190 
SEIACHII. 
P. 2451. Imperfect “ lower ” dental plate ; Quincy, Illinois. 
Enniskillen Coll. 
The following species have also been founded upon detached 
teeth, but there are no examples in the Collection: 
Sandalodus conveocus: Orthopleurodus conveocus , St. John & 
Worthen, Pal. Illinois, vol. vii. (1883), p. 193, pi. xiii. 
figs. 4, 5.—Coal-Measures (above Mahoning Sandstone) ; 
West Yirginia. 
Sandalodus novo-meocicanus : Orthopleurodus novo-meocicanus , St. 
John & Worthen, op. cit. vol. vii. p. 195, pi. xiii. figs. 1- 
3.—Lower Carboniferous ; Santa Fe, Yew Mexico. 
Sandalodus parvulus, Newberry & Worthen, op. cit. vol. ii. (1866), 
p. 102, pi. x. fig. 1 : Stenopterodus parvulus (in part), St. 
John & Worthen, op. cit. vol. vii. p. 107, pi. iv. figs. 4-8.— 
St. Louis Limestone; Illinois, Missouri, and Iowa. [Type 
species.] 
Sandalodus robustus, L. G. de Koninek, Faune Calc. Carbf. Belg. 
pt, i. (1878), p. 62, pi. v. fig. 7.—Lower Carboniferous 
Limestone; Belgium, //, *^7^ tf/**^<**^J 
Sandalodus spatulatus, Newberry & Worthen, op. cit. vol. ii. p. 103, 
pi. x. fig. 2; and St. John & Worthen, op. cit. vol. vii. 
p. 188, pi. xii. fig. 7: Deltodus rhomboideus, Newberry & 
Worthen, op. cit. vol. ii. p. 100, pi. ix. fig 8: Sandalodus 
crassus, Newberry & Worthen, op.cit. vol. iv. (1870), p. 369, 
pi. iv. fig. 3.—St. Louis Limestone; Illinois and Missouri. 
[Synonymy given by St. John & Worthen, loc. cit.'] 
Sandalodus tenerrimus: Streblodus tenerrimus , L. G. de Koninek, 
Faune Calc. Carbf. Belg. pt. i. (1878), p. 55, pi. vi. fig. 13 : 
Vaticinodus tenerrimus , St. John & Worthen, op. cit. 
vol. vii. p. 81.—Lower Carboniferous Limestone; Tournai, 
Belgium. 
Sandalodus vetustus : Vaticinodus vetustus, St. John & Worthen, 
op. cit. vol. vii. p. 82, pi. iii. fig. 1.—Kinderhook Lime¬ 
stone ; Iowa. 
According to Trautschold (Nouv. Mem. Soc. Imp. Nat. Moscou, 
vol. xiv. 1879, p. 57), teeth of Sandalodus also occur in the Car¬ 
boniferous Limestone of Mjatschkowa, Moscow. 
A number of imperfect, mostly indeterminable, Cochliodont teeth 
from the Carboniferous of the United States, have been described 
under the names of Vaticinodus discrepans, St. John & Worthen 
(op. cit. vol. vii. p. 83, pi. iii. figs. 2, 3), V. (?) carbonarius, St. J. & W. 
