118 
SELACHn. 
(iii.) Barton Clay, Barton Cliff. 
P. 1500, Connected series of 12 median teeth, with two lateral rows 
on each side. Egerton Coll- 
(iv.) Lower Eocene, near Brussels, Belgium. 
42856. Connected series of six median teeth, with two lateral rows. 
Van Breda Coll. 
P. 1510. Fragment of dentition, showing three lateral rows of teeth. 
Egerton Coll- 
Myliobatis latidens, A. S. Woodward. 
1888. Myliobatis latidens^ A. S. Woodward, Ann, Mag. Nat. Hist. [6] 
vol. i. p. 45, pi. i. figs. 11, 12. 
Type- Lower dentition ; British Museum. 
A small species. Coronal contour of lower dentition flat, that of 
the upper only slightly transversely arched. Median teeth in adult 
not loss than eight times as broad as long ; lateral teeth at least as 
broad as long. 
Form. ^ Loe. Bracklesham Bods (Middle Eocene) : Sussex. 
25630 a. One of the type specimens ; figured, loc- cit- pi. i- fiS’ 
Diivon Coll- 
P. 1507 g. Second type specimen; figured, loc. cit. pi. i. Ag- 
Egerton Coll- 
25630, 25637, 25672. Three similar specimens, the second showino 
two series of lateral tooth on each side. Dixon CoU- 
P. 1506 a. Abraded series of six median teeth of large individual , 
referred to, loc. cit. p. 46. Egerton Coll- 
25656. Portion of upper dentition doubtfully assigned to this species , 
figured, loc. cit. ifi. i. fig. 13. Divon Coll- 
The two species M. gyratus and M.jugalis, ascribed by Agassiz 
to the London Clay of Sheppey, are probably founded upon the 
abraded dentition of one of the foregoing species. 
Myliobatis stokesii, Agassiz. 
1843. Myliobatis stolcesii, L. Agassiz, Polss. Foss. vol. iii. p. 318, pi. xlvii. 
figs. 1, 2. 
'I\jpe. Half of lower dentition ; British Museum. 
Crown of median tooth very thick, though flattened, in the middle 
' Poiss. Foss. vol. iii. 1843, pp. 323, 324, pi. xlvi. figs. 1-3, pi. xlvii. figs- 13, 14' 
