242 
ACTINOPTERYGII. 
and partly depressed, but it seems to have comprised 
about 10 rays, the length of the longest approximately 
equal to the depth of the trunk at its insertion. The 
anal and caudal fins are also imperfect. The large, very 
finely serrated scales (fig. 5 a) are especially well seen in 
the caudal region. Purchased, 1897. 
The following specimens seem to be referable to an undetermined 
species of Sardinioides, and are interesting as showing the small 
parietal bones meeting in the middle line of the skull:— 
P. 3977. Vertically crushed imperfect fish, originally about 0*2 in 
length ; English Chalk. The bones of the cranial roof 
exhibit a faint rugose ornament, and the short and broad 
median ethmoid projects forwards in front. The parietals 
are very small, but clearly overlie the supraoccipital and 
meet in the middle line. There is a large supraorbital 
bone on each side. The characteristic jaws and scaly 
cheeks are seen, while the opercular bones exhibit the 
same rugosity as the cranial roof. A few vertebral 
centra are exposed, and there are remains of the pectoral, 
pelvic, and dorsal fins. The large, feebly ctenoid scales 
are scattered. Ennishillen Coll. 
49057. Imperfect head ; English Chalk. Mrs. Smith’s Coll. 
The following names have been given to fragments, which may 
be imperfect and distorted specimens of one or other of the West¬ 
phalian species described above :— 
Sardinioides macroj^terygius, W. von der Marck, Palseontogr. 
vol. xxxi. (1885), p. 256, pi. xxiii. fig. 3.—Upper Cre¬ 
taceous ; Sendenhorst, Westphalia. [Distorted trunk; 
Academy of Miinster.] 
Sardinioides minutus, W. von der Marck, loc. cit. vol. xxxi. (1885), 
p. 255, pi. xxiii. fig. 2.—Ibid. [Ditto.] 
Sardinioides tenuicaudus, W. von der Marck, loc. cit. vol. xi. 
(1863), p. 48, pi. vii. fig. 8.—Ibid. [Ditto.] 
An examination of the undermentioned specimen has convinced 
the present writer that this must also be referred to the genus 
Sardinioides, the typical scales being clearly distinguishable, and 
the vertical banding of the fossil being due to the state of pre¬ 
servation of the muscle-plates :— 
