ENCHODONTID^E. 
109 
Dentary bone with about eleven large teeth, of which the foremost 
does not much exceed the others in size. 
form, df Loc. Upper Senonian : Belgium. Danian : Holland. 
42978 d. Fragment of left dentary, with foremost largo tooth; 
Danian, Maastricht. Van Breda Coll. 
30750. Detached tooth ; Craie phosphatee, Ciply, near Mons. 
Purchased. 
Enchodus longidens (Pictet). 
(?) 1849. Isodus sulcatm, J. J. Heckel, in Russegger’s Reisen, vol. ii. 
pt. iii. p. 343, pi. xxiii. fig. 4. [Dentary bone.] 
1850. Burypholis longidens, F. J. Pictet, Poiss. Foss. Mont Liban, 
p. 31, pi. v. fig. 1. 
1866. Burypholis longidens, Pictet & Humbert, Nonv. Iiech. Poiss. 
Foss. Mont Liban, p. 105, pi. xvii. 
1882. Burypholis longidens, F. Bassani, Denkscbr. k. Akad. M iss., 
math.-naturw. Cl. vol. xlv. p. 274, pi. xii. 
1887. Burypholis longidens, J. W. Davis, Trans. Roy. Dublin hoc. [2] 
vol. iii. pp. 597, 002. 
Type. Distorted small fish ; Geneva Museum. 
A small species known by nearly complete fishes attaining a 
tangth of about 0'3. Length of head with opercular apparatus 
In uch exceeding the maximum depth of the trunk and occupying 
one third of the total length to the base of the caudal fin. Ihe 
mandible, operculum, and most of the other external bones orna- 
mented with fine tuberculated ridges. Palatine bone produced 
lorwards as a short cylindrical extension in advance ot the ethmoid 
articulation, and the long slender tooth fixed at its extremity ; 
outer face of premaxilla apparently smooth ; dentary rapidly con- 
tracting almost to a point at the symphysis, and the maximum 
depth of the mandibular ramus contained about three and a half or 
four times in its total length. Teeth slender, much compressed, 
and often delicately striated. Vertebra# about 40 in number, 24 
being caudal. Pelvic fins somewhat smaller than the pectorals, 
arising opposite the anterior half of the dorsal; dorsal fin with 16 
ra ys, its depth about equalling that of the trunk at its insertion ; anal 
bn much smaller, with 18 rays, arising nearer to the pelvic fins than 
to the caudal. Dorsal scutes three or four in number, broadly oval, 
a nd ornamented with delicate radiating lines. 
form, tj' Loc. Upper Cretaceous: Sahel Alma, Mount Lebanon. 
49505. Imperfect fish, a little elongated by distortion. The head 
is crushed forwards, exhibiting the proportions of the 
mandible and part of its ornamentation, besides remains 
