Fossils trom Mulde, Gotland. 147 
OSTRACODA 
{limited to genera mentioned in this paper]. 
Family Leperditiide, Jones. 
Subfamily APARCHITINA, nov. 
1. Primitia, Jones & Holl, 1855. 
Subfamily BEyRICHIINZ, nov. 
Kledenia, Jones & Holl, 1886. 
. Bollia, Jones & Holl, 1886. 
. Beyrichia, M‘Coy, 1846. 
i 09 bo 
Family Cytheride. 
. Cythere, Miiller, 1785. 
5 
6. Thlipsura, Jones & Holl, 1869. 
7. Aichmina, Jones & Holl, 1869. 
Section PopocoPpa. 
8. Primitiopsis, Jones, 1887. 
CyPRIDIDA. 
Family Cypridide. 
. Pontocypris, G. O. Sars, 1865, 
Family Bairdiide. 
. Macrocypris, G. S. Brady, 1867. 
. Bythocypris, G. 8. Brady, 1880. 
Family Cytherellidz. 
. Cytherella, Jones & Bosquet, 1848. 
Section 
PLATYCOPA. 
= 
bo 
—___ error nl S| 
ee 
=O Ro) 
T. Rupert JonEs, 
Oct. 18th, 1900. 
Family Leperditiide. 
Subfamily Avarcurriya, nov. 
Primitia, Jones & Holl [1865]. 
Primitia valida, Jones & Holl. 
Primitia valida, Jones & Holl, 1886, Ann. & Mag. Nat. Hist. ser. 5, 
vol. ~ vii. p. 409, pl. xiv. figs. 7 a-c; Jones, 1888, Ann. & Mag. Nat. 
Hiv .. ser. 6, vol. i. p. 405. 
The surface reticulation is well preserved in the Gotland 
specimens ; this feature was also noticed by Prof. Jones in 
