DIPLACANTIITDJE. 
27 
there is thus no justification for the proposed change in nomen¬ 
clature. . . . 
Form. Sf Log. Lower Old Eed Sandstone : Nairnshire, Banffshire, 
Cromarty, and Orkney Isles. 
49184. Specimen showing displaced dorsal spines, the anal, and 
portions of the pectoral arch, in counterpart; Lethen Bai. 
Purchased , 1878. 
P 1362. Fragment, with first dorsal fin ; Lethen Bar. 
Egerton Coll. 
P. 5076. Imperfect specimen, in counterpart, with pectoral, pelvic, 
and anal spines, and a fragment of the second dorsal; 
Lethen Bar. Presented by J. E. Lee , Esq., 1885. 
P. 1381. Nodule with imperfect remains of a fish ; Gamrie. 
Egerton Coll . 
P. 4040. Large, well-preserved 
aspect; Gamrie. 
specimen, in counterpart, lateral 
Purchased , 1883. 
P. 4041. Smaller fish, in counterpart, shown from the ventral and 
lateral aspects, and displaying part of the pectoral arch 
with the median pectoral spines ; Gamrie. The specimen 
is represented, of the natural size, in PI. III. fi§>’« 1? and 
the various parts indicated by the lettering. It is of 
especial interest as exhibiting very distinctly the lower 
expanded portion of the right side of the pectoral arch, 
with a short, stout, straight, acute spine, directed back¬ 
wards from its median end. Unfortunately, however, no 
precise details of the basipterygium of the pectoral fin can 
be observed. Purchased , 1883. 
P. 5075. Nearly complete fish, lateral aspect, in half of nodulej 
Gamrie. Presented by J. E. Lee , Esq., 18S5. 
P 6188. Trunk with fins and part of head, in counterpart; Gamrie. 
Purchased , 1890. 
P. 176. Very imperfectly preserved specimen in flagstone; Orkney. 
Purchased, 1881. 
P. 1369. Similar fossil; Orkney. 
Egerton Coll , 
