202 THE VERTEBRATE SKELETON. 



There is no separate precoracoid but a precoracoidal pro- 

 cess (fig. 34, 7) of the coracoid is generally prominent. 



FIG. 34. LATERAL VIEW or THE SHOULDER-GIRDLE OF Varanus. x f . 

 (Brit. Mus.). 



1. suprascapula. 5. clavicle. 



2. scapula. 6. interclavicle. 



3. glenoid cavity. 7. precoracoidal process. 



4. coracoid. 



Sternal ribs are present in chamaeleons and scinks. The 

 limbs are in the great majority of cases pentedactylate and 

 the digits are clawed. The phalanges articulate by means 

 of condyles. Sometimes one or both pairs of limbs are 

 absent. When the posterior limbs are absent the pelvis is 

 also wanting, though the loss of the anterior limbs does not 

 lead to a corresponding loss of the pectoral girdle. 



The pubis corresponds to the prepubis of Dinosaurs, and 

 both pubes and ischia meet in ventral symphyses. 



The suborder includes the Lizards, Chamaeleons and Arn- 

 phisbaenians. 



Suborder (2). OPHIDIA 1 . 

 The Ophidia or snakes are characterised by their greatly 



1 See C. K. Hoffmann, in Bronn's Klassen und Ordnungen des Thier- 

 reichs, Bd. vi., 3 abth. 188590. 



