CESTRACIOXTIDJE. 
317 
30564-68. Two hindermost teeth, one of series iv., two of series in., 
and a much abraded tooth of series n.: Atford. 
Purchased, 1856. 
P. 2659, P. 2659 a, b. Twenty-four teeth, mostly flat, hut five re¬ 
ferable to an anterior series; Atford, A tooth of series it. 
is shown in PI. XY. fig. 7, and another of series in. in 
PI. XY. fig. 6. Enniskillen Coll. 
32353. Tooth of series it. ; Malmesbury, Wiltshire. 
Purchased, 1857. 
40535. Two flat teeth; Wiltshire. Purchased, 1867. 
(v.) Cornbrash. 
47132. Thirteen teeth of small size ; Botolph’s Bridge, near Peter¬ 
borough. Sharp Coll . 
47133. Nine teeth, mostly larger; near Peterborough. Sharp Coll . 
Strophodus tenuis, Agassiz. 
1838. Strophodus tenuis , L. Agassiz, Poiss. Foss. vol. iii. p. 127, pi. xviii. 
figs. 16-25. 
1858. Strophodus tenuis, F. A. Quenstedt, Der Jura, p. 340, pi. xlvi. 
figs. 12, 13. 
1871. Strophodus tenuis, J. Phillips, Geol. Oxford, p. 177, diagr. xxxvii. 
As/- r)pucA<P£iS. 
fig. 9. 
Type. Detached teeth. 
Teeth long and narrow, the crown in all except the hindermost 
rows and series iy. considerably elevated; anterior teeth much 
arched, with a longitudinal keel, superficial coronal ornament as in 
S. magnus , except in the anterior teeth. Of the hindermost series, 
the teeth are small and oval; those of series no. iv. (Agass., fig. 21) 
seem to be only gently rounded; and those of no. iii. (Agass., 
figs. 17-20) are much longer than the latter, the crown raised and 
tumid at one half or one third the distance from its anterior ex¬ 
tremity, and bent downwards and forwards in front. The teeth 
presumably referable to series no. ii. (Agass., figs. 22, 23) are much 
elevated mesially, slightly keeled, and narrowed at each extremity, 
though especially in front; and those of the most anterior paired 
series (Agass., figs. 24, 25) are strongly arched, the apex of the 
crown being a blunt point and the longitudinal keel prominent. 
There is also evidence of a high-crowned median symphysial row 
of teeth in one of the jaws. 
Form. Sf Loc. Bathonian : Oxfordshire (Stonesfield Slate), North¬ 
amptonshire, Lincolnshire, Gloucestershire, and Wiltshire. Brown 
Jura (3 : Wiirtemberg. 
