EUMECES BOWRINGII. 91 



EUMECES SIAMENSIS. 



Supranasal shields meeting before the prsefrontal ; the lower eyelid is transparent. Hind 

 toes very unequal in length, the third being one-fifth shorter than the fourth. 



Prsefrontal, postfrontals, and vertical meet in a point. Four superciliary shields ; a pair of 

 anterior occipitals ; opening of the ear without denticulation. Thirty longitudinal series of 

 scales round the trunk, thirty-two transverse series between the axils of the fore and hind 

 legs. Anal shields subequal in size ; subcaudals broadish. 



Limbs well developed : the fore legs extend to the eye, the hind legs not quite to the axil. 



Uniform greenish olive above, whitish below ; a well-defined deep-black band runs from 

 the snout along the upper part of the sides ; it is not margined with white. 



This species is closely allied to the West Indian Mahouia agilis ; we have seen only one 

 specimen, sent by Mouhot from Siam for the British Museum. It is 6 inches long, head 

 and trunk measuring 2 inches. 



EUMECES BOWRINGII. 



The supranasal shields touch each other, separating the rostral from the prsefrontal, which 

 forms a broad suture with the vertical. The lower eyelid is scaly. Toes rather short, the 

 third hind toe being but very little shorter than the fourth. A pair of anterior occipitals. 

 Twenty-eight longitudinal series of scales round the trunk, thirty transverse series between 

 the axils of the fore and hind legs. The middle anal shields are scarcely larger than the 

 lateral ; no broad subcaudals. 



Opening of the ear not denticulated. Limbs rather feeble ; the fore legs do not extend on 

 to the eye, and the hind legs scarcely extend halfway up the sides towards the axil. 



Brownish olive above, with an indistinct dark line along each series of scales; a brown 

 band along each side of the back ; sides with interrupted series of dark-brown dots. 



A single specimen, from Hongkong, was presented to the British Museum by Sir J, 

 Bowring; it is ^\ inches long, head and trunk measuring 1\ inch. 



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