PALJEOXISCIDJE. 
453 
with fine marginal pectinations. Scales very small, with fine, 
short, marginal pectinations in their antero-superior portion. 
Form. Loc. Lower Old lied Sandstone : Orkney, Caithness, 
Ross-shire, Nairnshire, Cromarty, and Banffshire. 
(i.) Orkney (typical C. trcdlli). 
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. Bowerhank 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 0T7 
1 in length and in counterpart. Purchased , 1881. 
P. 1367. Two similar specimens showing the greater portion of the 
squamation and fins in impression; Belyacreugh. 
Eqerton 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, 18/8. 
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 Sf Enniskillen Colls. 
