CIRRIPED A. 
I. PEDTXNCTJLATA. 
Genus Anatifa. 
A. Icecis, Lam. 
Drift timber, Tory Island, Mr. Hyndman. Belfast Bay, W. T. Dun- 
dalk, Mr. Hyndman. Cork Harbour, Mr. Humphreys. Bundoran, Mr. 
Hyndman. 
A. dentata , Lam. 
A specimen of this Anatifa from Magilligan, County Londonderry, is 
in Mr. Hyndman’s collection. It presents every character of A. Icevis , 
Lam., except in the dorsal valve being slightly dentate — a character in- 
sufficient in my opinion to constitute a specific difference. Of 200 speci- 
mens examined in 1847, only 12 were dentate. The peduncle of all was 
of a very dark brown colour. 
A. striata, Lam. 
Magilligan and Portstewart, Mr. Hyndman. Dublin Bay, Dr. Ball. 
Cork Harbour, Mr. Humphreys. West of Ireland, Mrs. Hancock. Said to 
be densely clustered over bark of a pine found floating off Waterford, 
and presented to the Dublin Nat. Hist. Soc. in 1848, by Dr. Farran. 
A. vitrea, Lam. 
In 1831, Mr. Hyndman found vitrea, attached to Fucus vesiculosus, 
and F. nodosus, thrown ashore (and quite fresh) at Magilligan and Port- 
stewart, and subsequently found it on both species at the Giant’s Cause- 
way, as well as on feathers of sea-fowl. 
Dr. Ball, in letter of December 14th, 1844, mentions having got his 
Anatifa on Halidrys siliquosa in 1819, about a mile from Youghal. 
Dr. Farran, in a paper read to the Dublin Nat. Hist. Soc. in Dec., 1844, 
and published in Saunders’ News-letter of Dec. 1 2th, mentions his finding, 
at Roundstone Bay, A. vitrea adhering abundantly to F. vesiculosus. Mr. 
M‘Coy, in his remarks on the paper, mentioned that Mr. Warren in 1838 
presented this Anatifa to the Soc., attached to F. vesiculosus gathered on 
our shores. 
A. sulcata, Lam. 
Of this beautiful striated species, I saw two groups attached to cork- 
wood found at Killiney, in Mr. Warren’s collection. 
“ Found on the shores of the Atlantic, by Mr. O’Kelly.” 
“ Found by Mr. O’Kelly, near Kenmare harbour in Ireland, on a piece 
