508 
ACTINOPTERYGII. 
Leptolepis macrophthalmus, Egerton. 
[Plate XVIII. fig. 3.] 
1845. Leptolepis macrophthalmus , Sir P. Egerton, Quart. Journ. Geol. 
Soc. vol. i. p. 231. 
1852. Leptolepis macrophthalmus, Sir P. Egerton, Figs. & Descript. 
Brit. Organic Remains, dec. vi. (Mem. Geol. Surv.), no. 8, pi. viii. 
Type. Imperfect fishes; British Museum. 
A large and comparatively slender species, attaining a length of 
about 0-24. Length of head with opercular apparatus much ex¬ 
ceeding the maximum depth of the trunk and contained little more 
than four times in the total length of the fish ; width of caudal 
pedicle equalling nearly one-half of the maximum depth of the 
abdominal region. Vertebrae and fins apparently as in L. dubius. 
Form. Sf Loc. Oxfordian: Wiltshire. 
All the following specimens were obtained from Christian Malford, 
near Chippenham:— 
P. 575, P. 576, P. 3677. Three specimens described and figured by 
Egerton, loc. cit. 1852, to be regarded as the type speci¬ 
mens. The original of fig. 2, loc. cit., is a nearly complete 
fish 0*13 in length, while the original of fig. 3 is very 
imperfect and wants the caudal region. 
Egerton Sf Enniskillen Colls. 
46314. Fine specimen 0*235 in length showing the axial skeleton, 
the abdominal vertebrae apparently with broad transverse 
processes by which the delicate ribs are supported 
(Pi. XVIII. fig. 3). Cunnington Coll. 
20090. Ten imperfect fishes, variously preserved, and one head with 
opercular apparatus and pectoral fin. The radiating 
markings on the preoperculum are confined to its lower 
limb and are fine and numerous. Purchased , 1846. 
19959. Small fish, with imperfect head and tail. Purchased , 1846. 
21435. Small specimen displaying the paired fins, the pectoral with 
not less than 16, the pelvic with not less than 9 rays. 
The latter are more than two-thirds as long as the former. 
Purchased , 1847. 
24676, 26470. Two large and two small specimens. The pelvic 
fin-supports are exhibited. Purchased , 1850-51. 
P. 936, P. 5145-46. One large fragment and seven small specimens 
more or less imperfect. Egerton Coll. 
