420 
ANNELIDA. 
specially named as they are apparently not constant — was procured be- 
tween tide-marks in July, 1846, at Bangor, Downshire, by Mr. Hyndman 
and myself. A specimen agreeing with this, except in having eight eyes, 
was taken with the species noticed as obtained at Strangford Lough in 
June, but, judging from zoological characters only, I could not think that 
it was distinct from B. purpurea. 
Genus Lineus. 
L. longissimus, Sow. 
Capt. Fayrer got an individual of this species, holding on to a bait 
(the “ buckie,” Buccinum undatum , Linn.) on his long line, when he was 
fishing for cod, off Portpatrick. Having put it in spirits, diluted with an 
equal portion of water, Capt. F. observes “ that the contortions of the 
poor animal were really horrible.” Montagu mentions, that one about 8 
feet long, which he put alive into spirits, instantly contracted to about 1 
foot, at the same time increasing to double the bulk, which originally was 
about the diameter of a crow-quill,” Linn. Trans., vol. vii. p. 73. Judging 
from this, the present specimen must have been very much larger, as in 
its present contracted state it is about 3 feet in length, and from 1^ to 
3^ lines in diameter. Its colour is, as described by the author just quoted, 
“ dusky brown, with a tinge of green, with five [several] faint longitu- 
dinal lines, of a paler colour.” 
A few years ago, a specimen of the Nemertes , about 1 2 feet in length, 
was taken on the opposite coast of Ireland, near the entrance of Strang- 
ford Lough, by my friend, Mr. Hyndman : in this instance it was found 
sheltered beneath a stone, at low water. This remarkable worm, the 
only species of the genus I believe yet discovered, has three generic appel- 
lations attached to it ; being the Lineus of Sowerby, the Borlasia of Qken, 
and the Nemertes of Cuvier. Also taken at Killybegs (6 feet in length 
before being placed in spirits), sent me thence by Mrs. Atherton, W. T. 
Halkey ; Clifden, Dr. Ball. 
Genus Meckelia. 
M. trilineata, Johnst. 
This beautiful worm has been dredged by Mr. Hyndman and myself 
on different occasions in Strangford Lough, and in the open sea at Bally- 
waiter on the Down coast ; in every instance it was free. 
Belfast Bay, Dr. Drummond. 
Genus Prostoma. 
P. gracilis, Johnst. 
I received a specimen of this worm taken at Cultra, Belfast Bay. It is 
larger than Dr. Johnston’s, but agrees in every character with his de- 
scription and figure. 
P. lactiflorea, Johnst. 
With the last species, two examples of this were procured. The eyes 
are as described by Dr. Johnston, and consequently the worm would 
seem to be distinct from Planaria rosea, Mull. My specimens when ex- 
tended are each about two inches in length and of a yellowish flesh 
colour. The characters are ail as given by Dr. Johnston. 
Found also at Bangor, July, 1846. 
