136 
ICHTHYODOETJLITES. 
1837. Oracanthus minor , L. Agassiz, ibid. p. 16, pi. iii. figs. 5, 6. 
[Bristol Museum.] 
1843. Oracanthus confluens , L. Agassiz, ibid. p. 177 (name only). 
1855. Oracanthus milleri , F. M‘Coy, Brit. Palaeoz. Foss. p. 634. 
1877. Oracanthus milleri , R. Etheridge, Jun., Geol. Mag. [2] vol. iv. 
p. 307, pi. xiii. figs. 4-6. 
1878. Oracanthus milleri , L. G. de Koninck, Faune Calc. Garb. Belg. 
p. 69, pi. v. fig. 10. 
1883. Oracanthus milleri J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i. p. 525, pi. lxiii. figs. 1-4, pi. lxiv., pi. Ixv. figs. 3, 4 (F also 
pi. Ixii.). 
Type. Bristol Museum. 
The type species. 
Form. Loc. Lower Carboniferous Limestone : Gloucestershire, 
Lanarkshire, and Armagh. Upper Carboniferous Limestone : Vise, 
Belgium. 
28857. Imperfect spine, originally measuring 0*3 in length, and 
O’125 across the base ; Bristol. Purchased , 1854. 
22685. Imperfect similar spine, with an attenuated smooth terminal 
portion, and two fragments ; Bristol. Purchased , 1848. 
P. 2241. Portion of similar spine free from matrix; Bristol. 
Egerton Coll. 
P. 3125-6, P. 3130. Imperfect large spine, and two fragments; 
Bristol. Enniskillen Coll. 
P. 3128. Smaller specimen, with one narrow face broken away, 
and the boundary of the base much obscured on one side; 
figured by J. W. Davis, loc. cit. pi. lxiv. fig. 1; Bristol. 
Enniskillen Coll. 
34883. Portion of a very small spine; Bristol.' Purchased, 1860. 
P. 2873-5. Small broad spines figured by J. W. Davis, loc. cit. 
pi. lxiii. figs. 1-3 ; Armagh. Enniskillen Coll. 
P.3131. More imperfect similar spine ; Armagh. Enniskillen Coll. 
P. 3129. Imperfect more elongated spine ; Armagh. 
Enniskillen Coll. 
P. 3132-3. Five terminal extremities of spines, and three fragments ; 
Armagh. Enniskillen Coll. 
P. 3135. Long slender dermal plate, with spatulate extremity, de¬ 
scribed and figured by J. YU Davis, loc. cit. p. 529, pi. Ixv, 
fig. 3 ; Armagh. Enniskillen Coll, 
