186 JONES AND Kirxspy—On Carboniferous Ostracoda from Ireland. 
17. Leperditia ? amygdalina (M‘Coy), 
‘‘Synops. Carb. Foss. Ireland,” p. 165, pl. xxiii., fig. 8, has not been determined 
by us; but a possible Leperditia (?) like it was observed in another of Sir Richard 
Griffith’s specimens (from Cultra), see p. 43, Ann. Mag. Nat. Hist., ser. 3, vol. 
Xviil., 1866. 
“« Leperditia amygdalina” is comprised in Jones & Kirkby’s ‘Table of the 
Distribution of British Carboniferous Ostracoda,” Quart. Journ. Geol. Soc., 
vol. xlii., 1886, p. 510. 
18. Beyrichia craterigera, Brady. 
1885. Beyrichia craterigera, | Bravy (Jones & Kirkby), Geol. Mag., dec. 3, vol. 11., 
p- 540; 1886, vol. iii., p. 489, pl. xii., figs. 7 a, 6; 
Quart. Journ. Geol. Soc., vol. xlii., p. 511. 
* 
Three or four fairly well preserved individuals are present among the Carland 
Ostracoda, showing the strong overlap of the right valve, the reticulated surface, 
and other features characteristic of this species. 
It is found also in the Lower Carboniferous rocks of Northumberland, West- 
moreland, and Lancashire. 
19. Beyrichia Hibernica, sp. nov. 
(Plate x11., figs. 7a, 7b.) 
Perhaps the most interesting specimens from Cultra are two separate valves of 
a Beyrichia which comes nearer to Beyrichia Nova-scotica, Geol. Mag., dec. 3, vol. 
i, 1884, p. 358, pl. xii., figs. 5, 6 (Jones & Kirkby), than to any other Carboniferous 
species. Although both the specimens are attached to the matrix, the margins 
appear to be clearly shown. 
The larger specimen (fig. 7a) is nearly ;!; inch in length, and subovate in 
general outline; the upper edge is straight, and the ventral and extreme 
margins regularly convex. 
The area of this valve is modified by being raised into four or five lobes and 
bosses, with corresponding furrows or depressions between them, somewhat as 
follows :—Taking the posterior extremity to be indicated by the usual “ gigot” 
lobe, which is large, sub-triangular, and sub-marginal, there is in front of it, close 
to the ventral margin, a smaller lobe or elongated boss; and this is connected 
with a broader lobe that curves up, and terminates in a round boss close to 
the dorsal border; behind the latter boss, and nearer the ‘‘gigot” lobe, is a 
