38 
ACTIN0PTEEX6I1. 
25791-92. Imperfect fragment apparently of dentary and another 
of right maxilla, the latter figured by Dixon, op. ciL 
pi. xxxiv. figs. 10, 10 a, and hypothetically ascribed to 
this species ; Steyning, Sussex. Dixon CoU. 
Pachyrhizodus dibleyi, sp. nov. 
[Text-figure 3.] 
Type. Portions of upper jaw; British Museum. 
verj arge robust species, known only by portions of the upp er 
jaw. All teeth with a remarkably stout and much-expanded base, 
and a comparatively short stout crown which is not incurved at the 
apex. remaxilla deeper than in other known species, and its 
entigerous portion less than half as broad as long. Maxillary 
teeth in very irregular series, those in the hinder portion excessively 
compressed antero-posteriorly. 
Form, cj- Loc. Turonian : Kont. 
P- 9115. Type specimen discovered by Mr. G. E. Dihley, and com- 
prising the associated imperfect left premaxilla, right and 
left maxillae, part of ontopterygoid, and other fragments ; 
Lower Chalk, Blue Bell Hill, Burkam, Kent. The general 
torn of the premaxilla (fig. 3, 1, 1 a) is well shown, although 
its outer border is very imperfect and partly broken 
away , its characteristic inner tooth is complete, an 
there is a socket for a similar tooth in front of it ; bu , 
there are only fragmentary remains of throe of the small 
marginal teeth. The right and left maxillm are similar 
in s ape and size, so far as they can he compared, bu 
e teeth of tko two sides are very different and qnite 
irregular in disposition. The outer aspect of the loft 
maxilla u shown in fig. 3 II, but it is incomplete at the 
under end, and most of the teeth are imperfect ° r _ 
wanting. Tbe antero-posterior compression of som e 0 
he teeth is indicated in fig. 3 II a, which represents 
t the oral border of the same bone ; one of the teeth m 
P aced and displays its relatively large base. 
Purchased, l® 99, 
p . 4806. Portion of maxilla; near Maidstone. 
Presented bp Sir Richard Owen, K.C.B., 1®® 
