12 SWED. ZOOL. EXP. TO SIAM, EINAR LÖNNBERG. 2. LIZARDS. 



Total length 292 mm. 



Length of tail 65 » 



Transverse diameter at the anterior end of the body 10 



Vertical diameter » » » 8,5 



Transverse » » posterior 8,5 » 



Vertical » » » » > 7,5 » 



Diameter of tail about 8 » 



One specimen was found on a sandy path leading down from the mountain- 

 ridge to the coast at Koh Lak Paa, Siamese Malacca (about 12° N) the 9th of Dec. 

 1914. Is was called »Ngu tin» by the natives and regarded as »awfully poisonous» 

 like the »Ngu din» which means Typhlops. 



As it was of interest to ascertain, whether there were any rudiments left of 

 the shoulder- or pelvic girdles, I asked Dr. Gösta Forssell, and he kindly pre- 

 pared the accompanying Röntgen-photo of this rare lizard. From the skiagram it is 



Fig. G. Skiagram of Isopachys gyldenstolpei proving the absence of a shoolder girdle, 

 but the presence of a tiny pelvic rudiment. 



apparent that no shoulder girdle can be traced, but that there is a tiny rudiment of 

 the pelvic girdle to be scen at the vertebra behind the one oarrying the last ribs. 

 The thick black blotch is produced by fjeces in the rcctal portion of the intcstine. 

 It may be presumed that these are the remains of earthwonns which have been 

 devourcd by the lizard. 



