204 SAURIA. 



to T. teguixin, we have recorded it under that name, quoting such syno- 

 nyms as are ascribed to it in the systematic works, leaving aside 

 such of the ancient writers who, unaware of the above differences, 

 have spoken indiscriminately of the two species. 



The best and most accurate description of this species is that given 

 in the " Erpetologie g^nerale," to which we refer our readers. 



The ground color of the upper regions is black, with yellow spots 

 disposed or arranged in various manners. On the specimen before us> 

 they are grouped, so as to simulate transverse fasciae or bands ; some- 

 times, they are disposed upon two longitudinal zones, one on each side. 

 The upper surface of the head and limbs is spotted with yellow. On 

 the tail, the spots are arranged upon transverse rings. The inferior 

 surface of the head and belly is yellow, maculated with black, which 

 is sometimes in transverse bars or bands along the abdomen ; the 

 limbs and tail beneath being maculated with black. 



LOG. From the neighborhood of Rio de Janeiro, Brazil. 



Plate XVIII, fig. 1, represents Teius teguixin, two-thirds the size of 

 life. 



Fig. 2, exhibits the upper surface of the head. 



Fig. 3, is the inferior surface of the same. 



Fig. 4, a side view of a finger. 



Fig. 5, a side view of a toe. 



Fig. 6, a group of dorsal scales. 



Fig. 7, a group of abdominal scutellae. 



FAM. ZONTJRIDAE. 



A trait which will at once enable any observer to recognize a mem- 

 ber of this family, consists in the presence, along the sides of the body, 

 of a longitudinal zone, covered with granular scales, to which zone cor- 

 responds a fold of the skin. The back is protected with large, squarish, 

 or rhombic scales, and the abdomen with rather well-developed scu- 

 tellae. The body itself is elongated, somewhat depressed, generally 

 provided with four limbs, and occasionally with the posterior pair 

 alone, else none at all, or hidden under the skin. The head is pyra- 

 midal or depressed, covered with regular polygonal plates. The tongue 



