120 
SELACHII. 
P. 5580. Type specimen ; a median tooth, measuring nearly 0*05 in 
breadth and 0*01 in length; much abraded. 
Harford Coll. 
44043. Two thirds of median tooth; Woodbridge. Purchased, 1873. 
30905 a. Fragment of a similar smaller tooth ; "Woodbridge. 
Purchased, 1856. 
Nos. 43315-6 ( Purchased , 1872) are two abraded thick-crowned 
median teeth of Myliobatis or Aetobatis, from the Fed Crag of Wood- 
bridge, Suffolk. 
The following detached barbed caudal spines appear to be generi- 
cally indeterminable, and may probably in part be referable to 
unknown Trygonidae:— 
(i.) Bracldesham Beds, Bracklesham Bay, Sussex. 
25701-2. Fragment of “ Myliobatis oweni, Agass.,” 1 figured in 
Dixon’s Foss. Suss. pi. x. fig. 10. Also two more com¬ 
plete examples. Dixon Coll. 
28085. One fragmentary specimen similar to the last, and one other 
smaller. Presented by F. E. Edwards, Esq., 1852. 
25702 c. Specimen of Myliobatis toliajoicus, Agass. 2 , figured by Dixon, 
ojo. cit. pi. x. fig. 36. Dixon Coll. 
25702 a. Comparatively smooth example. 
25702 b. Fragment of small unabraded spine. 
38861-2. Two fragmentary examples. 
P. 1511 a, b. Nearly complete small spines. 
Dixon Coll. 
Dixon Coll. 
Boiverbank Coll. 
Egerton Coll . 
(ii.) Barton Clay, Barton Cliff, Hampshire. 
P. 527. Fndescribed type specimen of Myliobatis marginalis, Agassiz, 
tom. cit. p. 331. Eyerton Coll. 
28878. Nearly complete much larger spine. Daniels Coll. 
(iii.) Foreign localities. 
P. 1512. Base of spine. Eocene, near Brussels. Eyerton Coll. 
36818. Fragment from the Miocene of the Isle of Gozo. 
Presented by Prof. A. Leith Adams, 1862. 
P. 1513. Broken fragments from the Eocene of Clarke’s Co., Alabama, 
U.S.A. Eyerton Coll. 
1 Poiss. Foss. vol. iii. p. 331, pi. xlv. figs. 11-13. 
2 Loc. cit. pi. xlv. figs. 21-23. 
