[297-B] Travels in North America, vol. ii. p. 168.

[298-A] Hitchcock, Mem. of Amer. Acad. New Ser., vol. iii. p. 129.

[298-B] This specimen is now in Dr. Mantell's museum.

[299-A] Amer. Journ. of Sci. vol. xlviii. p. 46.

[300-A] Journal of Voyage of Beagle, &c. 2d edition, p. 89. 1845.

[301-A] Palæontographical Society, 1848, London.

[302-A] Trans. Geol. Soc. Lond., Second Series, vol. iii. p. 37.

[303-A] King's Monograph, pl. 2.

[306-A] See paper by Messrs. Riley and Stutchbury, Geol. Trans., Second Series, vol. v. p. 349., plate 29., figures 2. and 5.

[306-B] Owen, Report on Reptiles, British Assoc., Eleventh Meeting, 1841, p. 197.