LIZARDS. 209 



Weigmann's Tropidolepis. Tropidolepis formosus, Dum. et 

 Bib. E. G. iv. 303. Sceloporus formosus, Weigm. Herp. Mex. 

 50, S. torquatus, jun. Weigm. H. M. t. 7,/. 2, 8. 



Yellow, green coppery ; males with a plain black scapular 

 sometimes interrupted band; scales of the back rhomboidal, 

 toothed and ending in a large very pointed spine. 



Inhab. Mexico. Mus. Berlin. 



The Spinose Tropidolepis. Tropidolepis spinosus, Gray., 

 Griffith, A. K. ix. 43. Dum. et Bib. E. G. iv. 304. Sceloporus 

 spinosus, Weigmann, Isis, 1828, 369. Herp. Mex. 50, t. 7,/. 3. 



Olive grey, with series of brown spots ; scales of the back rhom- 

 boidal, slightly toothed, keeled, and ending in a strong point ; 

 frontal shields 8 or 9. 



Inhab. Mexico. Mus. Berlin. 



The Horrid Teopidolepis. Tropidolepis horridus, Dum. et 

 Bib. E. G. iv. 306. Sceloporus horridus, Weigm. H. Mex. 50. 



Olive, with a grey -edged yellow streak on each side; yellowish 

 beneath ; scales very large, rhomboidal, ending in a solid point ; 

 frontal disk of 7 plates. 



Inhab. Mexico. Mus. Berlin. 



The Spotted Tropidolepis. Tropidolepis grammicus, Gray., 

 Syn. A. K. ix. 43. Dum. et Bib. E. G. iv. 307. Sceloporus 

 grammicus, Weigm. Isis, 1828, 369. Herp. Mex. 51. S. pleuro- 

 stictus, Weigm. his, 1828, 369. 



Olive green, with angular black-brown bands across the back ; 

 scales of the back large, rhomboidal, pointed, toothed on the edge. 



Inhab. Mexico. Mus. Berlin. 



*** Head-shields smooth. Scales of the back small, not toothed. 



The Small-scaled Tropidolepis. Tropidolepis microlepi- 

 dotus, Dum. et Bib. E. G. iv. 308. Sceloporus microlepidotus, 

 Weigm. Herp. Mex. 51. S. grammicus, var. Weigm. Isis, 1828. 



Ashy green, with dusky bands and spots ; scales of the body 

 small, with short points, entire on the edge ; interparietal plate 

 large, cordate (formed of interparietal and 2 occipitals united ?) ; 

 superciliary shields 10, in 2 rows, f. 



a. In spirits. Mexico. From the Berlin Museum. 



**** Head-shields rugose. Scales of the back toothed. 



The Variable Sceloporus. Tropidolepis variabilis. Scelo- 

 porus variabilis, Weigm. Herp. Mex. 51. Dum. et Bib. E. G. iv. 

 308. 



Olive brown ; male with 2 whitish lateral bands, female with 

 transverse brown spots, placed in 2 series upon the middle of the 

 back ; supraorbital shields 5, broad, in one row, edged with small 



T 3 



