392 
CRUSTACEA. 
of the Down coast, and is likewise occasionally taken in deep water with 
the dredge. 
Donaghadee, 8 — 10 fathoms. 
Palcenion Squilla. — Newcastle, Down, August, 1851. — I have been much 
interested by looking at these creatures in their native rock-pools to the 
southward of Bloody Bridge, where, at the extreme of high-water only, 
they derive any new accession of sea- water. They swam about within a 
few inches of me, and both in form and colour were highly attractive. 
They settle (as bees do on flowers) to browse upon the algae ( ceramium 
rubrum),* and with their pretty caerulean claws apparently draw the 
plants to their mouths. 
I brought some home with me, and put them in a pan of sea-water filled 
within two inches of the top. They frequently jumped out of this on the 
table, where they even ran quickly. One of them leaped from the table 
into the pan of water again, which required a leap of above four inches 
in vertical height to clear the edge, the pan being four inches high. 
Their sight is very acute. They are tenacious of life, as I brought them 
in a phial in my pocket for three miles, and they were as active after 
being 24 hours in our house as when captured. I did not keep them 
longer. They were several times five or six yar^s from the pan of water, 
including a leap from the table to the floor of the room. Though this 
leap was nearly three feet, they were nothing the worse for it, but as 
active as ever on being replaced in the water. 
P. varians, Leach. 
A few examples have been procured in Belfast and Strangford Loughs 
by Dr. Drummond and myself. Leach remarks that the Astacus squilla 
of Pennant may be his P. varians. 
P. Leachii, Bell, 
Is the name attached by Mr. J. Y. Thompson to an Irish specimen in his 
collection. 
Genus Pasiphuea. 
P. Sivado, Bisso. 
In the British Museum there is a specimen so named, and labelled 
“ Ireland.” From the donor, the Rev. James Bulwer, I learned that it was 
taken by him in the vicinity of Dublin. 
Genus Cuma. 
Cuma trispinosa, Goodsir. 
Portaferry, Strangford Lough, 1838, Mr. Patterson. 
Genus Alauna. 
? A. rostrata, Goodsir. 
The occurrence of an individual of this species to me at Newcastle (Co. 
Down) in Aug., 1836, was noticed in the Annals, vol. xiii. p. 435, "accom- 
panied by a mark of doubt as to the species. When lately looking over 
some Crustacea dredged from 5 fathoms at the Skerries, on the Dublin 
coast, in the autumn of 1845, by Dr. Ball and Professor Edw. Forbes, I 
was gratified to see several specimens quite similar to the one that I had 
* On bringing some of these algae home to preserve, I found their tops had 
been much injured, — eaten off, I presume, by these Palcemons. 
