392 CRUSTACEA. 



of the Down coast, and is likewise occasionally taken in deep water with 

 the di'edge. 



Donaghadee, 8 — 10 fathoms. 



Palcpmon Squilla, — Newcastle, Down, August, 1851. — I have been much 

 interested by looking at these creatures in their native rock-pools to the 

 southAvard 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 Avhen captured. I did not keep them 

 longer. They were several times five or six yards 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 woi'se 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. V. Thompson to an Irish specimen in his 

 collection. 



Ge)2us Pasiph^a. 

 P. Sivado, Risso. 



In the British ^luseum 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. 43-5, [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 184.5, 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 Palmmons. 



