CF^TKACJONTIDJS. 
269 
11123, 11124. Three typical teeth, one shown, of the natural size, 
in PI. XI. fig. 2 ; Stonesfleld. Mantdl Coll. 
28497. Two similar teeth ; Stonesfleld. Dixon Coll. 
35494. Tooth with relatively small anterior denticles, described 
and flgured by the present writer, loc. cit. p. 257, pi. vi. 
flg. 1 ; Stonesfleld. Purchased, 1800. 
38026, 39778. Two teeth; Stonesfleld. Purchased, 18G2-63. 
39203. Four typieal teeth, one of the hindermost shown, of the 
natural size, in PI. XI. flg. 1 ; Stonesfleld. 
Bowerhanlc Coll. 
47974. Two similar teeth ; Stonesfleld. 
Presented by the Hon. llobert Marshain, 1877. 
P. 2182. Four teeth ; Stonesfleld. Eyerton Coll. 
P. 2186, P. 2186 a. Two tooth, one with relatively small anterior 
denticles and serrations, described and flgured by the pre- 
sent writer, loc. cit. p. 257, pi. vi. flg. 2 ; probably from 
the Great Oolite of Bath. Eyerton Coll. 
P. 2845. Two teeth, one flgured, of the natural size, in PI. XI. 
flg. 3 ; Stonesfleld. Enniskillen Coll. 
P. 5103. Typical tooth ; Stonesfleld. 
Presented by J. E. Lee, Esq., 1885. 
11139. Two teeth of the form named II. jugosus by Phillips ; Stones- 
field. So far as can be determined from these and the 
following specimens, it seems most jnobable that they are 
the posterior teeth of II. polyprion. Mantdl Coll. 
28590. Two similar teeth, one approaching the more typical II. 
polyprion ; Eyeford. Purchased, 1853. 
P. 2182 a, P. 2845 b. Two similar teeth ; Stonesfleld. 
Eyerton ^ Enniskillen Colls. 
P. 2182 b, P. 2845 a. Two anterior teeth, either of this species or 
H. levis ; Stonesfleld. Egerton ^ Enniskillen Colls. 
Hybodus levis, sp. nov. 
Type. Detached tooth (PI. XI. flg. 5) ; British Museum. 
The provisional name of II. levis may bo given to the teeth from 
of Hanover, noticed by Munster, Beitr. Petrefakt. vii (1810), p. 47. The 
North German Wealden and Purbeck teeth figured by Hunker and Meyer 
(Nordd. Wealdenbild. 1840, p. 68, pi. xv. fig. 22) and Stnickmann (Wealdenbild. 
Umgegend Hannover, 1880, p. 58, pi. iii. flg. 9) do not pertain to this species. 
