16 
ACTINOPTEPvYGlI. 
P. 5681. Type specimen, described and figured from the superior 
aspect, loc. cif. 1894, pi. xliii. fig. 2, and right mandibular 
ramus figured ibid. fig. 2 a ; Lower Chalk, Burham, Kent. 
Harford Coll. 
P. 1854. Imperfect head and abdominal region, much fractured, 
labelled Aidolepis ippiis by Agassiz, and probably utilised 
by him in his description of that species ; Burham. The 
right frontal bone is figured loc. cit. 1894, pi. xliii. fig. 3, 
and the right maxilla with supramaxillaries ibid. fig. 3 a. 
Egerton Coll. 
49903. Head and opercular apparatus, with remains of pectoral fin 
and squamation, the former figured loc. cit. L^94, pi. xliii. 
fig. 5 ; Lower Chalk, Lewes. Capron Coll. 
- OsoE^e^oides gracilis, Davis. ./72 
[Plate II. figs. 1, 2.] 
1887. Osmeroides gracilis, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. iii. p. 559, pi. xxxi. figs. 2, 3. 
1887. Osmeroides latus, J. W. Davis, ibid. p. 561, pi. xxxi. fig. 1 
[Imperfect distorted fish ; Edinburgh Museum.] 
(P) 1887. Osmeroides brevis. J, W. Davis, ibid. p. 560, pi. xxxii. fig. 1. 
[Ditto.] 
(?) 1887. Osm//oides dubius, J. W. Davis, ibid. p. 565, pi. xxxi. fig. 4. 
^ . [Ditto.] ' 
Type. Imperfect fish ; Edinburgh Museum of Science and Art. 
Length of head with opercular apparatus nearly equalling half 
that of the trunk from the pectoral arch to the base of the caudal 
fin. Cranial roof, opercular bones, and upper branchiostegal rays 
smooth and unornamented; a few minute tritoral teeth within the 
mouth. About 40 abdominal and 20 caudal vertebrae. Dorsal fin 
comprising 20 rays, the distance between its origin and the occiput 
somewhat less than that between its termination and the base of the 
caudal tin ; pelvic fins opposite the hinder half of the dorsal; anal 
fin small, with not more/than 8 or 10 rays, arising nearer to the 
caudal than to the pelvic pair. Radiating grooves in overlapped 
portion of scales especially conspicuous. 
The type specimen of this species is evidently lengthened by 
crushing, and the rotund form of the fish causes the mode of 
distortion of the different specimens to be very varied. It is thus 
difficult to determine the original proportions of the species. 
Form. Loc. Upper Cretaceous: Sahel Alma, Mount Lebanon. 
kfci 
