48 
SELACHII. 
Surgery, vol. ii. (1874) p. 537, figs, xxvii, xxviii.— Coal- 
Measure.s; Northumberland. 
Petalodus parvulus : AntUodus Newberry & Worthen, 
op. cit. vol. ii. p. 38, pi. ii. fig. 7.— Burlington and Keokuk 
Limestones ; lUinoia. 
Petalodus proximus, St. John & Worthen, tom. eit. p. 395, pi. xii. 
fig. 11. — Upper Coal-Measures ; Illinois. 
AntUodus cucullus, Newberry & Wortben, op. cit. vol. ii. (1866), 
p. 41, pi. iii. fig. 1. — Keokuk Limestone ; Illinois. 
AntUodus gracilis, St. John & Worthen, op. cit. vol. vi. (1875), 
p. 393, pi. xi. fig. 29. — Warsaw Beds ; Illinois. 
AntUodus minutus, Newberry & Worthen, op. cit. vol. ii. p. 43, 
pi. iii. fig. 3 ; J. S. Newberry, Ann. Rep. Geol. Surv. 
Indiana, 1879, p. 341. — Keokuk Limestone, Illinois; St. 
Louis Limestone, Indiana. ? Also A. minutus, L. G. de 
Koninck, Faune Calc. Carbf. Bclg. pt. i. (1878), p. 52, 
pi. vi. fig. 9. — Lower Carboniferous Limestone (Bed le) ; 
Toumai, Belgium. 
AntUodus mucronatus, Newberry <fc Worthen, op. cit. vol. ii. p. 38, 
pi. ii. fig. 6. — St. Louis Limestone ; Illinois. 
AntUodus perovalis, St. .Tohn & Worthen, op. cit. vol. vi. p. 393, 
pi. xi. fig. 28. — Warsaw Beds ; Illinois. 
AntUodus politus, Newberry & Worthen, op. cit. vol. ii. p. 42, 
pi. iii. fig. 2. — Keokuk Limestone ; Illinois. 
AntUodus rohustus, Newberry & Worthen, op. cit. vol. ii. p. 39, 
pi. ii. fig. 9. — Chester Limestone ; Illinois. 
AntUodus similis, Newberry & Worthen, op. cit. vol. ii. p. 41, 
pi. ii. fig. 10. ?Also J. S. Newberry, Ann. Rep. Geol. 
Surv. Indiana, 1879, p. 346. — Keokuk Limestone ; Illinois, 
(?) Indiana. 
AntUodus simplex, Newberry & Worthen, op. cit. vol. ii. p. 44, 
pi. iii. fig. 4. — Burlington Limestone ; Iowa. 
AntUodus sulcaitts, Newberry & Worthen, op. cit. vol. ii. p. 45, 
pi. iii. fig. 5. — Keokuk Limestone ; Illinois. 
Chomatodus nffinis, Newberry & Worthen, op. cit. vol. ii. p. 54, 
pi. iii. fig. 15. — Keokuk Limestone; Illinois. 
Chomatodus angxdaris, Newberry & Worthen, op. cit. vol. ii. p. 55, 
pi. iii. fig. 16. — Coal-Measures ; Illinois. 
Chomatodus cultdhis, Newberry & Worthen, op. cit. vol. ii. p. 52, 
pi. iii. fig. 13.— Chester Limestone ; Illinois. 
Chomatodus gracillimus, Newberry & Worthen, oj>. cit. vol. ii. p. 51, 
pi. iii. fig. 12. — Burlington Limestone ; Iowa. 
Chomatodus insignis (Leidy), St. John & Worthen, op. cit. vol. vi. 
pi. X. A. fig. 5 : (?) Paloeobatis insignis, J. Leidy, Trans. Amor. 
