294 
SELACniI. 
raised, only slightly convex. Most of the following specimens may 
be assigned to this species. 
(i.) Anterior dorsal fin^spines. 
28282. Large crushed specimen in matrix. Purchased^ 1853. 
29012. Incomplete specimen. Pur chased, 1854. 
P. 2206. Imperfect pyritized spine. Eijerion Coll. 
P. 2166 a. Imperfect specimen, exsertod about 0’24. E(/erton Coll. 
P. 2750. Much crushed spine, showing few denticles, exsorted 0’4. 
Ennisl'Ulen Coll. 
P. 2803-4. Two imperfect specimens. Enniskillen Coll. 
P. 5007. Fine specimen, exserted about 0'26 ; the posterior face 
almost flat, and the denticles large and alternating. 
Presented hy J. E. Lee, Esq., 1885. 
P. 5868. Spine with very largo denticles, 0'37 in length. 
P. 2822. Type .specimen of Ilyhcdits carinatus, Agassiz probably 
referable to the young of Acrodus anninyke. 
Ennishillen Coll. 
P. 2815, P. 2824. Two similar spines. Enniskillen Coll. 
P. 3167. Doubtful small spine, with widely spaced nodose ribs, 
associated with a portion of the posterior spine. 
Enniskillen Coll. 
P. 2167. Small spine, with ornament very similar to that of 
No. P. 2733. ’ Eyerton Coll. 
(ii.) Posterior dorsal fin-sjoines. 
P. 491. Specimen figured by Agassiz, Poiss. Foss. vol. iii. pi. viii. l>- 
fig. 4 (Jlylodus ciirtus). Eyerton Coll. 
P. 2808. Specimen figured by Agassiz, tom. ait. pi. viii. b. fig- ^ 
{Hyhodus curtus) ; Keynsham, near Hath. 
Enniskillen Coll- 
P. 2807, P. 2809. Two imperfect examples, the second labelled 
“ Hyhodus curtus ” by Agassiz. Enniskillen Coll. 
P. 2821. Small spine, 0-2 in total length, perhaps correctly placed 
here. Enniskillen Cull. 
' Poiss. Foss. vol. iii. (1837), p. 52, pi. ix. figs. 13, 14. 
