396 
CRUSTACEA. 
G. longimanus , Leach (sp.). Mcera longimana, Leach MSS. 
A single one taken with last: — same as Leach’s unique specimen in the 
British Museum. 
G. punctatus, Johnst., 
I found in a case formed by itself among the branches of Corallina 
officinalis growing in pools between tide-marks at Springvale, Co. Down, 
in July, 1846. The species was determined by comparison of mine with 
those from Berwick presented by Dr. Johnston to the British Museum. 
Genus Amphithoe. 
A. fucicola, Leach (sp.). 
Obtained many years ago at Youghal by Dr. Ball. Leach only appears 
to have noticed this species : he remarks, “ Habitat inter fucos in Dam- 
noniee australis mari rarius.” 
A. rubricate, Mont. (sp.). 
Procured in Strarigford Lough in Oct., 1839, by Mr. Hyndman and 
myself. In shallow rock-pools between tide-marks on the open coast at 
Springvale, Co. Down, I obtained several specimens in July, 1846. Pre- 
viously noticed only as found on the South coast of Devon by Montagu. 
Amphithoe , sp. 
Bangor, Co. Down, 1835, W. T. ; distinct from the preceding and A. 
obtusata, on comparison with the specimens in the British Museum. 
Genus Opis. 
O. typica, Kroyer, Yoy. Scandinavie et Laponie Crust., pi. 17, f. 1. 
Dredged in Strangford Lough, Oct., 1839, and June, 1846 ; on the 
latter occasion picked off algae brought up from a depth of 15 to 23 
fathoms, where they grew on soft sandy ground — several specimens pro- 
cured on each occasion. 
Genus Anonyx. 
Anonyx (Kroyer), sp. 
Several specimens of an Anonyx of various sizes were dredged from 5 
to 6 fathoms’ depth — pure sandy bottom — off Bangor, Belfast Bay, in 
July, 1846, by Mr. Hyndman and myself. They are distinct from and 
more elegant in form, colour, and markings than any of the seven species 
— A nanus, littoralis, ampulla, holbollii, plautus, Edwardsii, tumidus — re- 
presented by Kroyer in such parts of the Scandinav. et Lapon. as were 
in the British Museum Library, in July, 1847.* 
They are all plain or uniform in colour, while mine has conspicuous 
stellate markings ; it is also of a somewhat deeper tint generally, and has 
the antennae longer than any of those named. 
Although a proper description cannot (on account of the state of my 
eyes) be drawn up, some idea may be given of this Anonyx — (which is 
well worthy of the name of elegans ) — by the following note : — length of 
* Since the above was written, Kroyer ’s Natuvhist. Tidssk.,for 1846, has come 
under my notice, and in it ten species of Anonyx, including the seven already 
named, are described (in Latin ) : the additional species are A. gidosus, A. 
minutus f and A. Vahlii. 
