COCCOSTEIDiE. 
307 
P. 5540. Plaster cast of a similar but more imperfect specimen, with 
displaced median dorsal plate; Thurso. The original is 
also preserved in the Museum of Science and Art, Edin¬ 
burgh. Presented by the Lords of the Committee 
of Council on Education , 1888. 
Eig. 46. 
Homosteus milleri , Traq.—Outline of cranial and dorsal shield, by E. H. Tra- 
quair, one-sixth nat. size, a, b, c, undetermined bones ; a.d.l., anterior 
dorso-lateral; a.e., ethmoid ; c., central; e.o., external occipital; m., mar¬ 
ginal ; m.d., median dorsal; m.o., median occipital ; o., orbit; p.d.l 
posterior dorso-lateral; jp.o., preorbital; pt.e., pineal; pt.o., postorbital. 
P. 698. Series of seven plaster casts of specimens in the Hugh 
Miller Collection, Edinburgh Museum, five being figured 
by Miller, op. cit. figs. 27, 28, 35, 39 ; Orkney. 
Egerton Coll . 
P. 699. Imperfect median dorsal plate measuring, in its broken con¬ 
dition, 0*28 across ; Orkney. Egerton Coll. 
P. 3227. Portion of dermal plate, showing stellate tubercular orna¬ 
ment ; Orkney. • Enniskillen Coll. 
x 2 
