198 Jones AND Kirkpy—QOn Carboniferous Ostracoda from Ireland. 
39. Bairdia submucronata, Jones & Kirkby. 
1867. Bairdia mucronata, Reuss, Jones & Kirxsy, Trans. Geol. Soc. Glasgow, 
var. submucronata, vol. i1., p. 222. 
1879. Bairdia submucronata, Jones & Kirxpy, Quart. Journ. Geol. Soc., vol. 
Xxxv., p. 572, pl. xxix., figs. 12-18; 1885, 
Geol. Mag., dec. 3, vol. ii, p. 540; 1886, 
Quart. Journ. Geol. Soc., vol. xlii., p. 513; 
1887, Proceed. Geol. Assoc., vol. ix., p. 512. 
Carapace sub-oval, with one end (posterior) eccentrically acute, the postero- 
ventral margin being much produced, with a more or less hollow curve above it, 
as usual in Bairdia. Rarely the anterior extremity has the Bairdian dorsal slope 
in front of a rather flat hinge-line. 
Found at Castle Espie. Not rare in the Carboniferous Limestone of Scotland, 
England, and North Wales. 
Some varieties have an approximate resemblance, but merely as to outline, to 
certain forms of Beecherella, Ulrich, 1891. 
40. Bairdia subelongata, Jones & Kirkby. 
1867. Bairdia subcylindrica Jonus & Kirxsy, Trans. Geol. Soc. Glasgow, vol. ii., 
(Miinster), p- 221. 
1879. Bairdia subelongata, . Jones & Kirxpy, Quart. Journ. Geol. Soc., vol. xxxv., 
p- 973, pl. xxx., figs. 1-11, 16; 1880, Quart. 
Journ. Geol. Soc., vol. xxxvi., p. 587; 1885, 
Geol. Mag., dec. 3, vol. i, p. 540; 1886, 
Quart. Journ. Geol. Soc., vol. xlii., p. 5138; 
1887, Proc. Geol. Assoc., vol. ix., p. 512. 
Subcylindrical ; rounded in front; acute at the postero-ventral end. Dorsal 
and ventral borders generally parallel, though varying slightly as to curvatures in 
individuals. 
Common in the Carboniferous Limestone series of Scotland; found also at 
Great Orme’s Head, North Wales, and at Castle Espie. 
