168 



Fig. 52. Upper and side views of head of Ercmias guttulata, to explain the 

 nomenclature of the shields. 



Genus TACHYDROMUS, 



Daudin, Kept, iii, p. 251, 1802. 



Head-shields normal*. Nostril pierced between two nasals and 



* I. e. a frontonasal, a pair of prajfrontals, a frontal, a pair of frontoparietals, 

 a pair of parietals, an interparietal, and an occipital. 



