﻿108 1C1ITHYODOKULITES. 



Acondylacanthus colei, Davis. 

 [Plate I. fig. 2.] 



L888. Acondylacanthus colei, J. W. Davis, Trans. Roy. Dublin Soc. [2] 

 vol. i. p. 347, pi. xlv. fig. 7, pi. xlvi. fig-. 1. 



Type. British Museum. 



Form. $ Loc. Lower Carboniferous Limestone ; Armagh. 



P. 2538. Type specimen, figured by Davis, loc. cit. pi. xlv. fig. 7. 



Enniskillen Coll. 



P. 2536. Ten more fragmentary spines. Enniskillen Coll. 



P. 2536 a. Fragment of crushed spine exhibiting the line of de- 

 marcation between the exserted and inserted portions. 



Enniskillen Coll. 



P. 4199. Portion of spine showing well the median posterior keel. 



Enniskillen Coll. 



39167. Portion, of crushed spine, with lateral ridges partly nodose ; 

 a transverse section is shown in PI. I. fig. 2. 



Bowerbank Coll. 



Acondylacanthus tenuistriatus, Davis. 



1888. Acondylacanthus tenuistriatus, J. W. Davis, Trans. Roy. Dublin 

 Soc. [2] vol. i. p. 350, pi. xlv. fig. 8. 



Type. British Museum. 



Form. <$f Log. Lower Carboniferous Limestone : Armagh. 



P. 2890. Type specimen. Enniskillen Coll. 



P. 2890 a. More imperfect portion of spine. Enniskillen Coll. 



Acondylacanthus distans (M'Coy). 



1848. Ctenacanthus distans, F. M'Coy, Ann. Mag. Nat. Hist. [2] vol. ii. 



p. 116. 

 1855. Ctenacanthus distans, F. M'Coy, Brit. Palseoz. Foss. p. 625, 



pi. iii. k. fig. 15. 

 1883. Acondylacanthus distans, J. W. Davis, Trans. Rov. Dublin Soc. 



[2] vol. i. p. 349, pi. xlvi. fig. 5. 



Type. "Woodwardian Museum, Cambridge. 



Form. Sf Log. Lower Carboniferous Limestone : Armagh. Car- 

 boniferous Limestone ; Denbighshire. 



