332 Transactions of the Society. 



Observations. — There is a Carboniferous species which somewhat 

 resembles the present form in a general way, viz. Bythocypris 

 antiqua * from the Lower Carboniferous of Northumberland. That 

 species, however, has a more ovate carapace seen from the side, 

 with a discontinuous marginal flange, and an arched, rather than 

 straight, dorsal line. The surface in both forms is pitted. 



Occurrence. — Middle Devonian ; Paffrath. Two specimens. 



* Jones, Kirkby and Brady, Ann. Mag. Nat. Hist., ser. 5, xviii. p. 263, pi. ix, 

 figs. 5a, b. 



EXPLANATION OF PLATE VIIL 



Fig. 1. — Sporocarpon aculeatum sp. n. Upper Devonian : Ebersdorf, Silesia. 

 X 26. 



,, 2. — (?) Sporocarpon clentalum sp. n. A fragment of the wall. Upper 

 Devonian: Ebersdorf, Silesia, x 52. 



,, 3. — Traqiudria tentaculifers sp. u. Upper Devonian : Schiibelhammer, 

 Bavaria. X 26. 



,, 4. — Sporocarpon aculeatum sp. n. Upper Devonian : Schiibelhammer, 

 Bavaria, x 26. 



,, 5. — CftZcisi^/iara spiwosa Williamson. Middle Devonian : Paffrath, the Eifel. 

 X 216. 



,, 6. — (?) Calcisphxra from interior of Sporocarpon shown in fig. 1. x 216. 



,, 7. — Polijmor2)hina archaica sp. n. a, side view; b, oral view. Middle 

 Devonian : Paffrath. X 26. 



,, 8. — Cassidulina devonica sp. n. Middle Devonian : Paffrath. x 52. 



,, 9. — Polymorphina seminis sp. n. Middle Devonian : Paffrath. x 26. 



,, 10. — Truncakdina lobatula Walker and Jacob sp. a, inferior view ; b, peri- 

 pheral view. Middle Devonian : Paffrath. x 26. 



,, 11. —Bairdia curta McCoy. Carapace seen from the left side. Middle 

 Devonian : Paffrath. x 26. 



,, 12. — Cytherella preualida sp. n. a, seen from the left side; 6, edge view. 

 Middle Devonian : Paffrath. x 26. 



,, 13. — Cy there intermedia. ]\Iunster. a, carapace seen from the left side ; 

 b, edge view. Middle Devonian : Paffrath. X 26. 



,, 14, — Bythocythere eifeliensis sp. n. a, carapace seen from the left side; 

 b, edge view. Middle Devonian : Paffrath. x 26. 



