414 On the Palceozoic Bivalved Entomosiraca. 



Fig. 4, Sfrepula concentrica, sp. uov. Right valve. Smith Coll. no. 11 g, 



Lincoln Hill, Ii-oubridge. 

 Fig. 5. Strepiila irregularis, sp. nov. Interior of right valve. Smith 



Coll. no. llo, Lincoln Hill, Ironbridge. 

 Fig. 6. Sfrepula concentrica, sp. nov. Right valve. Smith Coll. no. SOg, 



Woolhope. 

 Fig. 7. Strepula irregularis, sp. nov. Left valve. Smith Coll. no. 11 5, 



Lincoln Hill, Ironbridge. 

 Fig. 8. The same. Carapace : a, right valve ; h, dorsal view. Smith 



Coll. no. 11,, Lincoln Hill, Ironbridge. 

 Fig. 9. The same. Carapace : a, right valve ; h, dorsal view ; c, ventral 



view. Vine Coll. xlix, bed 25. 

 Fig. 10. Placentula excavata, J. & H. Carapace: a, left valve; b, dorsal 



view. Vine Coll. XXIX,, bed 2o*. 

 Fig. 11. The same. Right valve. Vine Coll. xxix,, bed 25*. 

 Fig. 12. The &ame. Right valve. Vine Coll. xxiXj, bed 25*. 

 Fig. 13. Bollia Vinei, var. 7nitis, sp. et var. nov. Right valve. Vine 



Cull. XXXIV,, bed 37. 

 Fig. 14. Bollia Vinei, sp. nov. Left valve. Vine Coll. XXXIV3, T^e^l 37. 

 Fig. 15. Strepula irregularis, sp. nov. Interior of right valve. Smith 



Coll, no. 70, Lincoln llill, Ironbridge. 

 Fig. 16. Flacentuta e.rcavata, J. & H. Interior of right va,lve. Smith 



Coll. no. 60, Woolhope. 



Plate XIV. 

 Fig.l. Primitia lenticularis, J. & H. Carapace (not reticulate) : a, left 



valve ; b, dorsal view. Vine Coll. xxxi,, bed 25. 

 Fig. 2. Primitia fabulina, s^. now . Carapace: a, right valve ; 6, ventral 



view. Smith Coll. no. 48i, 2, Dudley Tunnel. 

 Fig. 3. Primitia paucipmutata, J. ^: II. Carapace : a, right valve ; b, 



ventral view. Vine Coll. xxiii, 2, bed 25. 

 Fig. 4. Primitia valida, var. angusfata, uov. Carapace : a, left valve ; b, 



end view. Vine Coll. xxviii^, bed 46. 

 Fig. 6, Primitia ornata, sp. nov. Right valve. Vine Coll. xxiv, bed 25. 

 Fig. 6. Primitia liumilis, sp. nov. a, right valve ; &, edge view. Vine 



Coll. XXV, bed 'l^-i. 

 Fig. 7. Primitia valida, sp. nov. Carapace : a, left valve ; b, edge view ; 



c, end view. Vine Coll. xxviiio, bed 46. 

 Fig. 8. Primitia valida, var. breviata. Carapace : a, right valve ; b, edge 



view. Vine Coll. XXVI3, bed 46. 

 Fig. 9, Primitia humilis, sp. nov. a, right valve; b, edge view of cara- 

 pace ; c, interior of left valve, filled with matrix [too convex 

 above]. Vine Coll. lxiii, bed 25. 

 Fiq. 10. Primitia diversa, sp. nov. a, right valve ; b, dorsal view; c, 



ventral view. DitFerent individuals. Vine Coll. xxxvu, 2, 3, 



bed 37. 

 Fig. 11. Primitia cequalis, sp. nov. Carapace: a, right valve; i, dorsal 



view. Smith Coll. no. 38, railwaj'-cutting, Ironbridge. 

 Fig. 12. Primitia cornuta,s^. noY. Carapace: a, right valve ; b, dorsal 



view. Vine Coll. xxxv, bed 40. 

 J^<^. 13. The same, young. Right valve. Bed 37 P (Specimen lost.) 

 Fig.l'^. Primitia semimdum, Jones. Carapace: «, left valve; /i, dorsal 



view ; c, outline of a short right valve. Smith CoU. no. 54, 



AVoolhope. 

 Fig. lo. Primitia f areata, sp. nov. Carapace: a, right valve outwards, 



and edge of left valve partly seen ; b, dorsal view. Smith Coll. 



\io. 43, Dudley Tunnel. 



