218 
ACT I .V 0 PT FRY GIT. 
49750. Fragment displaying left premaxilla from the inner aspect; 
Brighton. This bone, which is imperfect behind, bears 
the characteristic minute teeth. Capron Coll. 
49785. Fragment of small skull showing portion of ossified scler 
otic ; Brighton. Capron Coll. 
43392. Small cranium and part of jaws ; English Chalk. 
Bp exchange, IS (2. 
25804, 25813, 25896. Remains of jaws; Sussex. Dixon Coll. 
P- 3657 h. Portion of dentary with teeth; Lewes. 
Enniskillen Coll. 
Halec microlepis (Davis). 
188/. Phylactocep/ialus microlepis, J. W. Davis, Trans. Bov. Dublin 
Soc. [2] vol. iii. p. 605, pi. xxxv. fig. 2. 
1888, Pomognathus, A. S. Woodward, Ann. Mag. Nat. Hist. [6] ' 0 ' 
p. 355. 
Type. Nearly complete fish ; British Museum. , 
The type species of the so-called Phi/lacfocephalus, attaining a lengt 
of about 0-2. Lcngl h of head with opercular apparatus scarce y 
exceeding the maximum depth of the trunk, which is containe 
somewhat more than twice in the length from the pectoral arc ^ 
the base of the caudal fin. Length of mandible about equa 
the depth of the head at the occiput. Opercular apparatus a; ^ 
external ornament as in B, eupierygius. Vertebra; about o 
number. Dorsal fin wiih about 17 rays, occupying the secon 
quarter of the back, and pelvic fins opposed to its hinder ha 
anal fin very small, with 10 or 1 1 rays, arising twice as far r0 
the pelvic fins as from the caudal. Scales smooth. 
Form. ,j- Loc. Tipper Cretaceous : Mt. Lebanon, Syria. 
P. 4757. Type specimen unsatisfactorily described and figured ^ 
Davis, loc.cit.-, Hakel. The head and opcrcuiar bon 
preserved are chiefly those of the right side expose; r 
within. A fragment of the thickened ectoptem go'^^ 
seen bearing the characteristic teeth ; immediately e ^ 
it are remains of the slender maxilla, with spa 
teeth at its hinder end. The right mandibular ram j^ e< j 
indicated chiefly as an impression of its tubercu • ^ 
outer face; and fragments of the left ramus occur 
this, with apparently an overlapping trace of < ie ^ ^ 
premaxilla. The characteristic preoperculum, opercu 
