COnnLIODONTID.B. 
]79 
P. 2408. Three immature examples of the “upper ” dental plate. 
P. 1395. Ten “ upper” dental plates. Egerton Coll. 
28018, 28724, 41161. Fifteen “ upper ” dental plates. 
Purchased, 1853 , 1868 . 
P. 2395, P. 2403. Two “ lower ” dental plates, figured by J. W. 
Davis, Joe. cit. pi. Iv. figs. 2, 10. 
P. 2407. Fourteen “ lower” dental plates, some showing marks of 
incomplete division into teeth. 
P. 1395 a. Five small “ lower ” dental plates. Egerton Coll. 
28042, 28724 a, 41161 a. Five “ lower” dental plates. 
Ihtrchased, 1851 , 185 . 3 , 1868 . 
P. 2397. Three teeth, naturally arranged, the group having pre- 
cisely the outline of an “ upper ” dental plate ; figured by 
J. IV. Davis, loe. cit. pi. Iv. fig. 4. 
P. 2396, P. 2398-P. 2404. Eight gently rounded teeth — the so- 
called Helodus planus, — one associated with two narrow 
broken teeth ; figured by J. W. Davis, loc. cit. pi. Iv. 
figs. 3, 5-9, 11, 12. 
P. 2410, P. 2614 a. Sixty similar teeth ; seven in associated pairs. 
P. 2604. Forty-five similar teeth, mostly very narrow. 
P. 1399, P. 1438, P. 1476. Sixteen similar specimens. 
Egerton Coll. 
28746-7, 28750, 38505, 41163. Thirty-three similar specimens. 
Purchased. 
P. 2604 a. Eight small narrow teeth, some of the form figured hy 
J. W. Davis under the name of Helodus Icevissimus, loc. cit. 
pi. li. fig. 1 8ff. 
(ii.) Lanarkshire and Ayrshire, Scotland. 
46048. Two “ upper ” and three “ lower ” dental plates, smaller 
than the adult specimens from Armagh ; Beith, Ayrshire. 
Presented hy Robert Craig, Esq., 1874, 
46049. Two small flat teeth — the so-caUed Helodus planus ; Beith. 
Presented hy Robert Craig, Esq., 1874. 
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