswater, Belfast, was brought me before it was dead. It was seen with 
its dorsal fin above the surface of the water, where about 4 feet deep, 
and was struck by a fisherman under the impression that it was a mullet. 
