329 
P. 1295. Remains of a large head, the pterygo-quadrate cartilage 
originally measuring about 0*11 in length; Snodland, 
Kent. Several teeth, are preserved, and only differ from 
those of S. clubrisiensis in the remarkable smoothness of 
their coronal surface; the shagreen-granules resemble 
those of this species; and the fragmentary cartilages also 
exhibit no notable differences. It thus seems probable 
that the fossil pertains to S. dubrisiensis, and indicates 
the large size to which this fish sometimes attained. 
Eger ton Coll. 
Synechodus tenuis, sp. nov. 
Type. Detached anterior tooth, shown in PL XI. fig. 21. 
Coronal cusp of the large anterior teeth more slender and pro¬ 
duced than in the type species, the superficial wrinkles less conspi¬ 
cuous, and apparently confined to the basal portion of the crown ; 
base-line of the crown much arched. 
Form. 6f Loc. Neocomian : Kent. 
9297. The type specimen, shown, of three times the natural size, 
in PL XI. fig. 21, and two less perfect teeth; Lower 
Mantell Coll . 
Greensand, Maidstone. 
39218. Tooth; Maidstone. 
BoiuerbanJc Coll. 
Synechodus recurvus (Trautschold). 
1877. Sphenodus recurvus, II. Trautschold, Bull. Soc. Imp. Nat. Moscou, 
pt. ii. p. 335, pi. v. fig. 4. 
/K - 
Type. Detached anterior tooth. 
The specimens mentioned below indicate a large species, with the 
teeth of the anterior half of the jaw so similar to those of Syne¬ 
chodus that it may be provisionally associated with this genus. 
The principal cone is high and compressed, and all the lateral cones 
slender, pointed, and well separated; superficial ornament confined 
to short vertical wrinkles at the base of the crown. The base-line 
of the dental crown is almost straight, and the anterior margin of 
the flattened root crimped. 
If the generic determination be correct, the most posterior teeth 
still remain unknown. 
Form. Sf Loc. Cenomanian : S. Russia. Gault: Kent. 
P. 5562. Two fragmentary teeth ; Cenomanian, Saratov, Russia. 
By exchange, 1888. 
