260 Malcomson. — Recent Ostracoda of Belfast Lough. 
as well as five fresh water species,* which were found in the shore gatherings, 
hut these had evidently been carried down by streams, and consequently have 
not been included in the present paper. 
Two tables are appended— one giving particulars of depth, locality, nature 
of sea bottom, quantity of material examined, and number of species found m 
each gathering; and the other showing the distribution and comparative 
rarity of each species. 
I am very deeply indebted to G. S. Brady, M.D., F.L.S, for the great 
assistance he has rendered me in the identification of many doubtful specimens, 
and for the valuable information he has given me about some of the more inte- 
resting species. . . 
I must also thank my friend, Mr. Joseph Wright, for his kindness m 
placing his gatherings in my hands, and Mr. David Robertson, F.G.S., of 
Glasgow, for his help in determining some of the critical species. 
The following species deserve special notice : — 
Paracypris polita, G. 0. Sars. Only two or three single valves ^ of this 
species were found, all of them in one locality- viz., Brown s Bay, 
Islandmagee, one of the excellent shore gatherings collected for Mr. 
Wright’s paper by Mr. Gray, M.R.I.A. 
Bairdia inflata, Norman. This species seems to he fairly common in the 
Irish Channel, but only one valve was found in Belfast Lough, and that 
one at White Head, which is almost at the mouth of the Lough. 
Bairdia obtusata, G. 0. Sars. Only two specimens of this very rare 
species were found, both in the “ Protector ” dredgmgs. 
Cythere cribrosa, B. C. and Jt. I have only seen one specimen of this 
species. It has not been previously found in the recent state, hut occurs 
fossil in the Post-tertiary deposit at Bridlington, Yorkshire. 1 
Cythere Cluthse, B. C. and B. Although rare, this species seems to be 
generally distributed in the deeper water. Recent specimens have no 
been previously recorded, but fossil ones occur in several post-tertiary 
deposits* 
Cythere Dunelmensis, Norman. This species seems to inhabit only a 
very limited area in Belfast Lough, as it has been found m only tuo 
gatherings, taken from stations which were close together-™.,' ott 
ltockport, 4 fathoms, and Rockport shore sand. It is usually found m 
much deeper water, and is not a littoral species. I think it is probable 
that the shore sand specimens have been washed up by some curren , 
* Pot&mocypris fu!va .Brady. Cypris MM ,J t -g Cypridopsis villosa 
( j U r{ne ). Candona albicans, Brady , and Candona compressa (Koch). 
(1.) See Post. Tert. Entom. Scotland, p. 146. 
( 2 .) See Post. Tert. Entom. Scotland, p. 153. 
