II. Ventral scales smooth; supraocular scales trans- 

 versely enlarged; nostril two times nearer the 

 orbit than the end of the snout 5. V. nebulosus p. 145. 



B. Nostril round or oval; tail compressed. 



I. A transversely enlarged median series of supra- 

 ocular scales. 



a. Nostril oval, at least twice as far from the 

 orbit as from the end of the snout. 



1. Scales rather small; ventral scales in 85 95 

 transverse rows; supraocular region with 



4 8 transversely enlarged shields 6. V, salvator p. 146. 



2. Scales rather large; ventral scales in 74 

 transverse rows ; supraocular region with 



4 6 broad, transversely enlarged shields . 7. V. togianus p. 147. 



b. Nostril round. 



1 . Nostril two times nearer the end of the snout 

 than the orbit; nuchal scales very small, 



separated by wide interspaces 8. F. kalabeck p. 148. 



2. Nostril a little nearer the end of the snout 



than the orbit 9. V. indictts p. 148. 



II. Supraocular scales subequal. 



1. Nostril a little nearer the end of the snout 



than the orbit 10. V. gouldi p. 149. 



2. Nostril three times as far from the orbit as 



from the end of the snout II. V. komodoensis p. 150. 



C. Nostril round; tail round or slightly compressed 

 posteriorly, without a crest. 



I. A transversely enlarged median series of supra- 

 ocular scales. 



a. Nuchal scales not keeled 12. V. prasinus p. 151. 



b. Nuchal scales strongly keeled 13. V. kordensis p. 152. 



II. Supraocular scales subequal; nostril equally 



distant from the orbit and the end of the snout . 14. V, timer ensis p. 152. 



i. Varanus heteropholis Boulenger. 



Varanus heteropholis^ Boulenger, Proc. Zool. Soc. London 1892, p. 506. 



Snout depressed, obtusely pointed, as long as the distance 

 between the anterior corner of the eye and the ear; canthus 

 rostralis indistinct; nostril oblique, three times nearer the orbit 

 than the tip of the snout; teeth sharp, compressed. Head- 

 scales large, subequal, polygonal, ten between the nostrils, 

 four across the supraocular region and three between the 



