SCOPELID^. 
'2iyj 
two thirds as long as the posterior tooth, and the length of the 
latter less than the interspace between the two teeth, also less than 
half the length of the part of the premaxilla in front of its insertion. 
Mandible mueh attenuated in front, with two relatively large teeth 
in the middle of the dental series ; the small recurved teeth in 
advance of these gradually increasing in size backwards. 
Form. Log. Albian (Gault) : Folkestone, Kent. 
37930. Type specimen, being a fragment apparently of the hinder 
part of the premaxilla. Purchased, 1863. 
47204. Imperfect left premaxilla associated with the greater part 
of the mandible and remains of three vertebrm, shown of 
the natural size in PL XIII. fig. 3. The premaxilla 
{'pmoc.') is imperfect at each end, and fractured near its 
middle where it seems to be accidentally bent. Immedi¬ 
ately in front of this fracture, the largest tooth is shown, 
with its distal portion obscured by the remains of the 
mandible, A slightly smaller tooth is imperfectly pre¬ 
served a little further back ; and then follow three or four 
still smaller spaced teeth, which are much laterally-com¬ 
pressed and vertically striated at the base. The dentary 
(cL) is considerably fractured and broken away behind, 
but its outer face is shown to have been smooth and rather 
tumid, impressed only by a deep longitudinal groove just 
below its upper border. Its anterior recurved teeth are 
preserved on both sides of the jaw, gradually increasing 
in size and becoming more widely spaced backwards ; the 
very large middle teeth are wanting in the fossil; the 
hinder teeth are proved to have been very small. 
Gardner Coll, 
47204 a. Eight and left premaxillae probably of one and the same 
individual, that of the right side shown of the natural size 
from the inner aspect in PI. XIII, fig. 4. Only the 
anterior half of the bone is preserved, and it seems to 
represent a larger fish than the last specimen. It tapers 
to a point in front, while its inner face is smooth and 
flattened for articulation with the elongated ethmoidal 
region. Its oral face gradually widens backwards and 
forms a gently hollowed trough, which is filled at two 
points by the tumid bases of the large teeth. Eoth these 
teeth are well-preserved, exhibiting a laterally compressed, 
straight, lanceolate crown, finely striated at its base. The 
s2 
