94 
SELACHII. 
P. 2579. A much worn and abraded specimen, figured by J. W. 
Davis, l. c. pi. lviii. fig. 1, as C. cornutus. 
P. 2514, P. 2585. Eighteen examples, some broken and much ab¬ 
raded, some perfect, and showing more or less of the pos¬ 
terior portion of the tooth. 
P. 2496-7. Type specimens of Mylacoclus quaclratus. 
P. 2495. Type specimen of Mylacodus sesamini. 
P. 2498. Thirty-two specimens, relatively short, some much broken 
and abraded, two showing the posterior portion of the 
tooth in position. 
P. 1408-9. Four imperfect examples. Egerton Coll. 
P. 2504 a. Perfect tooth with base, wanting hinder portion. 
26053 a. Very broad broken specimen, showing hinder portion of 
tooth in position. Purchased , 1851. 
P. 5362. Three small teeth; Ticknall, near Melbourne, S. Derby¬ 
shire. Two are shown, of the natural size, in PI. I. 
figs. 14, 15. Wilson Coll. 
Copodus furcatus, Davis. 
1862. Copodus falcatus, Morris & Roberts, Quart. Journ. GeoL Soc. 
vol. xviii. p. 100 (name only). 
1883. Copodus furcatus , J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i. p. 466, pi. lviii. fig. 16. 
Type. Detached tooth; Pritish Museum. 
Teeth similar to those of C. spcitulatus, but having the posterior 
portion separated by a suture strongly bent in the middle, giving to 
the detached piece a triangular form. 
Form. § Loc. Lower Carboniferous Limestone : Armagh, Ireland. 
P. 2509. Type specimen. Enniskillen Coll. 
Copodus lingua (Davis). 
1862. Mesogomphus lingua (Agassiz MS.), Morris & Roberts, Quart. 
Journ. Geol. Soc. vol. xviii. p. 101 (name only). 
1883. Mesogomphus lingua , J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i. p. 471, pi. lviii. fig. 16. 
Type. Imperfect detached tooth; British Museum. 
Teeth longer than broad ; crown flat; the anterior margin 
