432 



REPORT OF NATIONAL MUSEUM, 1898. 



iu size, until the whole crown appears black or dark brown, crossed by- 

 irregular lines formed by the yellow posterior edges of the scales. 



Phrynosoma coronatum was first described from a specimen collected 

 by Botta iu "California." It has since been recorded from Cape St. 

 Lucas and La Paz. The specimens enumerated below show that it 

 ranges far north of the limits of the "Cape Region." 



Phrynosoma coronatum Blamville, 



PHRYNOSOMA CORNUTUM Harlan. 



Phrynosoma cornutmn Gkay, Syii. Kept. Griff., Cuvier's Anim. Kingd., IX, 1831, 

 p. 45; Cat. Liz. Brit. Mus., 1845, p. 229.— Holbrook, N. Amer. Herpt., II, 1842, 

 p. 87, pi. XI.— GiRARD, Stansb. Expl. Gt. Salt Lake, 1852, p. 360, pi. a'III, figs. 

 1-6.— E. Blanchard, Orgau. Reg. Anim., 1852, Pt. 5, pi. xii.— Halloweix, 

 Sitgreaves Expd. ZuFii, 1853, p. 119. — Girard, Herpt. U. S. Expl. Expd., 1858, 

 p. 403, pi. XXI, figs. 6-9; U. S. Mex. Bound. Surv., 1859, p. 9.— Bocourt, Miss. 

 Sc. Mex., Rept., 1874, p. 236, 1870, pi. xii, fig. 9.— Boulenger, Cat. Liz. Brit. 

 Mus., II, 1885, p. 245. 



Agama cornuta Harlan, Journ. Acad. Nat. Sci. PLila., IV, 1825, p. 299, pi. xx; 

 VI, 1829, 14; Med. and Phys. Res., 1835, p. 141, plate, figs. 1, 2.— Griffith, 

 Cuvier's Auim. Kingd., IX, 1831, p. 216. 



Tapaya cornuta Cuvier, Reg. Anim., 2d ed., II, 1829, p. 37. 



Trojndogaster cornutus Fitzinger, Syst. Rept., I, 1813, p. 79. 



Tropidogastcr hufonium Fitzinger, Syst. Rept., 1, 1843, p. 79. 



'? Lacerte lapayaxln Barton, Med. and Pliys. Jour., Ill, II (1807?), p. 68. 



Phrynosoma hufonium Wiegmann, Isis, 1828, p. 367. — Gray, Syn. Rept. GrifF., 

 Cuvier's Anim. Kingd., IX, 1831, p. 45. 



Phrynosoma harlanii Wikgmann, Herpt. Mex,, I, 1834, p. 54.— Dumeril and BiB- 

 RON, IV, 1837, p. 314.— Spring and Lacordaire; Anat., Pt. 2, 1842, p. 192 

 (Bull. Acad. Roy. Bruxelles). — Aug. Dumeril, Cat. Metli. Coll. Rept. Mus. 

 Paris, 1851, p. 28. 



Phrynosoma orbiculare Holbrook, N. Amer. Herpt., II, 1842, p. 93, pi. xii. 



Phrynosoma planlceps Hallowell, Proc, Acad. Nat. Sci. Phila., VI, 1852, p. 178; 

 Sitgreaves Exp., 1853, p. 124, pi. vii. 



Head short, muzzle descending steeply in profile, but not separated 

 from tlie front by a conspicuous angle. ISTostrils directed forward and 

 separated from the scales of the canthus rostralis by a single scale. 

 Posterior supercilinry angle produced into a short horn. Temporal 

 region expanded, supporting three horns, the anterior short, the 



