548 THE LAMELLIBRANCHS OF THE SILURIAN ROCKS OF GIRVAN. 



Fig. 25. Goniophora antiqua, the left valve of a large example. Page 539. 



Figs. 26, 26«. „ species, the cast of the interior showing deep, narrow groove posterior to the 



anterior adductor muscle scar. This species is No. 24,480 in the collection of the Geological Survey, 

 Jermyn Street. Page 539. 



Fig. 27. Goniophora antiqua, a right valve showing the recurved keel. Page 539. 



Figs. 28, 28a. Dexiohia eleyans, a left valve. Page 535. 



Fig. 29. „ „ a right valve. Page 535. 



Fig. 30. Sphenolium richmondense, a left valve. Page 502. 



Figs. 31, 31a. ,, ,, two views of bivalve example. Page 502. 



Fig. 32. Paranjdas minor, a right valve. Page 509. 



Figs. 33, 35. ,, „ other examples. Page 509. 



Plate V. 

 Figs. 1, la. Cardiomorpha prisca, a right valve. Page 529. 

 Fig. 2. Edmondia silurica, a right valve. Page 530. 

 ,, a left valve. Page 530. 

 „ a right valve. Page 530. 

 simplex, a left valve. Page 530. 

 ,, a right valve. Page 530. 



,, cast of the interior, with view of umbones. Page 530. 

 antiqua, internal cast of the right valve showing hinge plate. Page 531. 

 ,, a left valve. Page 531. 

 ,, a left valve. Page 531. 

 Figs. 11, 11a. Grammysia grandis, left valve and view from above. Page 542. 

 scotica, a bivalve example. Page 541. 

 undata, a young example, right valve. Page 540. 

 ,, a left valve. Page 540. 



,, the anterior end of a well-marked shell. Page 540. 

 ,, a bivalve example. Page 540. 

 Fig. 17. Slaoa fibrosa, a left valve. Page 532. 



Fig. 18. ,, „ a specimen showing the peculiar external marking. Page 532. 

 Figs. 19, 19a. Slava fibrosa, the right valve, with a portion near the ventra margin " magnified." 

 Page 532. 



Fig. 20. Cypricardinia lineata, probably a left valve. Page 534. 



Fig. 21. Ortlionotas inornata, a left valve. Page 536. 



Fig. 22. ,, nasuta, a right valve. Page 537. 



Fig. 23. OrtJtodesma platyphyllus, the right valve. Page 538. 



Fig. 24. Conoeardium pristis, both valves, view from below. Page 543. 



Fig. 25. „ ,, view of the shell with its fringe. Page 543. 



Fig. 26. „ „ . Page 543. 



Figs. 27, 27a. ,, dipterus, the right valve, with view of umbones. Page 54i. 



Fig. 28. ,, „ the right valve. Page 544. 



Fig. 29. „ „ the left valve. Page 544. 



Figs. 30, 30a. ,, „ the right valve, with magnified view of the ornament. Page 544. 



Fig. 31. Vamixemia distant, a left valve. Page 514. 



Fig. 32. ,, ., a right valve. Page 514. 



Fig. 33. ,, ,, a right valve. Page 514. 



Fig. 3. 



> 



Fig. 4. 



> 



Fig. 5. 



> 



Fig. 6. 



j 



Figs. 7, 



7a. , 



Fig. 8. 



>? 



Fig. 9. 



J 



Fig. 10. 



J 



Figs. 11 



11a. 



Fig. 12. 





Fig. 13. 





Fig. 14. 





Figs. 15 



, 15a 



Fig. 16. 





