CESTRACI0NTID2E. 
239 
(P) 1875. Agassizodus virginicmus, St. John & Worthen, Pal. Illinois, 
vol. vi. p. 321, pi. yiii. fig. 23. 
1883. Canpodus agassizianus, M. Lohest, Ann. Soc. Geol. Belg. vol. xi. 
p. 305, pi. iii. figs. 1-3, pi. iv. figs. 1, 4-6. 
Type. Associated teeth ; British Museum and Paris School of 
Mines. 
Teeth with a few prominent large buttresses upon each long 
border, and all the crests ornamented with short transverse wrinkles. 
An elaborate description of the dentition is given by Lohest (/oc. 
cit.), who assigns Agassizodus virginicmus to this species. 
Form. Sf Loc. Lower Carboniferous (Ampelite): Belgium. (?) Upper 
Coal-Measures: West Virginia, U.S.A. 
28754 . Portion of type specimen described and figured bj’ L. G. dc 
Koninck, op.cit.; from the “Ampelite alunifere,” Chockier, 
near Liege. Purchased, 1853. 
The following species have also been founded upon teeth, but 
there are no examples in the Collection : — 
Ccimpodus corrugatus : Orodus corrugatus , Newberry & Worthen, 
Pal. Illinois, vol. iv. (1870), p. 358, pi. iii. fig. 18 : Agas¬ 
sizodus corrugatus , St. John & Worthen, Pal. Illinois, vol. vi. 
(1875), p. 323, pi. viii. fig. 24.—Lower Coal-Measures ; 
Illinois. Upper Coal-Measures : Kansas. 
Ccimpodus rectcingulus : Arpagodus rectangulus , H. Trautschold, 
Nouv. Mem. Soc. Imp. Nat. Moscou, vol. xiv. (1879), p. 59, 
pi. vi. fig. 12.—Carboniferous Limestone ; Government of 
Moscow, Kussia. 
Ccimpodus scituius : Agassizodus scitulus , St. John & Worthen, 
op. cit. vol. vi. p. 322, pi. vi. figs. 16-18.—Lower Coal- 
Measures ; Illinois. Middle Coal-Measures ; Iowa. 
Ccimpodus varicibilis : Lophodus variabilis, Newberry & Worthen, 
op. cit. vol. iv. p. 361, pi. iv. figs. 4, 5, 11 : Agassizodus 
variabilis , St. John & Worthen, op. cit. vol. vi. p. 318, 
pi. viii. figs. 1-22.—Upper Coal-Measures ; Illinois, Iowa, 
and Kansas. C. 'y $3° ^/ 
Some Carboniferous Selachian teeth closely related to those of 
Orodus and Agassizodus have been described under the generic 
names of Mesodmodus (St. John & Worthen, Pal. Illinois, vol. vi. 
1875, p. 290) and Hybodopsis (W. J. Barkas, Monthly Kev. Dental 
Surgery, vol. vii. 1878, p. 191). To the former are referred 
Mesodmodus explanatus , St. John & Worthen, tom. cit. p. 293, pi. v. 
