CESTEACIOX TID2E. 
301 
P. 2167. Eleven small spines, mostly with large posterior denticles, 
some approaching “ E. crassispinus ,” some much larger. 
Egerton Coll. 
P. 2828. Type specimen of E, crassispinus described by Agassiz, 
Poiss. Eoss. vol. iii. (1837), p. 48, pi. viii. b. fig. 7. 
Enniskillen Coll. 
P. 2815, P. 2823, P. 2829, P. 4427-9. Twenty small spines, some 
like 44 E. crassispinus some more slender and more finely 
ribbed, others much larger. Enniskillen Coll. 
(b) Cephalic Spines. 
36164. Nearly complete spine with small protuberances at the base 
of the exserted portion, the so-called Sphenonchus hamatus, 
A mss. 1 Purchased, 1861. 
41350. Three examples. Purchased , 1869. 
38538. Exserted portion of a similar spine. Purchased , 1864. 
P. 2204. Three more or less complete examples, one with broad 
rounded base, the others with the base more compressed ; 
one is labelled in Agassiz’s handwiiting, “ Sphenonchus 
hamatus , Ag.” Egerton Coll . 
P. 2772. Seven specimens, five nearly perfect, showing a single 
barb. Enniskillen Coll. 
P. 4630. Two spines, associated with cartilage and shagreen. 
Enniskillen Coll, 
IV. Lowek Oolite. (a) Dorsal Fin-spines. 
47144. Type specimen of Egbodus crassus , Agassiz, described and 
figured, tom. cit. p. 47, pi. x. fig. 23, said to have been 
obtained from the Inferior Oolite of Braunston, Oakham ; 
the locality cannot be accurate, and is given by Agassiz as 
Kodmore Pits, near Towcester. Sharp Coll. 
47439. A small finely-ribbed compressed spine, the exserted portion 
measuring about 0-09 in length, and its base-line very 
oblique ; posterior denticles small, though mostly de¬ 
stroyed ; Inferior Oolite, Stamford, Lincolnshire. 
Sharp Coll. 
P. 2153. Extremity of a spine resembling that named Egbodus api - 
calls, Agassiz 2 ; StonesfieldSlate, Stonesfield. Egerton Coll. 
1 L. Agassiz, Poiss. Foss. vol. iii. (1843) p. 202, pi. xxii. a. figs. 12-14."/' 7 '* ^ 
Poiss. Foss. vol. iii. (1837), p. 43, pi. x. fig. 22. This is not H. apwalis, 
Agass., tom. cit. p. 195, pi. xxiii. figs. 16-20. 
