794 E. T. NEWTON ON SATTROCEPHALTTS. 



List of Genera and Species which have been referred to 

 Saurocephalus, Sfc. 



Saurocephalus lancieokmis, Harlan. (America.) 



Saurocephalus lanciformis, Harlan, 1830, Journ. Ac. Nat. Sci. 

 Philad. vol. iii. p. 331, pi. xii. f. 1-5. 



Saurodon lanciformis, Hays, 1830, Trans. Am. Phil. Soc. vol. iii. 

 p. 476, pi. xvi. fig. 11. 



Saurocephalus lanciformis, Harlan, 1834, Trans. Geol. Soc. 

 Penn. vol. i. p. 87; Harlan, 1835, Med. & Phys. Res. p. 362, 

 figs. 1-5 ; Owen, 1843, ' Odontography/ p. 130, pi. lv. ; Leidy, 1856, 

 Trans. Am. Phil. Soc. 1860, vol. ii. p. 91, pi. vi. figs. 8-11 ; Cope, 

 1875, Geol. Surv. Terr. vol. ii. Cret. Yert. pp. 216, 275. 



Saurocephalus Leanus, Hays. (America.) 



Saurodon Leanus, Hays, 1830, Trans. Am. Phil. Soc. vol. iii. 

 p. 471, pi. xvi. f. 1-10. 



Saurocephalus Leanus, Harlan, 1834, Trans. Geol. Soc. Penn. 

 vol. i. p. 87; Edin. New Phil. Jonrn. vol. xviii. p. 28; Leidy, 1856, 

 Trans. Am. Phil. Soc. 1860, vol. xi. p. 91, pi. vi. f. 12-15. 



Saurodon Leanus, Cope, 1875, Geol. Surv. Terr. vol. ii. Cret. 

 Yert. p. 275. 



Saurocephalus arapahovius, Cope. (America.) 



Saurocephalus arapahovius, Cope, 1872, Proceed. Am. Phil. Soc. 

 vol. xii. p. 343 ; Cope, 1875, Geol. Surv. Terr. vol. ii. Cret. Yert. 

 pp. 216, 275, pi. xlix. f. 5. 



Protosphtr^na eerox, Leidy. (England.) 



Unknown fish, Mantell, 1822, ' Geology of Sussex/ p. 227, pi. 

 xxxiii. f. 7-9. 



Saurocephalus lanciformis, Agassiz, 1843, Poiss. Foss. vol. v. 

 p. 102, pi. xxv c . f. 21-29 ; Dixon, 1850, Eoss. Suss. p. 374, pi. xxx. 

 f. 21, xxxi. f. 12, xxxii*. f. 1, xxxiv. f. 11. 



Protosphyrama ferooc, Leidy, 1856, Trans. Am. Phil. Soc. 1860, 

 vol. xi. p. 91. 



Xiphias Dixoni, Leidy, 1856, ibid. p. 91 . 



Erisichthe Dixoni, Cope, 1877, Bull. Geol. Surv. Terr. vol. iii. 

 p. 821. 



Protosphtr^na angulata, Cope. (America.) 



Portheus angulatus, Cope, 1872, Proc. Am. Phil. Soc. vol. xii. 

 p. 337. 



Erisichthe angulatus, Cope, 1875, Geol. Surv. Terr. vol. ii. Cret. 

 Yert. pp. 217, 275 ; 1877, Bull. Geol. Surv. Terr. vol. iii. p. 821. 



Protosphyr2ena nitida, Cope. (America.) 



Erisichthe nitida, Cope, 1872, Proc. Acad. Philad. p. 280 ; 1875, 



