196 BULLETIN 17 7, UNITED STATES NATIONAL MUSEUM 



1830. Metopoceros cornutus Wagler, Natiirliches System der Amphibien . . . , 

 p. 147. — Wiegmann, Herpetologia Mexicana . . . , vol. 1, p. 16, 1834. — ■ 

 Dumeril and Bibron, Erp6tologie generate, vol. 4, p. 211, 1837. — Gray 

 Catalogue of the specimens of lizards in the collection of the British Museum, 

 p. 188, 1845.— Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 18, p. 124, 1866 

 (part); Amer. Nat., vol. 19, p. 1006, 1885.— Gunther, Trans. Zool. Soc. Lon- 

 don, vol. 11, p. 218, pis. 43, 44, 1882. — Boulenger, Catalogue of the specimens 

 of lizards in the collection of the British Museum, ed. 2, vol. 2, p. 188, 

 1885 (part). — Fischer, Jahrb. Hamburg Wiss. Anst., vol. 5, p. 24, 1888. — 

 Muller, Verh. Naturf. Ges. Basel, vol. 10, pt. 1, p. 211, 1892. — Boettger, 

 Katalog der Batrachier-Sammlung im Museum der Senckenbergischen natur- 

 forschenden Gesellschaft in Frankfurt am Main, pt. 1, p. 63, 1893. — 

 Meerwarth, Mitth. Naturh. Mus. Hamburg, vol. 18, p. 26, 1901 (part). 



1843. Hypsilophus (Metopoceros) cornutus Fitzinger, Systema reptilium, p. 54. 



1886. Cyclura cornuta Cope, Proc. Amer. Philos. Soc, vol. 23, p. 263. — Garman, 

 Bull. Essex Inst., vol. 19, p. 50, extr. p. 26, 1887 (part, Jeremie). — Stejne- 

 ger, Rep. U. S. Nat. Mus. for 1902 p. 670, 1904.— Barbour, Bull. Mus. 

 Comp. Zool., vol. 44, No. 2, p. 299, 1914 (part); Zoologica, vol. 11, No. 4, 

 p. 96, 1930; vol. 19, No. 3, p. 118, 1935.— Barbour and Noble, Bull. Mus. 

 Comp. Zool., vol. 60, No. 4, p. 160, pi. 10, 1916.— Cochran, Proc. U. S. Nat. 

 Mus., vol. 66, art. 6, p. 8, 1924; Proc. Biol. Soc. Washington, vol. 41, p. 54, 

 1928. 



1937. Cyclura cornuta cornuta Barbour, Bull. Mus. Comp. Zool., vol. 82, No. 2, 

 p. 132. — Mertens, Senckenbergiana, vol. 20, No. 5, p. 337, 1938; Publ. Inst. 

 Cient. Dominico-Aleman, vol. 1, p. 88, 1939. — Boker, Publ. Inst. Cicnt. 

 Domfnico-Aleman, vol. 1, p. 18, 1939. 



Description. — U.S.N.M. No. 82107, a half-grown individual col- 

 lected on Petite Gonave Island by Lee H. Parish and Watson Perrygo 

 in May 1930. Rostral twice as wide as high, as wide as mental, nar- 

 rowly separated from the nasals by a single row of small scales; nasal 

 large, irregularly rhomboidal, slightly wider than high, perforated by 

 an ovoid nostril equal in width to three-fourths the height of the 

 rostral; no postnasals; nasals separated from each other by two or 

 three rows of scales; two pairs of conical hornlike prefrontal scales, the 

 anterior in contact with the nasal; a median conical frontal enlarged 

 into a horn, and separated from the posterior prefrontal by two rows 

 of small scales ; the remainder of the top of the head covered by smaller 

 scales, which are all heavily keeled; a well-marked supraorbital semi- 

 circle composed of larger polygonal scales separated from its fellow by 

 about five rows of smaller scales; directly bordering this semicircle a 

 patch of enlarged supraocular scales, which grade into very small 

 scales just before reaching the superciliary border; occipital region 

 swollen and elevated above the surrounding region; length of occipital 

 scale nearly equaling height of rostral, separated from the posterior 

 portion of the supraorbital semicircles by three rows of small scales; 

 a series of suboculars continued backward to the anterior border of 

 the ear, bluntly tubercular and most prominent under the posterior 

 half of the eye; the remaining scales between eye and ear exceedingly 

 small, except for a large conical tubercle and two smaller ones just 



