﻿pal.eoniscid.*:. 453 



with fine marginal pectinations. Scales very gmall, with fine, 

 short, marginal pectinations in their antero-superior portion. 



Form. $• Loc. Lower Old Red Sandstone : Orkney, Caithness, 

 Ross-shire, Nairnshire, Cromarty, and Banffshire. 



(i.) Orkney (typical 0. trailli). 



35045. Obscurely preserved fish, with impressions of fins, the bones 

 and scales converted into a shining bituminous substance ; 

 Stromness. Purchased, 1860. 



39187. Smaller example with distinct remains of dentition and 

 ornamented squamation. Bowerbank Coll. 



40969. Specimen 0-26 in length, similar to the first in state of 

 preservation ; Stromness. Purchased, 1867. 



P. 171-5. Five similarly-preserved specimens, the third only 0*17 

 in length and in counterpart. Purchased, 1881. 



P. 1367. Two similar specimens showing the greater portion of the 

 squamation and fins in impression; Belyacreugh. 



Egerton Coll, 



(ii.) Ross-shire. 



41731. Imperfect trunk with well-preserved squamation and 

 remains of the fins ; Glen Roy. Purchased, 1869. 



P. 6077. Remains of the head, pectoral arch, and abdominal region ; 

 probably from Edderton, near Tain. The coarsely rugose 

 ornament of the clavicle and supraclavicle is displayed. 



Presented by F. Harford, Esq., 1889. 



P. 1174. Caudal region, imperfectly preserved ; Edderton. 



Egerton Coll. 



(iii.) Lethen Bar, Nairnshire (typical C. cummingice). 



49182. Imperfectly-preserved fish, in counterpart, 0-25 in length, 

 showing all the fins. Purchased, 1878. 



49193. Similar specimens displaying some of the teeth and branchio- 

 stegal rays. Purchased, 1878. 



P. 2073, P. 3402. Similar specimen, in counterpart, 0-3 in length, 

 with nearly complete caudal fin, showing its inequilobate 

 form and slightly excavated posterior border. 



Egerton Sc Enniskillen Colls. 



