188 JONES AND KirxBy—On Carboniferous Ostracoda from Ireland. 
1882. Kirkbya Permiana, . Kirxsy, Quart. Journ. Geol. Soc., vol. xxxvi., p. 588. 
1885. 4 ‘5 . Jones & Kirxey, Geol. Mag., dec. 3, vol. ii., p. 540; 
Ann. Mag. Nat. Hist. ser. 5., vol. xv., p. 177, 
pl. u1., fig. 1 ; 1886, Quart. Journ. Geol. Soc., 
vol. xlii., p 511; 1887, Proceed. Geol. Assoc., 
vol. ix., p. 508. 
Sub-oblong, straight above, curved below; ends bending upwards to make the 
terminal dorsal angles; surface depressed, more or less distinctly reticulate, and 
marked with a subcentral pit. 
In Ireland it has been met with at Cultra. In the shales of the Carboniferous 
Limestone series it is found at many places* in Scotland and the North of England. 
In the Permian rocks it occurs in Durham and Yorkshire; and at Saalfeld, Gera, 
and elsewhere in Germany. 
22. Kirkbya spiralis, Jones & Kirkby. 
1880. Kirkbya spiralis, . . Jones & Kirxsy, MS. Quart. Journ. Geol. Soc., vol. 
XXXVl1., pp. 064, 568, 573, 588. 
1884. 9% * . . Jones & Kirxsy, Proceed. Berwicksh. Nat. Club, 
vol. x., p. 323, pl. 1, figs. 12, 13. 
1885. 95 5 . . Jones & Kirxpy, Ann. Mag. Nat. Hist., ser. 5, vol. 
xv., p. 184, pl. iii., figs. 9, 10; Geol. Mag., 
dec. 3, vol. iz, p. 540; 1886, Quart. Journ. 
Geol. Soc., vol. xlii., p. 511. 
Represented by several individuals from Cultra, most of which are in good 
condition, showing the peculiar concentric or spiral riblets that ornament the 
valves, as well as the central pit or umbilicus. 
This Lower Carboniferous species is known in Northumberland, Cumberland, 
Fifeshire, and Linlithgowshire. 
23. Kirkbya plicata, Jones & Kirkby. 
1880. Kirkbya plicata, . . Jones & Kirxsy, MS. Quart. Journ. Geol. Soe., vol. 
XXXV1L, pp. 576, 578, 588. 
1885. y i . . Jones & Kirxsy, Ann. Mag. Nat. Hist., ser. 5, vol. 
xv., p. 184, pl. ii, figs. 9, 10a, 0. 
43 . . Jones & Kirxsy, Geol. Mag., dec. 3, vol. iii. 
p. 250, pl. vii, figs. la, 6, 2, 3a, 6. 
* For a long list of localities, see Ann. Mag. Nat. Hist., ser. 5, vol. xv., p. 179, 1885. 
1886. v 
