44 
SELACHII. 
P. 2990. Type specimens of P. inequilateralis, Davis ; Eichmond. 
Enniskillen Coll. 
P. 2991. Two similar, but less perfect, unsymmetrical lateral teeth ; 
Yorcdale, Yorkshire. Enniskillen Coll. 
35477, 35481. Two similar teeth ; Eichmond. Purchased, 1860. 
39928, P. 1421. Incomplete crown {Purchased, 1866) and broken 
fragment {Ejerton Coll.} ; Settle, Yorkshire. 
46035. Four teeth in matrix ; Beith, Ayrshire. 
Presented by Robert Craiy, Esq., 1874. 
P. 258. Two tooth in matrix ; Beith. Purchased, 1880. 
P. 2988. Tooth in matrix ; Ladedda, Fifeshire. Enniskillen Coll. 
Petalodus hastingsise, McCoy {non Owen). 
184.3. Petalodus hastingsue, 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. Pah-coz. Foss. p. 633. 
1876. Petalodus hastiiigsiee, W. H. Baily, Figs. Char. Brit. Foss. p. 120, 
pi. xli. fig. 13. 
1883. Petalodus hastingsia, J. W. Davis, Trans. Eoy. Dublin Soc. [2] 
vol. i. p. 403, pi. lix. figs. 10, 17, 19 {non figs. 18, 20, 21). 
1880. Petalodus hastingsiee, 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 
cro-mi of the principal teeth is almost always gently rounded ; that 
of the lateral teeth shows more tendency towai-ds 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. 4' 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. i 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, 1804. 
