404 
ACTINOPTERTCM. 
P. 7653. Portion of trunk; English Chalk. Purchased, 189t>. 
32340-41. Imperfect fish about 0-3 in length showing proportions 
of trunk, also two fragments ; near Maidstone. 
Purchased, 18a7. 
33486, 39431. Two large imperfect specimens in association, and 
a detached trunk ; Kent. One of the two specimens 
displays the head, which seems to have been identical 
with that of H. lewesiensis. 
Purchased, 1858, and Bowerbanlc Coll . 
33129. Imperfect small head and anterior part of trunk ; Kent. 
Purchased, 185/. 
Hoplopteryx lundensis, Davis. 
1890. Hoplopteryx lundensis, J. W. Davis, Trans. Roy. Dublin Soc. [2j 
vol. iv. p. 417, pi. xliii. figs. 1-3. 
Type. Imperfect fish; University Geological Museum, Lund. 
An elongated species, attaining a length of about 0'25. Longth 
of head with opercular apparatus exceeding the maximum depth of 
trunk, which is contained twice in the longth from the clavicle to 
the base of the eaudal fin. Dorsal fin occupying more than half 
the length of the back, with about 9 stout spines and 8 to 10 
divided rays ; anal fin with 3 stout spines. 
Form. § Lac. Upper Cretaceous (Danian): Limhamn, Scania. 
Not represented in the Collection. 
Hoplopteryx lewisi (Davis). 
1887. Pycnosterinx leioisit, J. W. Davis, Trans. Roy. Dublin Soc. [-’] 
vol. iii. p. 535, pi. xxvii. fig. 5. 
Type. Imperfect fish ; British Museum. 
A small, deep-bodied species about 0'1 in length, the maximum 
depth of the trunk approximately equalling its length from the 
pectoral arch to tho baso of the caudal fin. Dorsal fin apparently 
occupying slightly more than half tho longth of the back, with 8 
nearly smooth spines and 8 very stout divided rays, the length of 
the longest spine less than half the depth of the trunk at its 
insertion ; anal fin with 4 nearly smooth spines, gradually increasing 
in length backwards, followed by 8 very stout divided rays, this fin 
arising opposite the foremost divided ray of the dorsal. Scales 
feebly serrated. 
