108 
ICHTHYODOEULITES. 
Acondylacantlms colei, Davis. 
[Plate I. fig. 2.] 
1883. Acondylacantlms 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. Sf Log. Lower Carboniferous Limestone ; Armagh. 
P. 2538. Type specimen, figured by Davis, loc. cit. pi. xlv. fig. 7. 
Enniskillen Coll. 
P. 2538. Ten more fragmentary spines. Enniskillen Coll. 
P. 2538 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 Ph I. fig. 2. 
Bowerbank Coll. 
Acondylacantlms tenuistriatus, Davis. 
1883. Acondylacantlms tenuistriatus, J. W. Davis, Trans. Roy. Dublin 
Soc. [2] vol. i. p. 350, pi. xlv. fig\ 8. 
Type. British Museum. 
Form, df Loc. Lower Carboniferous Limestone: Armagh. 
P. 2890. Type specimen. Enniskillen Coll. 
P. 2890 a. More imperfect portion of spine. Enniskillen Coll. 
Acondylacantlms distans (M‘ Coy). 
1848. Ctenacantlms distans, F. M‘Coy, Ann. Mag. Nat. Hist. [21 vol. ii. 
p. 116. 
1855. Ctenacantlms distans, F. M'Coy, Brit. Pakeoz. Foss. p. 625, 
pi. iii. k. fig. 15. 
1883. Acondylacantlms distans, J. W. Davis, Trans. Rov. Dublin Soc. 
[2] vol. i. p. 349, pi. xlvi. fig. 5. 
Type. Woodwardian Museum, Cambridge. 
Form. Loc. Lower Carboniferous Limestone: Armagh. Car¬ 
boniferous Limestone ; Denbighshire. 
