192 



CARBONIFEROUS LAMELLIBRANOHIATA. 



The following species are found in the British and Belgian Coal Measures : 



Carhonicola acuta, Sow., sp. 



„ aquilina, Sow., sp. 



turgida, Brown, sp. 



„ robusta, Sow., sp. 



„ similis, Brown, sp. 



„ nucularis, Hind. 



,, obtusa, Hind. 



Anthracomya modiolaris, Sow., sp. 



Anthracomya lanceolata, Hind. 

 Wardi, Eth. 

 ,, Williamsoni, Brown, sp. 



Isevis, var. scotica, Etli. 

 Naiadites carinata, Sow., sp. 



,, modiolaris, Sow., sp. 

 Posidoniella minor, Brown, sp. 'i i 



ParaUelodon 8emicostatus,M.'Qoj, sp.J 



a marine 

 band. 



At the present time a comparison of European and North American Car- 

 boniferous Lamellibranchs is impossible, but I cannot help being struck by the 

 great similarity of shells occurring in the two areas. I am of opinion that when 

 species from both areas are studied a large number will be found to be identical. 



Mr. J. Smith and Mr. D. Tait have kindly drawn up for me lists of the 

 Carboniferous Lamellibranchs found in the west and cast of Scotland respectively, 

 showing the range of each species, and I beg to acknowledge fully my great 

 indebtedness to each of these gentlemen for this and other help in my work. 



List of Carboniferous Lamellibranchiata from the East of Scotland, by P. Tait. 



Actinopteria fluctuosa, Eth., sp. 



„ jjersulcata, M'Coy, sp. 



„ sulcata, M'Coy, sp. , 



Allorisma maxima, Port!., sp 



„ sulcata, Flem., sp 



Anthracomya I .wis, var. scotica, 

 Eth. 



„ minima, Hind ! x 



•„ modiolaris, Sow., sp. 



Phillipsii, William- 

 son, sp. 

 „ valenciensis, Hind ... 



„ Wardi, Eth., senr.... 



„ Williamsoni, Brown, 



sp. 

 Ariciilojii-ctcn c{. chithratus, M'Coy 



Lower 

 Carboniferous. 



Upper 



Carboniferous. 



Locality Numbers. 



a 



<D 





i 



o 



! 



9 



a 



m 



o 



1 

 a 



s 



is 

 o 



o 

 O 



o 



1 



Ph 

 t3 



o 



1 

 m 

 a 



o 



o 

 Q 



% 

 o 



yA 



1 



01 



(See p. 19(5.) 





X 













132. 



X 



X 





X 









34, 38,90, 118, 126,151, 176, 

 183, 191, 204, 206, 207. 



X 



X 



X 



X 









34, 38, 62, 92, 95. 



X 















34. 



X 



X 



X 





... 







50, 53, 54, 83, 88, 90, 94, 107, 

 111, 114, 143 



X 















32, 33, 90, 141, 164, 166,167, 















168,175, 177,178. 



X 



X 



X 



::: 



... 



? 



159. 



43. 



9, 22, 23. 



X 





... 





X 







163, 210. 





X 







X 



X 



43, 45, 145. 



... 











X 





42, 138. 



... 



X 









... 





204, 227. 



