238 
BELACHn. 
Orodus sculptus, J. W. Davis, tom. cit. p. 396, pi. li. fig. 8. — 
Lower Cai-boiiiforous Limestone ; Bristol. 
Orodus sublcevis, H. Trautscliold, loc. cit. vol. xiii. (1874), p. 268, 
pi. xxvi. fig. 7. — Carboniferous Limestone; Government 
of Toula, Russia. 
Orodus tumulus, II. Trautsehold, loc. cit. vol. xiii. p. 267, pi. xxvi. 
fig. 6. — Carboniferous Limestono ; Government of Toula. 
Orodus turtjidus, St. John & Worthon, op. (At. vol. vi. p. 310, 
pi. vi. figs. 4, 6. — Chester Limestone ; Illinois. 
Orodus varudAlis, J. S. NewboiTj-, Rep. Geol. Surv. Ohio, vol. ii. 
pt. ii. (1875), p. 50, pi. Iviii. fig. 11. — Wavcrly Group; 
Ohio and Kentucky. 
Orodus variocostatus, St. John & Wortlicn, op. <At. vol. vi. p. 304, 
pi. vii. figs. 1-9 : (?) Ildodus gibhosus, Newberry &Worthen, 
op. cit. vol. ii. p. 79, pi. V. fig. 3.— Upper Burlington 
Limestono; Iowa and Illinois. 
Orodus whitei, St. John & Worthen, op. cit. vol. vi. p. 297, pi. vi. 
fig. 25. — Upper Kinderhook Limestone ; Iowa. 
Genus CAMPODUS, L. G. do Koninok. 
[Descr. Auim. Ross. Terr. Carbf. Belg. 1844, p. 61 7. J 
Svu. Lophodus, Newberry & Worthen Own Romanowskyj, Pal. Illinois, 
vol. iv. 1870, p. 300. 
Ayassizodus, St. John & Worthen, Pal. Illinois, vol. vi. 1875, p. 311. 
Arpayudus, II. Trautsehold, Nouv. Mdm. Soc. Imp. Nat. Moscou, 
vol. xiv. 1879, p. 50. 
Dentition very similar to that of Orodus, but distinguished by the 
buttressed condition of the coronal borders, and “ the relatively 
fewer rows of acuminate teeth, as inferred from this feature being 
so prevalent in all collections of Orodi, while the linear forms are 
least commonly met with ” (St. John & Worthen). 
A large portion of the dentition of one jaw of the so-called 
Agassizodus vanahilis is described by St. John & Worthen \ and the 
restoration amended by M. Lohest 
Campodus agassizianus, L. G. de Koninck. 
1844. Campodus ayassizianus, L. G. de Koninck, Descr. Anim. Foss. 
Terr. Carbf. Belg. p. 617, pi. Iv. fig. 1. 
* Pal. Illinois, vol. vi. p. 311, pi. viii. figs. 1-22. 
^ Ann. Soc. Q^ol. Belg. vol. xi. (1883), p. 305. 
