MTXIOBATID^. 
117 
40254. Connected scries of six median teeth, young. 
Edwards Coll. 
35658. 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 m. E-jerton Coll. 
Lower Dentition. — (i.) London Clay, Isle of Sheppey. 
P. 3038. Type specimen. Ennisldllen Coll. 
28764. Conneeted 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. 
Ennisldllen 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. Five fine specimens ; the last noticed, loc. cit. p. 45. 
Bowerhank Coll. 
25613. Specimen figured by Dixon, op. cit. pi. x. figs. 3, 4. 
Dixon CoTl. 
P. 3039. Connected scries of 13 median teeth, with two lateral rows 
on each side. Ennisldllen Coll. 
P. 1505. Three fragmentary examples. Ejerton Coll. 
P. 1505 c, P. 1507 c. Two small specimens; noticed, loc. cit. p. 45. 
Eja-ion Coll. 
P. 436. Small abraded connected series of seven median teeth. 
Purchased, 1882. 
P. 5426. Two small specimens. 
Presented hy P. E. Coombe, Esq., 1888. 
