FACH VCORMIDiE. 
401 
1888. Protosphyrcena ferox, A. S. Woodward, Proc. Geol. Assoc, vol. x. 
p. 321. 
1895. Protosphyrcenci ferox, A. S. Woodward, Geol. Mag. [4] vol. ii. 
p. 211, woodcut fig. 3. 
Pyjoe. Teeth ; British Museum. 
The type species. Rostrum much elongated and attaining a 
length of about 03 with a transverse diameter of 0’05 at its base 
where the vomerine teeth are implanted ; circular in transverse 
section throughout its whole length, except within a short distance 
of the vomerine teeth, where it becomes slightly flattened on the 
upper part of its sides and the top and passes into the gradually 
widening flattened cranial roof ; its external surface ornamented 
with reticulating rugae, of which the most prominent are longitudi¬ 
nally directed. Cranial roof more finely rugose and tuberculated. 
Teeth sometimes smooth, but usually with slight longitudinal 
wrinkles, which cause splits in the enamel of the fossils ; the acute 
edges not serrated. Symphysial extremity of each dentary bearing 
three large teeth, and its oral border toothless where apposed to 
the dentigerous part of the splenial; splenial with two large teeth, 
and smaller teeth in front but none behind. 
Form. Sf Loc. Senoman, Turonian, and Cenomanian: S.E. Eng-„, - 
land. (?) Cenomanian : Kursk, Russia. 
P. 6529. Very fine rostrum, measuring 0-28 from the vomerine 
teeth to its incomplete distal extremity, showing a frag¬ 
ment of the anterior part of the cranial roof and associated 
with pyritised remains of the anterior half of the right 
mandibular ramus ; Lower Chalk, Blue Bell Hill, Burham, 
Kent. The internal cavity of the rostrum at its base is 
subdivided by a median vertical septum which is shown 
considerably in advance of the vomerine teeth; and the 
outer surface of the rostrum exhibits the characteristic 
ornamentation. The vomerine tooth of the right side is 
completely preserved, but on the left there is only the 
apex of what seems to be a successional tooth. Two of 
the much larger anteriorly-projecting teeth of the dentary 
are also exposed; and part of the series of diminutive 
teeth is preserved on its oral border behind the region of 
the splenial. Presented by S. J. Hawkins , Esq., 1891. 
P. 3955-56. A much abraded, fractured, and partially crushed 
rostrum, associated with the mandible and other frag¬ 
ments ; Chalk, Kent. Only the right vomerine tooth is 
preserved, and the hollow portion of rostrum above it is 
2 D 
(? uJ'S 
0^1 
y 
PART III. 
