190 
8ELACHII. 
P. 2451. Imperfect “ lower ” denial plate ; Quincy, Illinois. 
EimuhiUen Coll. 
The following species have also been founded upon detached 
teeth, but there are no examples in the Collection : — 
Sandalodus convexus : Orthopleurodus convexus, St. John & 
Worthen, Pal. Illinois, vol. vii. (1883), p. 193, pi. xiii. 
figs. 4, 5. — Coal-Measures (above Slahoning Sandstone) ; 
West Virginia. 
Sandalodus novo-mexicanus : Orthopleurodus novo-mexicanus, St. 
John & Worthen, op. eit. vol. vii. p. 19.5, pi. xiii. figs. 1- 
3. — Lower Carboniferous ; Santa Fe, New Mexico. 
Samlalodus parvulus, Newberry & Worthen, op. eit. vol. ii. (1866), 
p. 102, pi. X. fig. 1 : Stenopterod.us parvulus (in part), St. 
John & Worthen, op. c/t. vol. vii. p. 107, pi. iv. figs. 4-8. — 
St. Louis Limestone ; Illinois, Missouri, and Iowa. [Typo 
8pecie.s.] 
Sandalodus robustus, L. 0. de Koniuck, Fauno Calc. Carbf. Belg. 
pt. i. (1878), p. 02, pi. V. fig. 7. — Lower Carboniferous 
Limestone; Belgium. 
Sandalodus spatulatus, Newberry & Worthen, q/n cit. vol. ii. p. 1 03, 
pi. X. fig. 2 ; and St. John & Worthen, op. cit. vol. vii. 
p. 188, pi. xii. fig. 7 : Beltodus rhonihoideus, 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, he. cit.'] 
Sandalodus tenemmus : Streblodus lenerrimus, L. G. de Koninck, 
Faune Calc. Carbf. Belg. pt. i. (1878), p. 55, pi. vi. fig. 13 : 
Vatichiodus tenerrimus, St. John & Worthen, ojy. eit. 
vol. vii. p. 81. — Lower Carboniferous Limestone; Tournai, 
Belgium. 
Sandalodus vetustus: Vatieinodus vetustus, St. John & Worthen, 
op. cit. vol. vii. p. 82, pi. iii. fig. 1. — Kinderhook Lime- 
stone ; Iowa. 
According to Trautsehold (Nouv. 5Iem. 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 'Eatidnodus discr spans, St. John & Worthen 
(op. cit. vol. vii. p. 83, pi. iii. figs. 2, 3), V. (?) carbonarius, St. J. & 
