. The Ceratopsia. Ceratopsia. Fig. 89.—A, External view of right pterygoid, type of Monoclonius fissus Cope, No. 3988, American Museum of Natural History; B, internal view of same, qs, Surface for quadrate; a, surface for pterygoid process; ec, eustachian canal (?). One-fourth natural size. Fig. 89 shows the extremely fragmentary and unsatisfactory nature of the type of this species. It also indicates the diminutive size of the animal to which it pertained when compared with the more gigantic forms from the Laramie of Converse County, Wyo. Owing to the frag- mentary nature of the type, I am qu
. The Ceratopsia. Ceratopsia. Fig. 89.—A, External view of right pterygoid, type of Monoclonius fissus Cope, No. 3988, American Museum of Natural History; B, internal view of same, qs, Surface for quadrate; a, surface for pterygoid process; ec, eustachian canal (?). One-fourth natural size. Fig. 89 shows the extremely fragmentary and unsatisfactory nature of the type of this species. It also indicates the diminutive size of the animal to which it pertained when compared with the more gigantic forms from the Laramie of Converse County, Wyo. Owing to the frag- mentary nature of the type, I am quite unable to add anything additional to the specific char- acters given by Cope, and the species must remain practically as a nomen nudum, which it would not be amiss to relegate to the paleontological wastebasket. Monoclonius recurvicornis Cope. 1889. Type (No. 3999, American Museum of Natural History) consists of portions of skull, including frontal and nasal horn cores. Original description on page 716, vol. 23, of American Naturalist. Hatcher, J. B., Am. Naturalist, vol. 33, 1896, p. 113. Lambe, L. M., Contr. Canadian Pal., vol. 3 (quarto;, pt. 2, 1902, p. 68. Nopcsa, F. Baron, Foldtani Kozlony, Budapest, 1901, vol. 31, p. 270. Osborn, H. F., Contr. Canadian Pal., vol. 3 (quarto), pt. 2, 1902, pp. 14, 20. The type of the present species consists of the occipital region of the skull, both supra- orbital horn cores, a portion of the frontals, the nasal horn core coossified with a fragment of the nasals, a fragment of the jugal, and a fragment of the parietal showing about 10 inches of the periphery with two epoccipital bones in place. The specimen was discovered by Prof. E. D. Cope in 1876, in a bluff on the north side of the Missouri River, nearly opposite the mouth of Dog Creek, in Montana. According to Cope, the geological horizon was near the base of the Judith River beds as these are represented at this locality. The material upon which the present species was based w
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