196 
ACTI]V"OPTERYGTI. 
fractured right palatine ('pal.) is exposed from the inner 
aspect on the left side of the fossil; and there are 
obscured remains of the ectopterygoid (ecpt.) on both 
sides. History unknown. 
P. 6661. Imperfect right palatine with tooth exhibiting unusually 
conspicuous striations, shown of the natural size from the 
outer aspect in PI. XI. fig. 5; probably from the Kentish 
Chalk, Harford Coll. 
P. 398. More imperfect right palatine, with tooth less elongated ; 
English Chalk. Presented hy the Eay'l of Dude, 1881. 
25810. Eemains of larger palatine, the tooth only in impression ; 
English Chalk. Dixon Coll. 
P. 6459. Smaller right palatine; English Chalk. Heckles Coll. 
Enchodus faujasi, Agassiz. 
[Plate XI. fig. 6.] 
1799. Figure by Faujas St. Fond, Hist, Nat, Mont. St. Pierre, 
Maestricht, pi. xix. fig. 10. 
1843-44. Enchodus favjasii, L. Agassiz, Poiss. Foss. yoI. y. pt. i, pp. 6, 
65, pi. xxix. fig. 3. 
1893. Enchodus faujasi, L. Hollo, Bull. Soc. Beige Geol. yoI. vi., 
Proc.-Verb. p. 185, figs. 1, 3. 
Type. Dentary bone ; Paris Museum of Natural History. 
A large species, known only by fragmentary specimens', the 
mandible attaining a length of at least O’lo. The sides of the 
cranial roof marked with a few sharp ridges, not tuberculated ; the 
outer face of the mandible remarkably smooth, not ornamented with 
tubercles, a few ridges and grooves radiating from the symphysis on 
the dentary, from the mandibular articulation on the articulo- 
angular bone; premaxilla slightly and irregularly ridged; opercular 
apparatus ornamented with very fine tubercles in radiating lines. 
Palatine bone short and stout, the ethmoid articulation extending 
to its anterior end, where the long and slender tooth is directed 
downwards and a little forwards; dentary rapidly contracting 
almost to a point at the symphysis ; the mandibular ramus con¬ 
siderably deepened behind, its maximum depth about equalling 
one third of its total length; about eight large mandibular teeth, 
all slender, some often irregularly curved, the foremost much the 
largest. 
Form. Log. Danian : Holland. 
42976. Fine head associated with remains of the vertebral column; 
