266 



THE GEOLOGIST. 



Fic. 21. Spirifera Usulcata. Interior of the Yentral Yalve ; (tlie letters refer 

 ^ in these figures to the same parts as in figs. 8 and 9. 



2,5. . Interior of Dorsal Valve. 24 and 25 are from 



Capel Rig, East Kilbride. 



26. ovo2is, PhiUips. Prom Corrie Burn ; collection of Mr. J. 



Young. The beak has been restored from another specimen. 



27. ■ . Trom West Broadstone. These two figures repre- 

 sent the original type of Dr. Fleming's 8p. exarata. 



28. pinguis, Sow. From near Glasgow (?) ; in the Museum of 



Practical Graology. The exact locahty is not preserved, but it is cer- 

 tainly a Scottish specimen. 



29. Ca/rlulciensis, Dav. Hill Head, Lanarkshire. Fig. 29, a and d, 



are enlarged. 



30. Urii, Fleming. Hill Head, Lanarkshire. The lower figures 



are enlarged, and 30c shows the spiny investment considerably mag- 

 nified. 



31. Uneata, Martin. From West Broadstone, near Beith ; fig. 



31& is enlarged, and shows a portion of the spiny surface, which is 

 still more magnified in 31c. 



32. glabra, Martin. From East Kilbride, collection of Mr. Arm- 

 strong. 



33. . From Middleholm, near Lesmahago. 



34. . From Orchard-quarry, collection of Mr. Bennie. 



35. Spiriferina insculpta, Philhps. A fragment from Gare, Carluke parish, 



35a and h are enlarged restored representatives. Better Scottish 

 examples have been recently found. 



36. cristata, var. octoplicata, Sow. From West Lothian. Col- 

 lection of Dr. Fleming. 



37' . Lanarkshire. 



38, . From West Broadstone, Beith ; collection of Mr. 



Thompson. 



Plate L, Yol. III. 



1. RhyncJionella pugnus, Martin, From the Campsie main limestone. 



Collection of Mr. Yomig. 



2. . From Hyndberry Bank, parish of Loudon. Col- 

 lection of Mr. Thompson. 



3. pleurodooi, Phillips. Corrie Burn ; collection of Mr. Yoimg. 



4. . West Lothian ; collection of Dr. Fleming. 



5. . Capel Rig ; collection of Mr. Ai-mstrong. 



6. Camaroplioria crumena, Martin sp. From West Lothian ; collection of 



Dr. Fleming. 



7. Orthis Michelini, L'Eveille. From Campsie. 



8. . Erdarged fragment of the striated external sm^face, 



showing the position of the spines, M, and the exterior orifices of the 

 tiibular perforations which traverse the thickness of the shell. 



9. . Interior of the ventral valve, enlarged ; A, occlusor ; 



R, divaricator, and perhaps ventral adjuster musculai' impressions j 

 N, pedicle scar (?) ; T, teeth. 



10. . Interior of the dorsal valve ; J, cardinal process ; 



S, dental sockets ; L, oral processes (?) ; A A, occlusor impreesions. 



11. rcsiipinata, Martin. From Robroyston ; collection of Mr. Young. 



Much larger examples are found in Ap'sliii-e. 



12. . Enlai-ged fragment of the striated, spinose, and 



punctiu'cd surface. 



13. . Interior of the ventral valve. 



I I'- . Interior of the dorsal valve. 



