404 
ACTINOPTERYGII. 
the natural size, in fig. 41, no. 3, three transverse sections 
being added in nos. 3 a-c. Harford Coll. 
33254. Imperfect rostrum; English Chalk. Taylor Coll. 
P. 612. Imperfect rostrum noticed and figured by Dixon, Geol. 
Sussex, p. 374, pi. xxxii.* fig. 1, under the name of 
Saurocephalus lanciformis, and termed Xiphias clixoni by 
Leidy, loc. cit. ; Chalk, Kent. Egerton Coll. 
P. 1801. Another imperfect rostrum showing the forward triangular 
extension of the flattened cranial roof; English Chalk. 
Egerton Coll. 
33310. Fragment of rostrum ; Chalk, Burham, Kent. 
Purchased, 1858. 
49103. Crushed base of rostrum ; English Chalk. 
Mrs. Smith’s Coll. 
49759. Fragment of rostrum ; Chalk, Glynde, Lewes. 
Ccipron Coll. 
35154. Imperfect rostrum, showing base of one vomerine tooth; 
Cambridge Greensand, Cambridge. Purchased , 1859. 
P. 1802. Two fragments of distal end of rostrum; Cambridge 
Greensand. Egerton Coll. 
35155. Imperfect base of rostrum ; Cambridge Greensand. 
Purchased , 1859. 
25709. Imperfect base of rostrum showing vomerine teeth, described 
and figured by W. Davies, Geol. Mag. [2] vol. v. p. 260, 
pi. viii. fig. 3 ; Chalk, Amberley, Sussex. Dixon Coll. 
32747. Another fragment of base of rostrum showing vomerine 
tooth ; Chalk, Burham. Purchased , 1857. 
49012. Portion of right premaxilla, figured by Dixon, op. cit. 
pi. xxxiv. fig. 11; Chalk, Burham. Mrs. Smith’s Coll. 
P. 3954. Larger but more imperfect portion of premaxilla, showing 
six large teeth and one successional tooth ; Chalk, Kent. 
EnnisJcillen Coll. 
49820. Fragment of premaxilla ; Chalk, Glynde. Capron Coll. 
P. 5651. Bight maxilla ; Lower Chalk, Burham. Harford Coll. 
