Occasional Papers of the Museiun of Zoology 3 



white (about to be shed). Tliroat Hght huniere green, the 

 outer scales with a black base, the middle ones with small 

 black spots at the base. Belly and ventral surface of limbs 

 lumiere blue, the base of each scale black. Tail proximally 

 diva blue with three black bands — continuations of the dorsal 

 and lateral dark areas — diminishing in width and disappearing 

 about the middle, distally entirely induline blue. 



The measurements of the type specimen are as follows : 

 total length 143.5 mm., length of head 11.5 mm., width of head 

 8.5 mm., length of snout 4.75 mm., length of tail 88 mm. 



Habitat: Sand ridges on the Demerara River, British 

 Guiana. 



Type specimen : Cat. No. 47798, IMuseum of Zoology, 

 University of ]\Iicliigan; sand ridge near Dunoon, British 

 Guiana; August 24, 1914; Ahxander G. Ruthven, collector. 



ISJotes on paratype: A second specimen differs from the 

 type only in size and brightness of color. The length of the 

 head and body is 45 mm., the length of the head 9.5 mm., the 

 width of the head 7 mm., and the length of the snout 3.75 mm. 

 The tail has been reproduced. In life the specimen had the 

 same color pattern as tlie type, but the head was cinnamon 

 brown above, the dorsal region from the occiput to the middle 

 of the back Front's brown, the lumbar region black; the lateral 

 stripe was antimony yellow on the head, straw yellow on the 

 shoulder, and courge green on tlie body; the chin as well as the 

 throat was light lumiere green, and the tail was amparo blue. 



Habits : This lizard was only found in the woods on the 

 sand ridges. But six individuals were observed in the course 

 of the field work, and only two of these were captured. All 

 of those seen were on trees and stumps, and were very agils 

 and shv, quickly s:eking concealment at the slightest alarm. 

 The actions are verv skink-like, so much so that individuals 



