400 
CRUSTACEA. 
ORDER L^EMODIPODA. 
Genus Caprella. 
C. Phasma , Latr. 
South of Ireland, J. Y. Thompson. 
C. linearis , Latr. 
Found among marine plants collected near Glenarm by Dr. Drum- 
mond, in May, 1836, and subsequently obtained in abundance by Mr. 
Hyndman and myself upon Plumularice, &c., dredged in Strangford 
Lough. 
C. lobata, Mull., Kroyer. 
Specimens attached to zoophytes ( Sertularia chiefly) dredged from 
about ten fathoms on sand near Portaferry, Strangford Lough, Oct., 1839, 
Mr. Hyndman and W. T. 
C. tuberculata, Goodsir. 
Specimens taken with the last. 
Guerin, in his Iconographie, &c., pi. 28, f. 1, represents a species 
which he calls by this name ; it is from the Mauritius (Texte Descrip. 
Crust., p. 24). 
C. acuminifera, Leach. 
I found a few examples of this species living among Corallina officinalis 
in shallow rock-pools between tide-marks at Springvale, Co. Down, in 
July, 1846. 
Genus Proto. 
P. pedatum, Leach. 
North of Ireland, W. T. 
Genus tEgina. 
JP. ? longispina, Kroyer. 
A single individual of this very fine, large, and spinous form was taken 
with the two first-noticed Caprellce. My specimen differs only from that 
represented by Kroyer in having one or two more spines retrally on the 
body : it is wholly red like his, and has retained this colour in spirits to 
the present time. Goodsir’s Caprella spinosa (Edin. New Phil. Journ., 
vol. xxxiii. p. 187, pi. 3, f. 1) approaches very near to this species, if it be 
not the same : it is described as having “ the whole body of a pale white 
colour.” Caprella linearis of authors (already recorded as Irish) was 
taken with this as well as C. lobata and C. tuberculata. 
ORDER ISOPODA. 
Genus Arcturus. 
A. longicornis, Westwood. 
North and East of Ireland. 
