200 
SELACHII. 
F. M‘Coy, Ann. Mag. Nat. Hist. [2] vol. ii. (1848), p. 129 ; 
and Brit. Palacoz. Foss. 1855, p. 638, pi. 3o. fig. 10. — Upper 
Carboniferous Limestone ; Derbyshire. 
Deltodus angustm, Newberry & Worthen, op. cit. vol. iv. p. 368, 
pi. iii. fig. 7 : Deltodopsis angustus, St. .John & Worthen, 
Pal. Illinois, vol. vii. pp. 160, 163, pi. xi. figs. 7-10. — 
Chester Limestone ; Illinois. 
DeUodug cinctulus, St. John & Worthen, Pal. Illinois, vol. vii. 
(1883), p. 146, pi. ix. figs. 6, 7. — Warsaw Limestone ; 
Missouri and Illinois. 
Deltodus cinctuSj J. S. Newberry, Ann. Bop. Geol. Surv. Indiana, 
1876-78 (1879), p. 344. — St. Louis Limestone; Indiana. 
Deltodus cingulatm, Newberty & Worthen, op. cit. vol. ii. p. 99, 
pi. ix. fig. 6. — Chester Limestone ; Illinois. 
Deltodus circinans : Piecilodtts circinans, H. Trautschold, Mem. Soc. 
Imp. Nat. Moseon, vol. xiv. (1879), p. 52, pi. vii. fig. 1.- — 
Carboniferous Limestone ; Government of Moscow. 
(?) Deltodus eontm'tus : Taeniodtis contortus, St. John & Worthen («.v 
L. G. de Koninck, MS.), oj). cit. vol. vii. (1883), p. 76. — 
Lower Carboniferous Limestone ; Vise, Belgium. 
(!) Deltodus fasciatus, Newberry & Worthen, oj>. eit.\<A. iv. (1870), 
p. 366, pi. iii. fig. 17 : Temiodm fa[s~\ciatus'l , St. .lohn & 
Worthen, op. dt. vol. vii. (1883), p. 76, pi. xiii. fig. 9.— 
Keokuk Limestone ; Illinois. 
Deltodus grmidis-. Pcedlodus gmndis, H. Trautschold, loe. cit. 
vol. xiv. (1879), p. 51, pi. vi. fig. 13.— Carboniferous 
Limestone ; Government of Moscow. 
Deltodus incrassatus, II. Trautschold, loc. cit. vol. xiv. p. 54, 
pi. vii. fig. 5.— Carboniferous Limestone ; Government of 
Moscow. 
Deltodus mtermedius, St. John & Worthen, op. cit. vol. vii. p. 153, 
pl. ix. figs. 14, 15. — St. Louis Limestone; Iowa, Illinois. 
{1) Deltodm lamimiris, H. Trautschold, loc. cit. vol. xiv. (1879), 
P . vii. fig. 6 : Cocliliodm lurninaris, H. Trautschold, loc. 
cit. vol. xiii. ( 1874 )^ 291. — Carboniferous Limestone; 
Government of Moscow. 
Deltodus latior, St. John & Worthen, op. cit. vol. vii. p. 145, pl.ix. 
r\ u I ^®okuk Limestone ; Illinois and Iowa. 
Deltodus httom, Newberry & Worthen, cit. vol. iv. p. 367, 
p . IV. fig. 8; and St. John & Worthen, op. cit. vol. vii. 
p. 149.— Lower Carboniferous; Missouri. 
Deltodu.^,u>rurei,J.B. Newberry, in Hep. Expl. Exped. from Santa 
he. New Mexico, to Colorado, 1876, p. 137, pl. iii. fig. 1 J 
