56 DR. MALCOLM SMITH ON THE 



52. Lyoosoma olivaceuji (Gra}')- 

 South-eastern, Western and I'eninsular Siaui. 



63. Lygosoma boweingii (^Glintli). 

 Common, and widely distributed. Rare in Bangkok. 



5 k Lyoosoma HEEBERTi Smith. 

 Nakon Sritamarat (Peninsular Siam). 



55. Lygosoma vittigerum Blgr. 



Widel}' distributed, but apparently nowhere common. 



56. Lygosoma rupicola Smith. 



Chong Kae, Paknampo (Central Siam) ; Ilin Lap (Eastern Siam). 



57. Lyoosoma melaxosticum Blgr, 



Chantabun (S. E. Siam) ; Nakon Sritamarat (Peninsular Siam) ; 

 and (?) Bangkok (cf. Flower, P.Z.S., 1899, p. 650). 



58. Lygosoma laterale (Say). 



Lyi/iifumn reeresii (Gray), Blgr., Cat Liz. Brit. ^Iiis., IH, p. 2G4. 



Donsr Ilek Mountains, wliere it is not uncommon. 



Li/ijosoma reevesii from China and Siam, presenting characters 

 indentical witli Lijqofioma laterale from North America, cannot he sepa- 

 rated from it, and the Asiatic form has therefore been placed bj' ]\[r. 

 Boulenger under laterale, whicli is the older name. It is unlikelj' that 

 this skink has been carried across the Pacific, but considei-ing the close 

 affinities which many members of tliis large family bear to each other, 

 it is possible that the two forms have been produced independently. 



59. Lycjosoma quadriv]ttatu:\i Peters. 

 Patani (Peninsular Siam). 



60. Ly'Gosoma chalc'ides (Linn.). 

 Widelj'^ distributed. Not uncommon in Bangkok. 



6L Lygosoma isodactylum (Cnthr.). 

 From Ayuthia to Paknampo (Central Siam), following the rail- 

 way line. 



62. Lygosoma anguinoides Blgr. 

 Bangsaphan (South-western Siam); Maprit (I'eninsular Siam). 



6.3. Tropidophorus yunnanensis Blgr. 

 Khao Pieung and Rluang Song forest. Pre, (Northern Siam.) 



Of. Tropidopiiori'S cociiinciiinensis CDum. &Bib. ). 

 Khao Sebab, Chantabun ( South-eastern Siam ). 



JOURX. NAT. HIST. SOC. SIAM, 



