SESSILIA. 
417 
base of the rocks, thus reminding one of coral islands. No other species 
is anywhere (that I looked) intermixed with it. 
Springvale, Down, July 16, 1846, W. T. 
None are found far up the Belfast estuary, where the water is brackish. 
April 29th, 1840. 
B. punctatus, Mont. Every object on the beach at Craigavad, Belfast 
Bay, was profusely covered with the young of this species (or what I con- 
sider as such) wherever they could remain stationary, as for instance in 
the furrows of the clam-shell ( Pecten maximus ), though on the elevated 
ridges none rested. They were so young (l-20th of an inch in length) as 
to give a beautifully beaded appearance to the furrows of this shell. I 
have similarly remarked them in the spring of the year covering over every 
object on the beach at the island of Ireland’s Eye, on the coast of Dublin. 
The young as noted here on April 19, 1835, is the Lepas convexula , Penn. 
I subsequently saw that Dr. Johnston was also of that opinion (Berwick 
Club Proceedings). 
B. punctatus, April 14, 1848. 
I brought some on stones and limpets here from Cultra, for the pur- 
pose of keeping them until they would produce young. From the first 
day I brought them home — in a large botanical box packed in wet Fuci — * 
they threw off the shuttlecock-like exuviae in quantity, but these only 
during the first week. 
Sept. 29th, 1848. 
I examined a great number of Balani this evening, in reference to the 
growth made by them during the present season, and found it to average 
3 lines diameter at base — the largest 4 lines. I saw a few minute ones 
only 1 line in diameter, implying that the species continued to breed until 
lately ; these were not more, probably, than four weeks old. The young 
of the year are mdelibly marked from the older ones, by their pure white- 
ness and fresh appearance. Judging from the size of this year’s speci- 
mens, and of the older on the same stone, I am of opinion that the term 
of life of the species is two years ; but another year’s examination (if I 
live myself) will enable that point to be determined. Nearly all the adults 
on the rocks from which Mr. Darragh* and I took specimens in spring are 
dead, with the valves washed away, and the outer shell only remaining. 
This is the case with 9-10ths of the adults which I saw living on the shore 
here in spring. 
July 3rd, 1848. 
I measured several Balani on a large stone, with the view of ascertain- 
ing their rate of growth. 
Sept. 30th, 1848. 
Those of 2i lines diameter and upwards then, were now 4f, the 
maximum size of the species on the stones examined to-day. 
B.Jistulosus, Lam. 
Magilligan and Dundalk, Mr. Hyndman. 
Bocks below Bantry Bay, rare, Turt. Cat. 
Cork Harbour, Mr. Humphreys. 
B. Alcyonii, Turt. (sp.), 
Balani adherent to the tube of an annelid ( Syllis armillaris ?) dredged 
off St. John’s Point, Co. Down, 15 fathoms, by Mr. Hyndman, I take to 
* The Curator, Belfast Museum. — Ed. 
