TAPAYA HERN ANDES I. 395 



Beries of black spots or blotches, posteriorly light-margined. Beneath 

 yellowishj maculated with jet-black. 



^Y^.— Tapaya orbicularis, Cuv. Rhgn. Anim. 11, 1817, 35; 2d ed. II, 1829, 37; &, 

 ed. illustr. Kept. 53. 



Phri/nosoma orhiculare, WiEGM. in Oken, Isis, XXI, 1828, 367 ; &, Herp. Mex. 

 I, 1834, 53. Tab. viii, fig. 1.— Wagl. Descr. & Icon. Amph. 1828. Tab. xxiii, figs. 

 1 & 2 ; &, Naturl. Sysfc. Amph. 1830, 146.— Schinz, Naturg. u. Abbild. Kept. 1833, 

 88. Tab. XXVII. fig. 2.— Dum. & Bibr. Erpet. gen. IV, 1837, 321.— Gray, Synops. 

 Eept. in Griff. Anim. Kingd. IX, 1831, 45 ; &, Catal. Lizz. Brit. Mus. 1845, 228.— 

 Grd. in Stansh. Expl. Vail. Gr. Salt Lake, Utah, 1852, 359. 



Agama orbicularis, Daud. Hist. nat. Kept. Ill, 1805, 406. — Voigt, Uebcrs. Thierr. 

 Cuv. II, 1831, 54. 



Pkri/nosoma orbicularis, Gravenh. in Nov. Act, Acad. nat. cur. XVI, ii, 1834, 911. 

 Tab. LXiii. 



Phrynosoma wiegmanni, Gray, in Beechey, Voy. to the Pacif. Zool. 1839, 96. 



Tapayaxin, Lacerlus orbicularis, Hernand. Nov. Plant. Anim. Min. Mex. Hist. 

 1648, 67. 



I'he Tapayaxin of Mexico, Griff. Anim. Kingd. IX, 1831, 124. 



Observ. — Characterized by its small head and cephalic spines, 

 which are larger than in any other species of the same genus. 



Loc. —Valley of Mexico. 



2. Tapaya hernandesi, Grd. 



Spec. Char. — Head rather large, depressed ; vertex broad, slightly 

 inclined anteriorly ; snout protruding. Cephalic plates small. 

 Occipital and temporal spines small and conical. Submaxillar 

 shields moderate. Auricular apertures simple, granular. Mental 

 scales very small : the series adjoining the submaxillar shields 

 larger than the rest. Several folds under the throat, minutely 

 granular. Abdominal scales small and subrhomboid, acuminated. 

 Femoral pores small, not continuous across the interfemoral region. 

 Blackish-brown above, with a double or quadruple series of black, 

 light-margined spots. Beneath yellowish, unicolor, else obscurely 

 maculated. 



Observ. — Allied to the preceding species, from which it chiefly 



