238 
SELACHIX. 
Orodus sculptus, J. W. Davis, tom. cit. p. 396, pi. li. fig. 8.— 
Lower Carboniferous Limestone ; Bristol. 
Orodus sublcevis, H. Trautschold, loo. cit. vol. xiii. (1874), p. 268, 
pi. xxvi. fig. 7.—Carboniferous Limestone; Government 
of Toula, Bussia. 
Orodus tumidus, H. Trautschold, loo. cit. vol. xiii. p. 267, pi. xxvi. 
fig. 5.— Carboniferous Limestone ; Government of Toula. 
Orodus turgidus, St. John & Worthen, op. cit. vol. vi. p. 310, 
pi. vi. figs. 4, 5.—Chester Limestone ; Illinois. 
Orodus varicibilis , J. S. Newberry, Hep. Geol. Surv. Ohio, vol. ii. 
pt. ii. (1875), p. 50, pi. lviii. fig. 11.—Waverly Group; 
Ohio and Kentucky. 
Orodus variocostatus, St. John & Worthen, op. cit. vol. vi. p. 304, 
pi. vii. figs. 1-9 : (?) Helodus gibbosus, Newberry & Worthen, 
op. cit. vol. ii. p. 79, pi. v. fig. 3.—Upper Burlington 
Limestone; Iowa and Illinois. 
Orodus whitei , St. John & Worthen, op. cit. vol. vi. p. 297, pi. vi. 
fig. 25.—Upper Kinderhook Limestone ; Iowa. 
fikQ’ 
Genus CAMPODUSj L. G. de Koninck. 
[Descr. Anim. Loss. Terr. Carbf. Belg. 1844, p. 617.] 
Syn. Lophodus, Newberry & Worthen ( non Romanowsky), Pal. Illinois, 
vol. iv. 1870, p. 360. 
Agassizodus, St. John & Worthen, Pal. Illinois, vol. vi. 1875, p. 311. 
Arpagodus, H. Trautschold, Nouv. Mem. Soc. Imp. Nat. Moscou, 
vol. xiv. 1879, p. 59. 
Dentition very similar to that of Orodus , but distinguished by the 
buttressed condition of the coronal borders, and 44 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 varicibilis is described by St. John & Worthen \ and the 
restoration amended by M. Lohest 1 2 . 
Campodus agassizianus, L. G. de Koninck. 
1844. Campodus agassizianus, L. G. de Koninck, Descr. Anim. Foss. 
Terr. Carbf. Belg. p. 617, pi. lv. fig. 1. 
1 Pal. Illinois, vol. vi. p. 311, pi. viii. figs. 1-22. 
2 Ann. Soc. Geol. Belg. vol. xi. (1883), p. 305. 
