AG AMO ID GROUP. 
■of the family, is much depressed; and there is no crest along the hack. There are 
no folds or pouches on the neck, but pores are present both in front of the vent 
and on the thighs, and the aperture of the ear is exposed. The Arabian thorny- 
tail, or dabb, as it is termed by the Arabs (Uromastix spinipes), is one of the 
best known members of the genus, and inhabits Egypt, Crete, and Arabia. It 
belongs to a group characterised by the rings of spiny scales on the upper surface 
of the tail being in juxtaposition; while, in common with two other species, it 
by the circumstance that the front teeth, instead of being small and conical, are 
large, and in the adult united together into one or two broad cutting-teeth, 
separated from those of the cheek-series by a gap; while externally they are easily 
recognised by their short tails covered with well-defined rings of spiny scales. The 
head is remarkably short and rounded; the bod 3 r , as in most terrestrial members 
ARABIAN THORNY-TAILED LIZARD Hat. size). 
