Paleozoic Bivalved Entomostraca. 453 
Kirkbya oblonga, J. & K. It is not easy in all cases, how- 
ever, to make out what species are represented by the figures 
in that paper. 
The following are‘lists of the species we have determined, 
with notes on such of the forms as appear to require it. 
1. List of Species from Hurst ( Yoredale Series). 
. Cytherella recta, Jones and Kirkby, Mon. Carb. Entom., Pal. Soc. 
1884, p. 74, pl. vii. fig. 2. 
scrobiculata, J. & K., Mon. Carb. Entom., Pal. Soc. 1884, 
p. 76, pl. vi. fig. 10. 
—— equalis?, J. & K., Mon. Carb. Entom., Pal. Soc. 1884, p. 74, 
pl. vi. figs. 14-16. 
reticulosa, J. & K., Ann. & Mag, Nat. Hist. ser. 5, vol. xviii. 
1886, p. 262, pl. vill. figs. 22, 23. 
sp. ? C. concinna, J. & K., Mon. Carb. Entom., Pal. Soc. 1884, 
p- 7], pl. vi. figs. 9, 12, and 19. 
. Leperditia Armstrongiana, J. & K., Ann. & Mag. Nat. Hist. ser. 5, 
vol. xviii. 1886, p. 253, pl. vii. fig. 1. 
. Beyrichia Bradyana, J.*& K., Geol. Mag, 1886, p. 438, pl. xii. 
ig. 11 
o* 
8, Kirkbya oblonga, J. & K., Ann. & Mag. Nat. Hist. ser, 5, vol. xv. 
1885, p. 181, pl. iii. fig. 5. 
9. permiana, Jones, Ann. & Mag. Nat. Hist. ser. 5, vol. xv. 1885, 
Pulley pleut bel. 
10. —— Ure, Jones, Ann. & Mag. Nat. Hist. ser. 5, vol. xv. 1885, 
p- 189, pl. iii. fig. 19. 
11. Bairdia plebeia, Reuss, Quart. Journ. Geol. Soc. vol. xxxv. 1879, 
p. 569, pl. xxviii. figs. 9-19. 
12 ampla, Reuss, Quart. Journ. Geol. Soc. vol. xxxv. 1879, p. 571, 
pl. xxviii. figs. 20-23, pl. xxix. fig. 3. 
13. subelongata, J. & K., Quart. Journ. Geol. Soc. vol. xxxv. 
1879, p. 578, pl. xxx. figs. 1-1] and 16; Ann. & Mag. Nat. 
Hist. ser. 5, vol. xviii. 1886, p. 267, pl. ix. fig. 44. 
14. ——. brevis, J. & K., Quart. Journ. Geol. Soc. vol. xxxv. 1879, 
p: 575, pl. xxxi. figs. 1-8. 
15. amputata, Kirkby, var., Quart. Journ. Geol. Soc. vol. xxxv. 
1879, p. 576, pl. xxxi. figs. 15-18. 
16, —— Hisingert (Miinster), and var. (Pl. X XI. fig. 1), Ann. & Mag. 
Nat. Hist. ser. 3, vol. xv. 1865, p. 408, pl. xx. figs. 12 a-c; 
Quart. Journ. Geol. Soc. vol. xxxv. 1879, p- 570, pl. xxix. 
fies. 1-10. 
17. Bythocypris corngera, J. & K., var. robusta, nov. (Pl. XXI. fig. 2), 
Ann. & Mag. Nat. Hist. ser. 5, vol. xviii. 1886, p. 251, 
pl. vi. figs. 8, 9. 
18. cuneola, J. & K., Ann. & Mag. Nat. Hist. ser. 5, vol. xviii. 
1886, p. 250, pl. vi. figs. 3-7. 
19. bilobata (Miinster), Ann. & Mag. Nat. Hist. ser. 8, vol. xv. 
1865, p. 409, pl. xx. figs. 10a, b. 
20, Bythocythere Youngiana, J. & K., Ann. & Mag. Nat. Hist. ser. 5, 
. Phreatura concinna, J. & K. ( 
vol. xviii. 1886, p. 268, E ix. fig. 4. 
1, XXI. figs. 3a, 5), Proc. Geol. 
Assoc. vol. ix. 1886, p. 509, woodcuts, figs. 3, 4, 
