MTLIOBATID^E. 
117 
40254. Connected series of six median teeth, young. 
Edwards Coll. 
25658. Connected series of five median teeth, with two of the first 
lateral row ; coronal surface mostly much abraded, having 
the appearance described by Agassiz in the so-called M. 
punctatus. Dixon Coll. 
P. 1507 f. Three median teeth, with the first lateral row of each 
side, belonging to a very young individual either of this 
species or M. striatus. Each median tooth measures 
approximately 0*011 m. by 0*002 in. Egerton Coll. 
Lower Dentition. —(i.) London Clay, Isle of Sheppey. 
P. 3038. Type specimen. Enniskillen Coll . 
28764. Connected series of nine median teeth, with remains of two 
lateral rows. Purchased , 1853. 
P. 3042. Very large specimen, with first lateral row broad and 
irregular; noticed by the present writer, loc. cit. p. 45. 
Enniskillen Coll, 
35693. Fragmentary dentition of young individual. 
Purchased , 1859. 
(ii.) Bracklesham Beds, Bracklesham Bay. 
25669-70, 25672. Three examples of moderate size, and one small; 
the first is noticed, loc. cit. p. 45. Dixon Coll. 
38850-54. Live fine specimens; the last noticed, loc. cit. p. 45. 
Bowerbank Coll. 
25613. Specimen figured by Dixon, op. cit. pi. x. figs. 3, 4. 
Dixon Coll . 
P. 3039. Connected series of 13 median teeth, with two lateral rows 
on each side. Enniskillen Coll. 
P. 1505. Three fragmentary examples. 
Egerton Coll. 
P. 1505 c, P. 1507 c. Two small specimens; noticed, loc. cit. p. 45. 
Egerton Coll. 
P. 436. Small abraded connected series of seven median teeth. 
Purchased , 1882. 
P. 5426. Two small specimens. 
Presented by P. E. Coombe, Esq., 1888. 
