LIZARDS. 221 



Smith's Taraguira. Taraguira Smithii. 



Olive-green, with black cross-bands on each side, the 1 in front 

 of the shoulders rather the broadest, (not white-edged) ; scales of 

 the neck and back larger keeled, the keels fonning distinct ridges, 

 of the tail larger ; of the front of the ear-hole broad, short, une- 

 ^qual ; tail compressed, higher than broad, with a distinct central 

 ridge of rather more keeled scales. 



a — c. In spirits. Tail thick (males?), under side of thighs and 



preanal space blackish. Brazil. 

 d — ■/. In spirits. Tail more slender, under side of thighs and the 



space before the vent blackish. Pernambuco. Presented by 



J. P. G. Smith, Esq. 

 g. In spirits. Tail wanting, under side of thighs and space in 



front of vent yellow. Brazils. Presented by C. Darwin, Esq. 



39. MicEOLOPHUs, Dum. et Bib. Tropidurus, part, Weigm. 



Head subpyramidical, quadrangular, depressed, covered ^vith 

 unequal flat subsymmetrical plates a dilated interparietal and band- 

 like supraorbital shields. Nostrils lateral, rather tubular, just 

 above the face- ridge. Palate toothed. Ear toothed in front. 

 Neck with many cross folds, and an arched fold on each shoulder 

 meeting on the chest. Body elongate, rather rounded, with 2 

 obscure folds on each side. Scales subimbricate, of the back mo- 

 derate, feebly keeled or smooth, of the belly smooth. Nape, back 

 and tail with a very low toothed or tubercular crest. Tail long, 

 subcorneal, rather larger, covered with rhombic keeled pointed ra- 

 ther whorled scales. Femoral pores none. Toes 5-5, unequal, 

 denticulated, clawed. 



The MiCROLOPHE. Microlophus Peruvianus. Stellio Pei-u- 

 vianus. Lesson^ Voy. Coq. JRept. t. 2,/. 1, (var. C. Dum.) Lophy- 

 rus Araucanus, Lesson, Voy. Coq. Rept. t. 2,/. 1, (var. B. Dum.) 

 Tropidurus microlophus, Weigm. Bonn Trans, xvii. 223, t. 16, 

 (var. A. Dum.) T. heterolepis, Weigm. I. c. 225, i. 17, /. 1, (var. 

 D. Dum.) Mi. Lessonii, Dum. et Bib. E. G. iv. 336. 



Olive, black speckled and varied, or with a black or white side 

 streak ; dorsal crest toothed, or tubercular and rudimentary. 



a, h. Young, in spirits. Peru, Copiapo and Iquique. Presented 

 by Charles Darwin, Esq. 



40. Oplurus, Cuvier. Uromastyx, Pr. Max. 



Head triangular, rather elongate, covered with moderate-sized 

 plates ; a moderate interparietal plate, and many small supraocu- 

 lar, placed in several series. Nostrils rather lateral, tubular. Pa- 

 late toothed. Ears sunk, toothed in front. Neck with a cross fold 

 on the chest, going over the shoulder, and sometimes preceded bv 



u3 



