74 



BRITISH CARBONIFEROUS BRACHIOPODA. 



I must also state that notwithstanding the lengthened examination I have made of 

 ^he Carboniferous Spirifero:, there are a few even among those here retained that will 

 still require some further investigation in order to ascertain whether or not they may 

 be varieties of some of those already described, and among these I will mention Sp. 

 crassa, De Kon., Sp. grandicosiata, M'Coy, Sp. minima, Sow^, Sp. me&ogonia, M'Coy, and 

 Sp.fusiformis, of Phillips. To these we must likewise add a few other doubtful forms, such 

 as Sp. transiens, M'Coy, Sp. partita, Portlock, Sp. decemcostata, M'Coy, Sj). bicarinata, 

 M'Coy, Sp. suhconicns, Martin, Sp. dorsafa, M'Coy, Sp. rotundatus, Martin, Sp. exarata, 

 Fleming, Sp. elongata, Phil, and Sp. similis, M'Coy, whose relations or affinities could 

 not be ascertained or established in a satisfactory manner from the absolute want of 

 sufficient material, for not a single specimen or even fragment of some could be procured, 

 and the descriptions and illustrations of the authors were not such as to lead to any 

 satisfactory results. It is therefore probable, nay certain, that the larger number (if not all) 



Spirifera laminosa, M'Coy. 



— mesoloba, Phil, 



— microgemma, Phil. Not carb. 



— megaloha, Phil. Not carb. 



— mesogonia, M'Coy. 



— minima, Sow. 



— Martini, Fleming. 



— macroptera, Hall. 



— mesomala, Phil. Not carb. 



— mosquensis, Fischer. 



■ — nuda. Sow. Not carb. 



— octoplicata, Sow. 



— oblata. Sow. 



— obtusa, Sow. 



— ovalis, Phil. 



— omithorhjncha, M'Coy. 



— ostiolata, Steing. Not carb. 



— plebeia, Phil. Not carb. 



— protensa, Phil. Not carb. 

 partita, Portlock. 

 piuguis, Sow. 

 plauata, Phil. 

 planicosta, M'Coy. 

 paucicostata, M'Coy. 

 princeps, M'Coy. 

 pulchella. Sow. Not carb. 

 phaloena, Phil. Athyris. 

 prisca, Eichw. Not carb. 

 papilionacea, Phil. Chonetes. 

 recurvata, De Kon. Not British. 

 reticulata, M'Coy. 

 rotundata, Sow. 



? 



? Spirifera rotundata, Martin. 



— rhomboidea, Phil. 



— rudis, Phil. Not carb. 



— Roemeri, De Kon. Said to occur in 



Ireland. (?) 



— Reedii, Dav. 



— radialis, Phil. Strophomena. 



— resupinata, Martin. Orthis. 



— semireticulata, Phil. 



— septosa, Phil. 



— sexradialis, Phil. 



— Sowerbii, Fischer. 



— similis, Phil. 



— striata, Martin. 



— striatella, M'Coy. Not a Spirifer. 



— stringocephaloides, M'Coy. 

 ? — subconica, Martin. 



— siibrotundata, M'Coy. 



— symmetrica, Phil. 



— senilis, Phil. Streptorhynchus ? 



— speciosa, Sehloth. Not carb. 



— semicircularis, Phil. 



— simplex, Phil. Not Dev. 



— spirifera, Lam. 



— squamosa, Phil. Athyris. 



— transiens, M'Coy. 



— triangularis, Martin. 



— trisulcosa, Phil. 



— trigonalis, Martin. 



— tricornis, De Kon. 



— triradialis, Phil. 



— Urii, Fleming. 



