PLATE XII. 
| All the Figures, except fig. 21, are magnified about 25 diameters. | 
Figure 
1. Leperditia inornata, (M‘Coy), right valve, . ° : , 
2. 5 a - (a) carapace showing the left valve, 
5 OF 9p (b) dorsal view, 
” ” 3 (ec) ventral view, . 
8. 53 - e (a) left valve, . 
” ” 5 (6) ventral view, . 
4. Leperditia Wrightiana, sp. nov., left valve, 
De FA 3 i left valve, 
6. Leperditia rhombica, sp. nov., left valve, 
7. Beyrichia Hibernica, sp. nov., (a) left valve, 
‘3 5 7 (4) left valve, 
8. Synaphe annectens, J. & K., left valve, 
: % of . left valve, 
10. 9 i = right valve, . 
is me rr var. confusa, nov., left valve, , 
12. 35 5 J. & K., left valve, showing the interior, 
18. nh 55 of (a) left valve, . 
9p " ¥ (6) ventral edge (reserved), . 
- 95 A (ce) dorsal edge (reserved), 
a os A (d) end view, 
14. . 5, var. confusa, nov., left valve, 
15. oH ”, J. & K., right valve, . 
16. ” 3 rs left valve, 
17. Krithe subreniformis, sp. nov., right valve, . 
18. A "3 is (a) carapace showing the left valve, 
119: 
20. 
21. 
PA or an (6) edge view, 
9 5 var. elongata, right valve, 
Ulrichia bituberculata (M‘Coy), (a) carapace showing the left Hoes 
(6) dorsal edge, 
(ec) ventral edge, 
” ” ” 
Bairdia curta, M‘Coy, (a) left valve, 
” ” ” edge vlew, 
[ 204 ] 
Locality. 
Bundoran. 
Carland. 
” 
” 
Cultra. 
Carland. 
Williamswood. 
” 
Granard, Longford. 
