Palaeozoic Bivalved Entomostraca. 269 



Fiys. 10 & 11. Beyrichia varicosa, J. & K. Side views of right aud left 



valves. Whitebaulks. 

 Fig. 12. Beyrichia (?) biccesa, J. & K. Right valve. I Woodhill 

 Fiy. 13. Tlie same. Left valve. f 



Fiy. 14. Primitia (?) Holliana, J. & K. a, left valve ; h, right valve ; c, 



ventral view. Great Ormes Head, Caernarvonshire, 

 Fig. 1.5. Beyrichiella (?) reticosa, J. & K. Right valve. Abden, Fife. 

 Fig. 16. The same. «, left valve; h, dorsal view; c, ventral view. 



Whitebaulks, Linlithgowshire. 

 Fig.Yl. Beyrichiella {?) veiUricornis, 3.8115.. Right valve. Robroystone. 

 Fig. 18. The same, a, left valve ; b, ventral view ; c, end view. 



Charlestown, Fife. 

 Fig. 19. Kirkbya tricollina, J. & K. Right valve. Arnside. 

 Fig. 20. Moorea obesa, J. & K. a, side view ; b, ventral view. Bro- 



castle, South Wales. 

 Fig. '21. Moorea tenuis, 3. Si K. «, side view; 6, ventral view. Mendips. 

 Fig. 22. Cytherella (?) reticulosa, J. & K. a, side view ; b, edge view. 



Storr Moss. 

 i^i]$)'. 23. The same. Internal cast, showing the muscle-spot. Storr Moss_ 



Plate IX. 

 [All figures magnified about 25 diameters.] 



Fig. 1. Cytlierella valida, J. & K., var. affiliata, nov. a, left valve; b, 



dorsal view. Gleaston Castle. 

 Fig. 2. Cytherella (?) elongata, J. & K. Left valve. I ^urravfield 

 Fig. 3. The same. Right valve. f •' ' ^ 



Fig. 4. By thocy there Youngiana, J. & K. a, left valve; b, dorsal view. 



Woodeud Quarry, Lowick. 

 Fig. 5. Bylhocythere antiqua, J. & K. a, left valve ; h, dorsal view. 



Skellygate. 

 Fig. 6. Argillcccia cequalis, J. & K. a, left valve; b, ventral view. 



Larriston. 

 Fig. 7. Aglaia (?) ajpridiformis, J. & K. a, left valve ; b, ventral view. 



Plashetts. 

 Fig. 8. Xestoleberis (?) subcorbuloides, J. & K. a, right valve ; 6, ventral 



view. Near Storr Moss. 

 Fig. 9. Macrocypris carhonica, G. S. Brady, a, left valve ; b, dorsal 



view. (After Brady.) Millburn, Campsie. 

 Fig. 10. Carbo7iia Wa7-diana, J. & K. a, side view ; b, edge view. 



Longton, Staffordshire. 

 Fig. 11. Cythere (?) supei-ba, J. & K. Carapace, showing the right valve. 



Craigkelly. 

 Fig. 12. Cythere (?) obtusa, J. & K, «, carapace, side view ; 5, ventral 



view. Woodend, Lowick. 

 Fig. 13. Bairdia legumen, J. &K. o, right valve ; 6, dorsal view. Glea- 

 ston Castle. 

 Fig. 14. Bairdia subelongata, J. & K., var. major, nov. Left valve. 



Barmoor Redhouse, Lowick. 



