154 '^^i^ American Geologist. September, i899 
1886. 
Dinocerata: a Monograph of an Extinct Order of Gigantic Mam- 
mals. With 56 plates and 200 woodcuts. 4°, xviii-f237 pp. Mono- 
graphs U. S. Geol. Surv., vol. 10, Washington. (Author's edition, 
title page dated 1884: published 1885.) 
1887. 
American Jurassic Mammals. Amer. Jour. Sci. (.3), vol. 2>3< PP- 
327-348, pis. vii-x. 
Notice of New Fossil Mammals. Ibid., vol. 34, pp. 323-331. 
. Principal Characters of American Jurassic Dinosaurs. Pt. IX. 
The Skull and Dermal Armor of Stegosaurus. Ibid., pp. 413-417, pis. 
vi-ix. 
1888. 
Notice of a New Genus of Sauropoda and other new Dinosaurs 
from the Potomac Formation. Ibid., vol. 35. pp. 89-94. 
Notice of a new Fossil Sirenian, from California. Ibid., pp. 94-96. 
A New Family of Horned Dinosauria from the Cretaceous. Ibid., 
vol. 36, pp. 447-478, pl. xi. 
1889. 
Restoration of Brontops robustus from the Miocene of America, 
Abstract: Ibid., vol. 27, PP- 163-165, pl. vi. 
A Comparison of the Principal Forms of Dinosauria of Europe and 
America. Abstract: Ibid., pp. 323-331- 
Notice of new American Dinosauria. Ibid., pp. 331-336. 
Discovery of Cretaceous Mammalia. Ibid., vol. 38, pp. 81-92, pis. 
ii-v. 
Notice of Gigantic Horned Dinosauria from the Cretaceous. Ibid., 
pp. 173-175- 
Discovery of Cretaceous Mammalia. Pt. II. Ibid., pp. 177-180, 
pis. vii-viii. 
The Skull of the Gigantic Ceratopsidae. Abstract: Ibid., pp. 501- 
506, pl. xii. 
1890. 
Description of New Dinosaurian Reptiles. Ibid., vol. 39, pp. 81-86, 
pl. i. 
Distinctive Characters of the order Hallopoda. Ibid., pp. 415-417. 
Additional Characters of the Ceratopsidae, with notice of new Cre- 
taceous Dinosaurs. Ibid., pp. 418-426, pis. v-vii. 
Notice of New Tertiary Mammals. Ibid., pp. 523-525. 
Notice of some extinct Testudinata. Ibid., vol. 40, pp. i77-i79. p's. 
vii-viii. 
1891. 
A Horned Artiodactyle (Protoceras celer) from the Miocene. Ibid., 
vol. 41, pp. 81-82. 
On the Gigantic Ceratopsidae, or Horned Dinosaurs, of North 
America. Ibid., pp. 167-178, pis. i-x. 
