44 
SELACHII. 
P. 2990. Type specimens of P. inequilateralis, Davis ; Richmond. 
Enniskillen Coll. 
P. 2991. Two similar, but less perfect, unsymmetrical lateral teeth ; 
Yoredale, Yorkshire. Enniskillen Coll. 
35477, 35481. Two similar teeth; Richmond. Purchased, 1860. 
39923, P. 1421. Incomplete crown (. Purchased , 1866) and broken 
fragment ( Egerton Coll.) ; Settle, Yorkshire. 
46035. Tour teeth in matrix ; Beith, Ayrshire. 
Presented by Robert Craig , Esq., 1874. 
P. 258. Two teeth in matrix ; Beith. Purchased, 1880. 
P. 2988. Tooth in matrix ; Ladedda, Fifeshire. Enniskillen Coll. 
Petalodus hastingsise, McCoy (non Owen). 
1843. Petalodus hys ting sice, L. Agassiz, Poiss. Foss. vol. iii. pp. 174, 
384 (name only). 
1843. Petalodus Icevissimus, L. Agassiz, tom. cit. pp. 174, 384 (name 
only). 
1855. Petalodus hastingsii, F. McCoy, Brit. Palaeoz. Foss. p. 635. 
1875. Petalodus hasting sice-, W. H. Baily, Figs. Char. Brit. Foss. p. 120, 
pi. xli. fig. 13. 
1883. Petalodus liast-incjsice, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i. p. 493, pi. lix. figs. 16, 17, 19 (non figs. 18, 20, 21). 
1886. Petalodus hastingsice, J. W. Davis, Geol. Mag. [3] vol. iii. p. 149. 
Type. Detached teeth. 
A comparatively small species, none of the typical teeth having a 
greater transverse measurement than 0-018 m. The margin of the 
crown of the principal teeth is almost always gently rounded; that 
of the lateral teeth shows more tendency towards an acuminate 
form. The basal coronal folds generally occupy a relatively less 
space upon the posterior aspect of the tooth than in P. acuminatus. 
Form. Loc. Lower Carboniferous Limestone : Armagh, Tyrone, 
Ireland. Upper Carboniferous Limestone: Derbyshire ( Davis), 
(?) Yorkshire, Northumberland (McCoy), England. 
P. 2992-4. Three teeth described and figured by J. W. Davis, loc. 
cit. ; Armagh. Enniskillen Coll. 
P. 2998. About twenty-six teeth ; Armagh. Enniskillen Coll. 
P. 1422. Fourteen teeth; Armagh. Egerton Coll. 
28733, 28922, 38504. Twelve teeth; Armagh. 
Purchased, 1854, 1864. 
