LIZARDS OF THE GENUS TIIOPIDOPHORUS. 781 



8. TnoriDoruoRUS thai. 



Tropidophorus thai Mlcm, Smith, Journ. N. II. S. Siam, 1919, 

 iii. p. 226. 



Habitat. N. Siam. Still known only from the original spe- 

 cimens. 



9. TnopiDOPnoRus mickolepis. 



Tropidophorns inicrolepis Giinther, P. Z. S. 18G1, p. 188; id. 

 Kept. Brit. Ind. 18()4, p. 70, pi. x. fig. A. 



Tropidoplwrns cochinchinensis (in part) Bouleng. Cat. Liz. ]?rit. 

 Mus. 1887, iii. p. 363 ; Mlcm. Smith, Journ. N. H. S. Siam. 1919, 

 iii. p. 227. 



As already stated, the prteanal shields appear to be constant in 

 number as regards each species, and in 19 examples of T. micro- 

 lepis from the type-locality I find 3 prseanal shields in every 

 instance. Another specimen from Dran, on the Langbian 

 plateau, S. Annam, has also 3 prasanal shields, and agrees in all 

 other respects with the topotypes. 



With so important a character to guide one it is justifiable to 

 maintain Giinther's species, and to keep it distinct from cocinci- 

 nensis, the three type-specimens of which have only two prseanal 

 shields each. 



In 1\ microlepis the dorsal and lateral scales are all strongly 

 keeled and spinously produced, all of the lateral rows, except the 

 lowest, being obliquely directed. The first lower labial is very 

 small, .illowing the second labial to make broad contact with the 

 post-mental. 



