/ i 
LIST OF PRINCIPAL WORKS CITED. 
Hulke, J. W. — 1871. Note on a large reptilian skull from Brooke, Isle 
of Wight, probably dinosaurian, and referable to the genus Iguanodon. 
Quart. Jour. Geol. Soc. London, vol. XXVII, pp. 199-206, pi. XI, 
figs. 1-5. 
Cope, E. D. — 1883. On the characters of the skull in the Hadrosauridse. 
Proc. Acad. Nat. Sc. Philadel., vol. XXXV, pp. 97-107, pis. IV-VII. 
Andrews, Chas. W. — 1897. Note on a cast of the brain-cavity of Iguan- 
odon. Ann. and Mag. Nat. Hist., vol. XIX, sixth series, pp. 585-591, 
text fig. and pi. XVI, figs. 1-3. 
Hay, O.P. — 1909. On the skull and the brain of Triceratops, with notes 
on the brain-cases of Iguanodon and Megalosaurus. Proc. U.S. Nat. 
Mus., vol. XXXVI, pp. 95-108, pis. 1-3. 
Gilmore, Charles W. — 1909. Osteology of the Jurassic reptile Campto- 
saurus, with a revision of the species of the genus, and descriptions 
of two new species. Proc. U.S. Nat. Mus., vol. XXXVI, pp. 197-332, 
text figs. 1-48, pis. 6-20. 
Osborn, Henry Fairfield. — 1912. Crania of Tyrannosaurus and Allosaurus. 
Mem. Am. Mus. Nat. Hist., new series, vol. I, pt. I, pp. 1-30, pis. 
I-IV, text figs. 1-27. 
Brown, B. — 1914. Anchiceratops, a new genus of Horned dinosaurs from 
the Edmonton Cretaceous of Alberta. With discussion of the origin 
of the Ceratopsian crest and the brain-casts of Anchiceratops and 
Trachodon. Bull. Am. Mus. Nat. Hist., vol. XXXIII, pp. 539-548, 
text fig. 1, and pis. XXIX-XXXVII. 
Lambe, Lawrence M. — 1917. A new genus and species of orestless hadro-* 
saur from the Edmonton formation of Alberta. Ottawa Naturalist, 
vol. XXXI, pp. 65-73, pis. II and III. 
Lambe, Lawrence M. — 1918. On the genus Trachodon of Leidy. Ottawa 
Naturalist, vol. XXXI, pp. 135-139. 
8329—6 
