18 
ICHTHTOTOMI. 
vary ; and teeth of this form may thus he provisionally 
placed with G. mirabilis. Purchased, 1860. 
P. 1319 a. Fragment of similar tooth, from the “ Black Rock, 
labelled by Agassiz G. mirahilis. Egerton Goll. 
34973. An imperfect tooth, the denticles unusually numerous and 
slender; Bristol. Purchased, 1860. 
P. 2952. Base of a large and a small tooth ; Bristol. 
Ennislcillen Goll. 
P. 1319, P. 2919. Group of much broken small teeth in limestone, 
bearing Agassiz’s MS. label ; Bristol. 
Egerton ^ Ennislcillen Golls. 
36465. Two ‘imperfect small tooth, one figured in Quart. Journ. 
Geol. Soo. vol. xviii. pi. iii. fig. 6 ; Groton, Shropshire. 
Presented by 0. E, Roberts, Esq., 1862. • 
42216. Seven imperfect teeth ; Groton. Baugh Goll. 
46821. Small tooth ; Derbyshire. Gilbertson Goll. 
P. 5360. Three imperfect teeth, detached from matrix ; Ticknall, S. 
Derbyshire. Wilson Goll. 
P. 4893. Four teeth; 'W’ensleydalo, Yorkshire. Horne Goll. 
49628. Abraded and broken tooth, apparently of this species ; 
Richmond, Yorkshire. Purchased, 1878. 
Cladodus marginatas, Agassiz. 
1843. Cladodus marginatus, L. Agassiz, Poiss. Foss. vol. iii. p. 198, 
pi. 22 b. figs. 18-20. 
1843. Cladodus aeutus, L. Agassiz, tom. cit. p. 109, pi. 22 b. fig. 21. 
1848. Cladodus lavis, F. McCoy, Ann. & Mag. Nat. Hist. [2] vol. ii. 
p. 133. 
1865. Cladodus leevis, F. McCoy, Brit. Palseoz. Foss. p. 619, pi. 3 k. 
fig. 6. 
1856. Cladodus mirabilis, F. McCoy, op. cit. p. 619 (in part). 
1883. Cladodus marginatus, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. i. p. 373, pi. xHx. figs. 7-9. 
1883. Cladodus conicus, .1. W. Davis, tom. cit. p. 664, pi. xlix. fig. 6. 
1883. CJadodus acuius, J. W. Davis, tom. cit. p. 377, pi. xlix. fig. 17. 
Type. Detached teeth : Geological Society of London. 
Teeth robust, the crown consisting of a median principal cone, and 
not more than two lateral cones on each side. The cones are much 
compressed, with sharp lati.'ral edges ; except when worn, they are 
marked by few small irregular, sharp striae. The apex of the 
