174 Jones AND Kirkpy—On Carboniferous Ostracoda from Ireland. 
Having in the interval from 1866 received, through the kindness of Mr. 
Joseph Wright, F.G.S., of Belfast, the late W. H. Baily, F.G.S., and other 
friends, numerous specimens of Ostracoda (Podocopa) from the Carboniferous 
formations of Ireland, Messrs. Kirkby and Jones have been desirous of putting 
them, together with those already indicated, in a convenient arrangement, so 
that geologists and naturalists in general should be able to form their judgment 
on this branch of Paleontology in Ireland. It is only recently, however, that 
this material has been sufficiently examined for all the species to be determined. 
As some of them appear to be new, and several others are as yet unrecorded from 
Ireland, the following notes and lists of species may be of use to palzeontologists. 
Many of the specimens have been treated more or less fully in some of the 
Memoirs scattered in various publications, such as the Ann. Mag. Nat. Hist., 
Quart. Journ. Geol. Soc., Geol. Mag., Proc. Geol. Assoc., &c. Several 
however, have not hitherto been adequately illustrated, and some are new. Of 
the species and notable varieties there are—belonging to Leperditia, 10; 
Beyrichia, 3; Beyrichiopsis, 2; Kirkbya, 4; Ulrichia, 1; Synaphe, gen. nov., 2; 
Bythocypris, 2; Macrocypris, 1; Argilloecia, 1; Krithe, 2; Bairdia, 7; Cytherella, 
7—altogether 42. The specimens treated of have come from Donegal, London- 
derry, Tyrone, Down, Sligo, Longford, Mayo, and Cork. 
It is proposed to give a concise descriptive and bibliographical account of 
each form, with its range and localities, accompanied by good illustrations where 
necessary. 
Most of the specimens are from two localities; namely, Cultra, near Holy- 
wood, Belfast Lough; and Carland, near Dungannon. In both cases they are 
in the Lower Limestone-Shale. There are also some examples from the “ red 
Carboniferous Limestone,” of Castle Espie, near Belfast, and from other local 
Carboniferous strata. 
Both the Cultra and the Carland shales appear to be rich in Ostracoda, so 
far as may be judged from the small quantities in hand. In all probability 
both localities would well repay further search for these and other microzoa. 
This belief would probably be true of Ireland as a whole; for, though this 
paper more than doubles the number of the smaller Ostracoda previously 
known as occurring in that country, the list is still only a short one when the 
great area and thickness of the rocks are considered. 
The species from Cultra and Carland form a group that is essentially Lower 
Carboniferous. All of them, putting aside the seven new forms, and excepting 
Bythocypris Phillipsiana, var. carbonica, are found in the Calciferous Sandstone 
series of Scotland, or in beds of equivalent position in the North of England. 
And, leaving out Leperditia Okeni and L. acuta, they are confined to Lower 
Carboniferous strata, or to such beds and the lower portion of the Carboniferous 
