REPTILIA. 295 



Eidechse; this species becomes 6" long ; it feeds on insects and enjoys basking 

 in the sunshine ; the female lays from five to eight eggs, which are said to 

 emit light for a time in the dark (GBUENDLER Naturforscher m. s. 128). 

 Another still smaller European species is viviparous, or the young come to 

 view immediately as the eggs are laid: Lacerta viiipara JACQ., Zootoca 

 crocea WAGL., WIEGM., Lacerta crocea WOLF in STURM'S Fauna, Amphib. 

 Heft 4, BELL 1. 1. p. 34, Zootoca Guerini COCTEAU in GU&SIN Magas. de 

 Zool. 1835, Kept. PI. 9. 



Tropidosaura BOIE (Algyra Guv.). Collar none. Abdomen 

 covered with imbricate scales. Scales of back acuminate, acutely 

 carinate. 



Sp. Lacerta algira L., Algyra barbarica Cuv., GU^RIN Iconogr., Rept. PI. v. 

 fig. i ; from the North African coast, near Algiers ; Tropidosaura montana 

 BOIE, found by KUHL and V. HASSELT in Java. 



TacJiydromus DAUD., MERE. Head acute. Scales carinate, 

 quadrate, large in back and tail. Tail verticillate, very long. Two 

 pores at the vent on each side. 



Sp. TacTiydromus sexlineatus DAUD. Repl. m. PI. 39, TacJiydromus ocettatus 

 GUR. Iconogr., Rept. PL 5, fig. 3, in the East Indies, Java, Cochin China; 

 I have not been able to find any teeth in the palate of this little animal. 



Heloderma WIEGM. Snout obtuse, covered with four flat 

 scuta. Head covered above with tuberculate scales. Teeth sharp, 

 conical, grooved anteriorly; back covered with larger knotty 

 scales ; scutella of abdomen flat, smooth. Nostrils at the apex 

 of snout. Third and fourth toe both of the fore and hind feet 

 longer than the rest, subequal. Tail round, conical, almost equal 

 to the trunk in length. 



Sp. Heloderma horridum WIEGMANN, Herpet. Mexican. Tab. I. pp. 24, 25 ; 

 TKOSCHEL Ueber Heloderma horridum, Archiv f. Naturgesch. 1853, s. 294 

 315. Taf. 13, 14; Mexico. 



Tribe II. Ameivce. Maxillary teeth solid at the base, firmly 

 fixed in a groove at the inner margin of jaws and growing to 

 it, often directed obliquely outwards, the anterior mostly subulate, 

 the poster or compressed or tuberculate. Palate edentulous in 

 most. Often two transverse folds under the neck. Tongue 

 beset with rhombic, imbricate scales, divided at the apex into two 

 filaments. 



This division contains species from the western hemisphere 

 alone, where they represent the true lizards. Many of these 



