EUGXATHIDJE. 
313 
border or from the antero-superior angle. The external bones and 
some of the fin-rays with a similarly fine and close tubercular 
ornament. 
Form . Sf Loc. Lower Kimmeridgian (Lithographic Stone): 
Bavaria. 
P. 2060. Type specimen, labelled by Agassiz and Egerton, com¬ 
prising the imperfect head and scattered remains of the 
anterior portion of the trunk : Solenhofen. Part of the 
highly ornamented cranial roof is shown in impression, 
while the imperfect facial and opercular bones of the 
right side are exposed from within. The two left lower 
suborbitals are also shown from within where displaced 
above the head; and neither on these nor on those of the 
opposite side can the course of the sensory canal be 
traced. The outlines of the mandible and maxilla are 
not clear, but a displaced premaxilla exhibits a broad 
ascending process at one end, the height of this equalling 
the length of the dentigerous border of the bone. One 
imperfect element, which seems to be maxilla, has a 
slightly concave oral margin, with very small, closely- 
arranged teeth. The left operculum, though imperfect, 
is shown to have been deeper than broad; while the 
suture between this and the suboperculum is evidently 
oblique. A few very slender bones, which seem to be 
short ribs, are scattered among the remains of the trunk, 
but there are no traces of vertebrae. Numerous stout fin- 
rays occur, and two apparently from the front of the 
pectoral fin are covered with the tubercular ornament, 
while some others exhibit the same ornament on one 
border. The pelvic bones are shown to be no broader 
distallv than proximally, a wing of bone extending 
inwards on each side from the proximal two-thirds of the 
normal triangular element. The scales are remarkably 
scattered and shown in all positions, displaying the stout 
inner rib and peg-and-socket articulation; but narrowed 
scales are few. Among the remains are the jaws of two 
small Pycnodonts, perhaps the relics of food. 
Egerton Coll. 
P. 3583. Imperfect caudal region with caudal fin, possibly of the 
same individual as the preceding, labelled “ Caturus maxi - 
mus or new ? ’* by Agassiz. All the scales are ornamented, 
and at the base of the upper caudal lobe one ridge-scale is 
