COOHLIODONTIDJE. 
179 
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, loc. cit. pi. lv. 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. 
Purchased, 1851, 1853, 1868. 
P. 2397. Three teeth, naturally arranged, the group having pre¬ 
cisely the outline of an “ upper ” dental plate ; figured by 
J. W. Davis, loc. cit. pi. lv. 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. lv. 
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 by 
J. AV. Davis under the name of Helodus Icevissimus , loc. cit. 
pi. li. fig. 18a. 
(ii.) Lanarkshire and Ayrshire , Scotland. 
46048. Two “upper” and three “lower” dental plates, smaller 
than the adult specimens from Armagh ; Beith, Ayrshire. 
Presented by Robert Craig, Esq., 1874, 
46049. Two small flat teeth—the so-called Helodus planus ; Beith. 
Presented by Robert Craig, Esq., 1874. 
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